43 Bengtson 1983 - Fossils and Strata (Low Res.)

8/18/2019 43 Bengtson 1983 - Fossils and Strata (Low Res.)

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The Cenomanian-Coniacian of the

Sergipe Basin Brazil

Peter Bengtson

FOSSILS ND STR T

Number

12

•

Os lo 25th

ebruary

1983

Universitetsforlaget • Oslo


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F TTEdt

Anders Martinsson, Department of Palaeobiology,Box 564, S-75122 Uppsala, Sweden.

Edtoal ad admstatve boad

Stefan Bengtson (Uppsala), Fredrk Bockele (Bergen), Anders Martnsson (Uppsala), Valdemar Poulsen (Copenhagen) and Roland Skoglund (Uppsala)

Pblshe

Universitetsforlaget, Postboks 2959, Tøyen, Oslo 6,Norway

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The Cenomanian-oniacian of theSrgip Basi, BrazlPETER BENGTSON

Bengtson, P. 983 0225: The CenomanianConiacian of the Sergipe Basin, Brazil Fossils andStrata, No 2, pp 78, on foldout map Oslo. ISSN 0300949 ISBN 8200094847

IU SNES O

ProjectMDCRETACEOUS EVENTS

A geological outlin and a biostratigraphical framework ar prsnted for th Cnomanian Coniacian of Sergipe, as the basis for taxonomic work and development of a detailed biostratigraphy. A rich macrofauna of ammonites, bivalves, gastropods and echinoids wascollected from 604 localities, which are named and described. The sequence is subdivided intoight units, using ammonite assmblages easily recognizabl in th ld, and plottd on a:00 000 localiy map Where ammonites are laking, mirofacies analysis inoceramids or

other bivalves complement the framework. The CenomanianConiaian sdimentation in theSergipe Basin, albeit inuenced by eustatic sealeve! changs, was largly tectonically control-ed and irregular, as is evidnt from numrous facies variations and discontinuitis. heEstncia area in southern Sergipe was more stable and apparently became transressed only

by the global, late Cenomanian eustatic rise. The boundary between the Cenomanian Coniacian Cotinguiba Formation and the underlying Riachuelo Formation occurs at varying stratigraphical leve1s and appears verywhere to be unconformabl. An annotated bibliogra phy is provided O Ammo noidea, Inoceramidae, Bivalvia, Gastropoda, Echinoidea, Arthropoda, Foramini fera; bi ostratigraphy, lithost ratigrap, areal geolo, microfaci es, geol ogical map, locali descr iptions,bibliography, otinguiba Formation, Aracaju Member, Sapucari Member, Laraneiras facies, Pindoba

facies, Riachuelo Formation , Maru im Memb er, Agu ilhada Member, new name , lime ston e, dolomit ediscontinuities, enomanian, Turonian, oniacian, Upper retaceous, Sergipe Basin, State of Sergipe,Nordeste, northeastern Bra�il, South Atlantic Ocean, S1122 S1035 654 W727.

Peter Bengtson, Paleontologiska museet, Box 558, S-751 22 Uppsala, Swede 2nd June 1982

Contents

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . . .

Gooca sntess . . . . . . . . . . . . . . . . . . . . . . . . . .Historical review . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Te period of te foreign travelers ( 1 820-1 87 5he initiation and consolidation of national

researc ( 1 8 75- 1 940 .The basic prospecting for ol ( 1 940-1 956Mode detailed and diversied researc (post

1956)Fossils reported i n the literature . . . . . . . . . . . . . .

Fieldwork and methods . . . . . . . . . . . . . . . . . . . . . . .opographical and geol og ica l aps . . . . . . . . . . .Exposures and accessibilit . . . . . . . . . . . . . . . . . .Methods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Locality descriptions . . . . . . . . . . . . . . . . . . . . . . .Litostratigrap . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

he Riachuelo Formation . . . . . . . . . . . . . . . . . . . .he Cotinguiba Formation . . . . . . . . . . . . . . . . . . .

33488

91 2

1 21 5

2525

2627

30

3 13 13 1

Pindoba and Laranjeiras facies . . . . . . . . . . . .The RiachueloCotinguiba boundar . . . . . . .scontnutes n t uonan an onacan

Bostratigrap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Palaeontological notes . . . . . . . . . . . . . . . . . . . . .S tage b ou nd ari es and s ub di vi si on s . . . . . . . . . . . .Cenomanian . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Cenomanian 1 .Cenomanian 2Cenomanian 3Cenomanian 4

Turonian . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Turonian l ............................. .uronian 2uronian 3

Coniacian . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Coniacian l ............................. .

Prac tica l application of t subdiv is ion . . . . . . . .The Estncia area

3338

4 1

42

42

43

44

44

444444

44444445

45454747


4/83

Diuion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Subdiviion of te euene . . . . . . . . . . . . . . . . . Te biotratigrapia map . . . . . . . . . . . . . . . . . . onuion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Summar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .ReumoRu

47

49

505 5 52

53

Bibiograp and referene . . . . . . . . . . . . . . . . . . . Appendix oait data . . . . . . . . . . . . . . . . . . . . .

Deription of oaitie . . . . . . . . . . . . . . . . . . . . . nd ex of oa it ie in te i te rat ur e . . . . . . . . . . .

Appendix 2: Biotratigrapia oait indexAppendix 3 Biotratigrapia map . . . faing page

54

5563

63

72

74

78


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6/83

4 eer Benson : Cenoman an- Conacan o Sere

nivesie, Sweden , Jos Wiedmann (Univesi Tbingen, ed- ea Repbic o Gemany , . Wiiam Wigh (Seabough, o- se, Engand, and Keih Yong (Unvesiy o Texas a Auin, USA PieeYves Behou (Univesi Piee e Maie uie, Pa

is, ance conibued subsanially o he biosaigaphical maphogh micoacies anayses o he ocaliies Ele G Kauman(Univesiy o oloado, Bolde, USA conibued daa on he

inoceamids and Jean Philippe Leanc (Univesi des Sciences e

Techniqes d Languedoc, Monpelie, ance povided inomaion on he enomanian and Tuonin bivave and gasopod au nas oes o saigaphical impoance abo he echinoids wee given by Alain Bida (Msum d' Hisoie auel e, ice, anc

Among he many Swedish coleages who have given hei ime o discss maes o elevane o his wok, specia menion goes oSean Bengson and Andes Mainsson (Enheen paleobioogi, Uppsaa nivesie

A Paeonologiska insiionen (Uppsaa , cleaning and devel oping o he ossi maeia was done mainy by Szana Bengson,and om 98 aso by Jose Aanki agma Engsm daed heges and Gsav Andesson and Tommy Wesbeg povided phoogaphic pins oninous hep om he es o he sa oPaeonoogiska insiionen is acknowedged, noably om he aeEva Ekind, Bigi Jansson, Kain Landgen, he ae Bay Lidn,

Jgen Schbe and Eic SåhlMaia Heena Ribeio Hessel (Baslia dew he ammones in

ig 40 and Bigi Bengson (Rockneby, Sweden povided exao dinay seceaial assisance on many occasions

as o he manscip wee ead by igenes de Ameida ampos, Godon R hancelo, Lesey hens (Sveiges geologiskandeskning, Uppsaa , Wiiam James Kennedy, ancisco esoPone, and Richad Reymen G R. hancelo and Lesey hens impoved he Engish The ench and Russian summaieswee povided by iana Beho (Pais, ance and Igo yov (Geoogicheskij insi A SSSR, Moscow

The edwok in 97972 was panned and pepaed o d- ing a Roay Inenaiona Gadae eowship (970 a he Insi-o de Geocincias, Univesidade edeal do Rio Gande do Sul,

Poo Aege, Bazi. The ed invesigaions wee nanced hough

gans om he Swedish aa Science Reseach oncil (R; G22005 , G220 09, and R475004 , avel gans om h u (970, C F Lwah (972 and 97 , and Håa (97 , ogehewih nds o gadae eseach 97 om he Univesiy o U ppsaa The cos o shipping o Uppsaa he maeia coleced in972 was deayed by he v o he Univesiy o Uppsaa,and in 977 by R (G475007 The empoymen o a paimeechnician o deveoping he ossi maeia was made possible in97 and 974 hogh gans om Th N a andHa-Rzu of he Roya Swedish Academy o Sci ences, La o he Univesiy of Uppsala, and NFR(G220 05 and G22005 Since July 975, he empoymen ohe echnician and my own eseach posiion have been nded eney by R (G220 04, 09 , 074, and 00; G4750 , 02 ,and 0 . Since 97, maeial and ave expenses in connecionwih he pojec have been coveed hough he above menioned gans and aso specicay by Båh h (97 o he Univesiy o Uppsala, Ma Bva (975,and R (G475 00.

A majo pa o he maeial pesened hee was incuded in myPh hesis, deended in Jne 977 a he Univesiy o Uppsala

Geological synthesis Srgip Bai i t otr af of t SrgipAagoa Bai i ortatr Braz te Nordese Regio, Fig

oor part of ti bai, wic i tire witit two ma tat of Srgip (ot of t So FracicoRivr ad Aagoa ort of t rivr, occpie a coatabt om 380 m og ad 20 to 50 m wid It i o ofvra at Mozoic tioa rift bai sensu Wio

OSSILS A SRAA

Wiiam 99 o f ocaed Atatic tp itatd aog twtr margi of te Sot Aatic Oca (Fig Tbai wre iiia formed a rift va b t rptr oft formr AfricaSot Amrica cotit Pot Am (98 ad Am (98 give t mot rct,compriv accot of te googica votio of tBraziia marga bai A dtaid rviw wit mpaio rfac geoog ad paaotoog wa giv b Brito(99 O te mot importat featre revat to teomaia oiacia dveopmet ofS ergip wi be otid r, icdig om w obrvatio

e rtaco margia ba i of Brazi fa t rctraad tratigrapica ito two grop: t tra Atatic bai, from t Amap to Potigar bai, ad (2 tSot Atatic bai, from te SrgipeAagoa to Peotabai (Fig ) formr grop corrpod arg to tar zoe wer t Africa ad Sot Amrica patid aog "qatoria traform fat drg t earretaceo ee bai dipa bot teioa ad

comprioa tctoic trctre ad cotai great tic of dimt, oca mor ta 0 000 m Pot Am 98 tratigrapica qce i biparti t, coitig of a ower omari part of ear rtaco agad a ppr mari part of potAptia age SotAtatic margia bai ar caractrzd b xcivteioa fatig ad b omwat eer edimt ticee (maximm tic of 8 000 m, accordig to Pot Am 9 8 T tratigrapica qc i tripartite, teowr omare ad t pper mare bed big paratd b Aptia vaporite

Betwee tee two regio i t PrambcoParaba

Bai Fig wic ac mot of t omarie qecad te Aptia vaporit tr mari qc oore i dated a tartig i t Satoia, wit Abia depoit prt i t depr part of t ba Am arvao 9 8 Fig 3 Ti ggt tat te PrambcoParaba Bai wa i t area were coexiobtw Sot Amria ad Afrca prtd ogt aidfrom te Rio Grade RiWavi Ridg coexio e, forexampe, Remet 980 ad were te Atatic remaieda a arrow trat og to te ate retaceo

Meiter Aric (92 mmarized te geoogica evotio of te Sergipe Bai , wic te part of te SergipeAagoa Bai were te eomaaoiaca mot

f deveoped Fig 2 ompreive accot of teetire SergipeAagoa Ba were pbied b Am Pote ( 93 ad Ojeda Fgita (9 Stctra teSrgipAagoa Bai, icdig t adjact cotietamargi, form a afgrab, te cotrpart of wc iprab i Gabo g , Wio Wiiam 99 Fg e mai dpoitioa bai i boded to te otwet bte I taporaga Fat Fig 2 So t of ti fat tr i t"tcia patform, wic dipa a ti covr of marieretaceo edimt o Proterozoic? baemt Te rgioa dip avrag 0 5 to t otat, o ta progriv oger roc crop ot toward t c oat T e oor of

te bai i it bocfatd (Ojda Fgita 9Fig I Srgip, orma dpt to bamt rage btw ad 3 m o or, wi oor bai dpt ocarac ovr m Pot e al 980 880

tratigrapica qce Fig 3 i o of t mot


7/83

FOSSILS ND STRT 1 ( 198 Golocal ntss

M PA

A

M

ZO

N S

Fg l. Map of eastern Brazil, with shaded areas indicaing marginal basins

(named. bbreviations of state names:

A

/,

r

I,

---/

MT

R

.

GO

_ J

I

I

MG

. '" SNTOS

BARREIRINHS

PIAU-CER

POTIGUR

PERNMBUCO,:PARAfBA

JQUITIHONHCUMURUXATIB

MUCURI

SPRITO SANTO

= lagoas, P = map, B = Bahia

CE = Cea, DF = istrito Federal, ES =

Esp/rito Santo, G = Gois, M =

Maranhåo, MG = Minas Gerais, MS =

Mato Grosso do Sul, T = Mato Grosso,

P = Par, PB = Para/ba, PE = Pernam- buco, PI = Piau, PR = Paran, R =

Rio de Janeiro, RN Rio Grande doNorte, RS = Rio Grande do Sul, SC =

ata atana = Aa rom numerous sources)

.\

\S NT

CATARINA' ::

complete among te South Atlantic bain In latetJuraicand earl retaceou time, nonmarine ediment (theBaixo Såo Francico Group) were depoited in a ubidingrivalle bain Ater te general truc tural developm ent ofte bain, te rt marine incurion took place in te Aptianand i repreented b tick evaporitic equence, which,togeter wit dominantl nonmarine and lagoonal clatic

depoit, make up the Muribeca Formation A te earloceanic rift widened, inux ofterrigenou material decreaedin relation to carbonate production. The Aptian(?eno-manian Riacuelo Formation i compoed of clatic ediment, lime tone and dolomite; te overling eno

o 500 km

manianSantonian otinguiba Formation eentiall com-prie pure carbonate

Marine edimentation during the middle retaceou waalmot entirel conned to te outhern part of the bain(Ojeda Fugita 9 Fig. 58 . Thu, the Aptian eva-porite occur mainl in Sergipe, and Albian depoit (Ria-chuelo Formation are widel ditributed in te Sergipe

Bain An Aptian, or Albian, trangreion ma havebreaced the margin of the bain and left trace in theinterior of te Brazilian craton, e. g. , i n te Araripe �(K. Beurlen 9 b: 0 Near te BaiaSergipe tate bound-ar, in te vicinit ofParipiranga A) and Simåo Dia (S ,


8/83

eter Bentson Cenomanan Conacan o Sere

° °

FSSIS D ST 12 983)

°

SERGIPE -ALAGOAS BASIN

Fg 2 Geology of onshore portion of the Sergipelagoas Basin, including the Estncia area continental Cenozoic cover removed = taporanga Fault, E = Estncia, = taporanga, = aparatuba The arrow indicats the main outcrop area of the Cenoman

eroioa remat of marie edimet (Richter 9 3 5 ma beog either to thi tragreive eiode or to the

otiguiba SaucariLarajeira] deoitioa ceTe bae of the Riachueo Formatio i domiat terri-

geou gico Member with the carboate roortioicreaig uward (Taquari Member ad with ooite ador ocoite formig i area of haower water (Maruim

r:

�

D · . .. .

Post -Santonian(Pa9abu9u Formaton)

Cenomanan-Coniacian (Cotnguba Formation)

Aptian?CenomanianRiachuelo Formation)

Aptian(Muribeca Formation)

re-ptian

Fault

,

50 km

ianConiacian hown in Fig. 8 and in detai in ppendix 3 . dapt- ed from numerous soures mainl smus Pont 973 ig 6 data on Cenomanian in lagoas from Bntson in smus Carvaho 9780.)

Member The ea retreated at the ed of the Abia orear eomaia, eavig ome area exoed or emi

exoed Part of the Maruim Member wa the doomi tizeda a re ut of uratida exoure (Aguihada M ember adome edimet were rewored

Th e eomaia wa a eriod of ow deoitioa ratecoued with tectoic readjumet i the bocfauted


9/83

FOSSILS ND STRT 12 (1983)

Quaternary

Pliocne

Miocene

Oligocene

Eocene

Abian

Algoan

Bahian

Jurassic

Poterozoic?

Fg. Sragraph o he sedmenar sequenes o he Sergpeagas Basn onshore par (Based manl upn Shaller 1970

oor o te ain A a ret tere wa patc depoi tion ocomparative tin cacareo ediment wic in ome

ace conan ewoke maea a ea uaz oca-l te ediment are dolomitized.

owar te end o te enomanian tere wa a wide-read tranreon wic ao covered te tectoncallmore tale tncia area in te ot. Ojeda Fta( 19 Fi. 1 et tere are Albian ediment (Ria-ceo Formation a well n ti area ut tere nopalaeontooica pport or ti amption

Te ronian in mot area wa mared acceeratedidence ivin tic eqence o ime tone (S apucariMemer in area o ow terrieno inx and cacareomdtone Aracaj Memer in area wit proportionaower caronate prodction. ontinin reciproca movement o te ocated ain oor contrited o co-pico acie cane acro ort di tance and tee areao nmero dcontinitie ad intraormationa recciaed in te eqence. oward te oteat i.e. toward

MEMBERS

Aracaju

AguilhadaMaruimTauari

FORMATIONSSUBGROUPS

PiaqabquFormion

CoinguiaFormaion

RiachueloFormation

MuribecaFormaion

oruipeSbgop

Igreja NovSubgou

Geolocal ntess

GROUPS

arreiras

Sergip

ixo SoFancisco

Esncia

smus Pone 1973 Ojeda Fuga 1976 and smus 1981 loalLoer Creaeous sage names rom Br Campos 1981 )

t e centre o t e ain t e o tinia Formation radeinto te terrieno catic Piaa Formation (Am

181 O he conea e ouba ement (Aracaj Mem er ave been ond on n a retct-ed area in norteatern Serpe ( Ojeda Fita 19 Fi.18 . Onore near te coat te ormaton i oca vertin or abent e . . in boreoe WS S and AB AS (Ricter Sime 195 ee S24DI2 So ri-tvo c Bandeira 1 98 Fi 1 Te l med eececomined wit carcit or abence o tpica ronian o-i in oreoe on te contine nta e ed ea rier worrto potate a rea in eqence n ti part o e ain (eeor exampe Aric et al 192 Fi. 2 Qadro Gomide193:341 . owever oore tere i an noiierointerva in te aa Piaa Formation etween teAianeomaian and Santonian o Gomide Rio deaneiro peronal commnication 1982 wic probabcorrepond in time to te otinia Formation onorei.e. te enomanianoniacian i deveoped a Piaa


10/83

8 eter Bentson enoman an onacan o Sere

• NW Pee e

C

T

Cotinguiba

Cem

bRiachulo

FOSSILS ND STR 12 1983

Pee ffe SE .

:Pia abu u

?

Fg Schematic NWSE stratigraphcal section o the middle Cretaceos o the Sergipe Basin showing presmed relationships between ormations

faces n te deeper parts f te basn c Fguered Mraes 1 972 1 2 ; Fg 4 eren An aternatve r crarexpanatn cud be te exstence f a rdge parae t tecast durng te enmanannacan Rement et al197292 Fg D frmed as a resut f ser subsdence tan n mre margna areas Magnetcanma pat-

terns apparent supprt ts ptess Summeraes etal 19 In te

·nacan te sea tdre w eavng te margns f

te basn expsed unt te Santnanampanan Tsregressn as prbab due t seaward ttng f te basnOjeda Fugta 1 97 1 3 eadng t up f te presentnsre parts Man secndar structures c dsturb tesequen ces re sut frm te se t tng mvements n cmbn atn t sme akness Ojeda Fugta 19 71 4 147 e ue areas ere suecte t ersn c r-duced matera fr te castc Paabuu Frmatn On tecntnenta sef sedmentatn was essenta cntnuustrug te ate retaceus

Aer te cse f te carbnatedmnated ce tece terrgenus Santnanampanan transgressnas cvered te Aagan part f te basn Ts te Paa-buu depstna cce cntnued unt te end f te M-cene r even Pcene Asmus 1981 Fg Te presumedreatnsps f te mdde retaceus frmatns n Se rgpeare swn scematca n Fg 4 Te depstna str fte acue and tnguba frmatns as ustrated bBandera 1 978 Fg 1 9 as a seres f gures fdepstnaevents

Te extensve terature and n part ver detaed currentknwedge f te geg f Sergpe ree ct te mprtance f

ts area fr petreum prductn Te Sergpe Basn s tetrd mst mprtant petreum prvnce aer te Recnca-vTucan Baa and amps basns and as an estmated % f te recerabe petreum r eserves f BrazApprxmate 8 % f te Sergpean s trapped n teAptan Murbeca Frmatn Pnte et al. 198

Hstorcal reVeWTe bstratgrapca mst mprtant pubsed rgnaresearc n te enmanannacan f Sergpe s s um-marzed ere Empass s paced n surface geg andstratgrap ca usefu macrfaunas Nmenc atra updat

ng and ter sgncant taxnmc r stratgrapca re-marks are paced n square brackets Tese remarks cncernpartcuar ammntes frm examnatn f te cectnsf te M seu Nac na R de Janer cetns descr bedr cmmented upn b Wte and G Beuren Departa-ment Nacna da Prdu Mnera R de aner cMaur D uarte Wandere and B ender nversdad e F edera d R e Janer R de aner c MagaesBrt and Overa Brt nversdade Feera e Per-namuc ece c euren an nverst psaa c Rement Tat

A cmpete anntated stng f te fsss reprted n teterature frm te enmanannacan f Sergpe s

gven n Tabes 1 1 c are paced at te end f tecapter

An anntated bbgrap s gven n pp 2

Te s tr f gegca researc n te S erpe Bas n canbe dvded as fs n part after enz 1 9 teperd f te fregn traveers 1 82 1 87 2 te ntatn and cnsdatn f natna researc 1871943 te basc prspetng fr 19419 and 4 md-ern detaed and dversed researc pst19

The period of the foreign travellers

(1820-1875)

James Hendersn 1821 n s A Hstoy o te Bral devted a capter t te " Prvnce f Seregpe d' E Re nderte eadng "Mne rag e mentned te ccurrence fme Ts s prbab te rst pubsed reference t te


11/83

FSSIS ND SR 12 (1983

retces rcks f te Serpe Bsn lt te e fte eds ws nknwn t tt tme Sseqent frentrvelers pd lttle r n ttentn t te retces el- f ts re

Te rst elcl descrptn f Serpe ws nt ntl ers lter wen te ndn scentst rles Fred-erck Hrtt 1 87 plsed s nw clsscl Geol an

Pysical Geograp of Bral fllwng n erler smmrccnt f te sject Hrtt 1 88 ncldn te rst men-tn f mmntes frm Brzl Hrtt trvelled ln tecst etween R de Jner nd Pernmc n 187std n t e el nd erp nd cllectn g fssl s Afew mmntes nd strpd frm te twn f Mrmwere descred H tt 1 87 ncldn te new spees" eratites Harttii Paraascoceras hartti nfrtn tel nne f te spemens were red [Frm Htt's descrp-tns t ppers tt esdes Paraascoceras hartti te cllec-tn prl nclde d Hoplitoies r oilopoceras ( "eratites (Ammonites) Pierenalis Vn Bc; c vn Bc 1849

sme Puosia ( Ammonites Hallii Meek nd Hden?; cMeek Hden 187 nd sme xtropioceras ( "Ammonites Peruianus Vn Bc r Ammonites acutocarinatus S-mrd nd "Ammonites Gibbonianus e; c de Bc 1839Smrd 1 84 nd e 1 84 1 respectvel Ts s clerl mxtre f Albn nd T rnn frms wc s nderstn d-be cnsdern tt te fssls were cllected frm testreet pvement n Mrm Brnner 189:39 r dntedt Hrtt resdents f te twn] It lter ppered tt tespemen f " eratites Harttii cme frm te lclt BmJess ner te twn f rnjers Brnner 189:397Hrtt ls vsted te S pcr qrr n te Serpe Rverwere e cllected smll mmnte nd sme ncermdsTe mmnte ws nfrtntel nt des cred n d "mve een lst Mr 1 93 :27 [ In te cllectns f teMse Ncnl n R de Jner tere s bdl pre-served Subprionoyclus?, lbelled "Sergpe Mrm Sp-cr cllected te "mmss Gelgc see belwTs m well e te spemen n qestn] De t tepct f dnstc fssls te e f te Spcr edsws fr ln te sject f mc cnfsn nd dspteHrtt 187: tenttvel sdvded te ret-ces fSerpe n t lwer rp mddle retces? ndn pper rp Sennn? Fre smmrzes te s-trcl develpment f te mddle ret ces str trp f

te Sere sn

The initiation and consolidation of nationalresearch (875-940

Ts perd sw te cretn nd extnctn f te rstelcl srve f Brzl te "mmss Gel dImper d Brzl 1 87 1 877 drected Hrtt Orvl leA Der ne f Hrtt's stden ts wrked fr te "mms-s Gelgc; lter e becme Drectr f te GelgclDeprtment f te Mse Ncnl n R de Jner nd

ls te rst Drectr f te " Serv


12/83

1 eer Bengson enomana n- onacan o Sergpe

AASRIHIA

AAA

SANTONIAN

CONACIAN

TURONIAN

CENMANIAN

ALBAN

APTIA

CONACIAN

TRNAN

CENOMANIAN

Hartt 1

Cotinguiban groupenonan?)

-------

(

'

Lthastnus

Nannoconus tutt

Stenmann 11

ogetes et a.

enetes et a

Wghtoceas et a

Kossmat 195

whoe seQuence

Hedbegeadeoenss

hapeeas et a Hedbeea washtenss

obceas et a

g. . istorical development o age assignments and iostrati graphy o the middle Cretaceous sequences o Sergipe ocusing the

Douvilh� inLapparent 19

whoe seQuence

FC20 Hedbeeaeoenss

F0 Hedbegeawashtenss

FOSSILS D STRT 12 98

Hag 191?

Bom Jesus beds

de Oliveira199

Bom Jesus beds

- Lasto beds

Lasto beds

NC20: thastnusg;

Morais Rego199

Sahaa lmestes

Cedro lmestoesad sadses

Umb ootcmestoes

Rachuelomestoes adsansoes

HeX8pootcoptes emeaov

NC10 Nannoconustfut

P46 Gnetaceae

Oentes dvesus

P2 Eateospotes potensus

CenomanianConiacian Cotinguia Formation (excluding minor purely nomenclatorial changes arlier age assignments in


13/83

FOSSILS ND STRT 12 (1983

ary 193

y

oras Ro 1933 ary 193

-Så Gonao andSta za bds

----

puy m

aals 195 d lra195

Bndr 1959

Hstorcal reew

K. Brln 191(ammons)

AASIHIA

PNN

SNTONIN

CONIN

Laanjas Lmstonf- TUONN

Bom Jss ston

Gaa) BdsA a LmstonLa

stro mston

Viana (pollen)

C3 P 6 sp1

Sampaio North!lee 7(pollen)

PC/6

PC6

PC2

SaaaC Gop

Ub Goup

Riacu Group

K, Beurlen 7

nnamd

Vascocas t a

Mtococas

Tbco Bds

Nokntocas obcas

Sampaio North!lee 7(foraminifers)

C20

C10

Cdo and BomJss Lmston

Sapca andLaanjras bds

nnamd

G Beurlen 7 Schaller 7 Schaller 7(ammonites) (ammonites) (foraminifers)

, - -

309 Potxants113

tosnPotxantstosn

112/113

ammont zon "ammont zon

Coopoca a 307 Coopocascot a collt 112

Mtococas p30Mtococas sp

[2 _111

30 Motoncas 1111

sgpnss

Sampaio Reyment e al. Bengtson 7Norh!lee 7 7 (ammonites) (ammonies(osracodes)

Solerites

212/213 PonoccocasSolgts t a

t a Broscas

Sbponoccls Subponoccs

Bns t aBnts t

vascoctdsNoptycts t

toa t Kb

Knbas Pdoalcoc t

Acantocs Acantoa t

211

Stolzka a Grasonts t a

Motncas t a 30 Motoncrsgpnss

Sapuca andLaranjas ms tons

Mrm ormaton

Racu an

Schaller 7(benthic microfJ

212/213

211

SapucarLaranasormaton

Motoncas

xtopdocas

Dovcas

Concas

Schaller 7(poromorph)

50

451

f

Lima his paperBoltenhagen (ammonites)(alynomorphs)

19

Conacan 1

Tonan 3

1Tonan 2

Toan 1

Cnomanan

17Comanan 3

Cnomnan 2

1Comnn

ENONIN

LBIN

PTIN

CONC

TURONN

CENOMNN

CONC

URONIN

ENOMNIN

cluding he pian(?) lbian Riachuelo Formaion, up o and in-cuding he rs bozonaion presened or his ormaion, in 1961

B Biosraigraphical subdiisions or zonaons o he Cenoman ianConiacian, aer 96 Original spllings o oponyms reained


14/83

1 2 eter Bengtson enoman an- onacan of Serge

ncramd ccd Har frm Sapucar quarr asInoceramus (Serga) osonomaforms

In 1927 r appard A Geologcal omarson of SouthAmerca wth South Afrca Ax L Du T n f cassca rks n sr f r f cnnnadrf Du T as an ardn supprr f Afrd Wgnr's cnrvrsa r ad ravd xnsv n

Su Amra n 1 923 H cmpard racus casaasns n sds f Su Aanc and cncudda ad a cmmn rgn Du T 1 927 1 14

EP d Ovra 1929 n a sragrapca car fr f Braz rsrcd Bm Jsus ds rTurnan; asr ds r gvn as nmanan FgA

Mras Rg 1 929 sudvdd mdd racus fSrgp n Aan nmanan and Turnan Fg AA ar ar Maur 1934249 pusd an nrdrn sudvsn m ddu ppr Aan r Turnanand Maasrcan Fg A asd n a summar rvsn

f W's fss dscrpns Maur 193272299Frm d suds r rprd n n 1929 s av

Mras Rg [sc] 193339 48 cncudd a Sapucar ds suggsd Maur 193 Maasrcan ["Marrquan f Mras Rg] ar aara facs f Turna n H manand s s udvsnf mdd racus n Aan nmanan andTurnan aug rvsd un nams; cf Fg 14 andsuggsd a a Turnan ag fr ds arund Esncaand Aracaju; Fg A

Maur 1937 rdscrd ccns sudd W 1887 and ncudd fsss ccd MrasRg A n Turnan ca dr as sasd n ass f nds f noceramus labatus vn ScmAmmns frm nar [Sanara] r assgnd Euholtes Anaholtes and Turrltes, and a mdd Aan ag assuggsd Maur 1937228231 24224 Ts drm-nans r cnsd Bngsn n Rmn 198 1 1 88 [Sud f rgna sp mns ss a pds arr Turnan Mtona and Watnoceas? ] aur pacd Esnca and Iapranga ds prvsna n Aanan rss a aa srcan a r aucar bs" apuca msn; Fg A

Arsmns G D uar rprd n drk carrd un 193 n pubcans 1 93 193 8 ar cnan

ng usfu daa n cas and sss ccd H s rprsf Anaholtes spp and Turrltes sp frm dr mus cnsdrd n g Maur's msdncans sav aug Rx 1 938 1 8 1 8 crrc pacds spmns n r Turnan Ar Wandr 1 938 gav an accun fcas vsd durng drkn 193 [Tanks s da d rpr man f undscrd spmns n ccns f DparamnNacna da Prdu\ Mnra DNPM c succdd "Srv\ Ggc Mnragc d Bras n 1933can n prpr cazd]

Sm f spmns ccd Duar and Wandr-

r sd Rx 1 938 1 81 87 ; amng m ar ammns "Puzosa braslana Maur and "Scahtes sp frm r Turnan f aranj ras [Su d f spmns n ccns f Dvs d Gga Mnraga fDNPM ss a frmr can rfrrd Watnoceras? c guenthert Rmn and ar Watno

FOSSILS D STRT 12 9 8 3

ceras amuarense Arkang 'skj T map f Srgp n Rca's 193 9 Atlas geolgco o

Brasl s a smpd vrs n f Mras Rg's 1 92 mapsng nr racus and Es nca Grup [Pr-rzc?] undr n adng

In 1 94 Ovra nards prducd a cmprnsvxk n gg f Braz Geologa o Brasl c as

far as Srgp s cncrnd s man a snss fpusddaa T accmpanng ggca map fBraz AI dOvra gra xaggras xn f racusrcks n Srgp As n 194 E P d Ovra gav anaccun f drk carrd u as ar as 19 2 1 H as rs nrdu frman nams s Fg 14 anddsagrd Mras Rg 1 93 3 au ag f Sapucar ds "Sapucar Frman argung aMaur's 1 937 Maasrcan ag as crrc

The basic prospecting for oil (1940-1956)

T ns Nacna d Pr1 NP as crad n1938 In Januar 1939 as dscvrd n RcncavBasn Baa and prspng as xndd Srgp Basn n 1 94 n1 1 948 n rcnnassanc rkas carrd u Marqus 19 T fsss ccd rgnra sn Dvs d Gga Mnraga f Dparamn Nacna da Prd Mnra

Frm numrus pusd and unpusd rprsn xnsv d nvsgans n Srgp daa rvan nmanannacan r ncudd n annua rprs f ns N acna d Pr1 948a 1 9481949 1 9 1 and n arcs rdr 1 941 and nards 1 949 Im pran fss ccns r rug gr A I d Ovra P d Mura and A Wandr fNP Sm d srvans r pusd A I dOvra 1943 gr a ggca map f Srgp

In 1 943 a scnd rvsd and muc xndd dn fGeologa o Brasl Ovra nards 1943 appardT capr n racus f Srgp s na xpandd and as mr cmprnsv an A I d Ovra'scnmrar ar 14 bk cnans a mr -ad map f urp ara f mdd racus

Magas 1 92 1 93 dscrbd rs cpcradsfrm Srgp ccd frm [su aparauba NP

ggss T rsn f Holtoes suggsd Maga-s 192 a aranjras msn sensu amp1948; c Fg 14 rn mracd Turnanpss vn xndng n "Emscran Fg A

Modem detailed and diversied research(post1956)

T "mdrn prd f rsarc n racus fSrgp can sad gn n 19 n Prs crad n 193 ak vr xpran n Braz frm

NP cnracd Grma ggs Frz Bndr frdad map png f as n Ts as fd nn sd surfac and susurfac nvsgans dscrd n numrus unpusd Prrs rprs and ; fr xamp nR 19 In 193 rs d as dscvrd armps d Prrs 194 and prducn sard


15/83

FOSSILS ND STRT 1 2 1 9 8 3

1 94 I 1 98 xpra as xndd cninnal sl r rc rsrvs ar ng xpld day

On ms mpran s raigrapical r sls Bndrs r carrid 197 as mnd y E dOlivra 198 and K Brl 198 namely tat tinddd Sap car lims ns and mas sv aranj iras li ms s ar cntmprans facis and nt f

dly dspara ags as as sggsd r exampl yMaury 1937; Fg A rin A latral acis rlainsipad prpsd as early as 1933 y Mrais Rg ucam grally accpd nly ar Bndr's r

Frm Bndr's fssl cllctins E d Olivra 198rprtd r rs ime t ler Trnian ammniteammites and ppr Alian as cnrmd rg a nd aElobiceras Fg A A fll rpr n t Srgip Basin asplsd a yar lar Bdr 199 i a dald glgical map and lis s ssils cllcd An ammni cllcnfrm a qarry n te Itaaana rad [= lcaly S edr rn as gurd l 3:3 and said t nai ammites

Pseuaspioceras [alms crtanly Kamerunoceras , Vascoceras[praly Fagesia , and oilopocerasSans na 1 98 1 99 rvisd t cinid Hemias

terjacksoni Maury ic ad prvsly n sudid als y 193

Frm 191 nards svra paprs y K Burln ap-pard n glgy and palatlgy raus nrasrn Brazil In paprs K Brln 191a9 dsssd palaggrapy and rprted n cllcns Trnian fssils cing fr xample teammns Kamerunoceras and Pseuotissotia K Brln 1 91 c i rdcd ry a land arrr n tgar and SrgpAlagas asins sparating t nt ralad S Alanic cans K Brln 19a as als ers amp an ammni znain ApianAliansqc Fg A

r 1 92 dscrd 1 9 spi s f framinifrs f c3 r ad mnd sracd Brachthere asphenoies Rss as n s marrs "Sapcarirmai Amng s lcals n dsignad 8 suas Japaraa as caracrzd y andanExora [rm crrn nldg s p 49 a gd indca- mddlppr nmanan] eri prsnd aramral zan r Trnia Fg B asd n adan spis Heterohelix [alg is sampls

ee acua rve m enmanan an naan 1calts t] H attmpted t crrelae s framnfealzns t macrfssl sccessn f Sergp sng asly dned framrk f "assemlage znes Petr92 38 Fig B ren

MEM Sans 193 descred t ne spees fInoceramus frm nar n Nssa Snra d Scrrfrm a ar kn niaca ds]

T sracd prdmian tnga Frmatnas dscrd y Krmmln 194 as Brachythere (B )sapucariensis ad as gv a arly Trnan ag [alg lcaly data sggs arly nacian]

Rymt 19 rmard faal similariis - Ws Arca ad S Amria ting r t rsm frm Brazl [Srgip ammn spis Benueitesbenueensis Rym

alynmrps ad n usd i straigrapy y trrs sc 197 Hvr as ntil 19 at t rst

Historical reiew 1 3

palylgcal zan r t racs nrasternBrazl as plsd Mllr 19 sing n zn fr Turianaca Srgp Fig B

I a sadard mcrpalanlgical car r ra-csTrary nrastrn Brazl Bran 1 9 desg-ad a ramiral zn "Z cmprsing "S apcari/arairas Frman f lat nmananarly nac-

an ag Fg BFrnads 197 pulisd a deailed sragrapcal

car i rrs' znatins asd n sracdes pre-maan nly raminirs and plln Fig B

Br 197 dscried a adly presrvd ammnit cllcd y Bdr n Estnca ara n strn SrgpeH amd i etengonocers olieirai and datd it as Alian[n nn t nman ian Olivera Brit 199rdscrd clpcraids sdid y Magals 1 92 1 93 gr i addtinal maerial inclding lrTran ges Spathites? and a Pseuaspioceras peroanumW rm st Japaraa [T lattr spim n is n

ac a mddl nmanian uneganoceras and t rst plis rcrd a nmanan ammni frm Srgip

Vaa 199 plisd rrs' ramifral znainad cmpard palynlgical znatin t Wes AfricaF ig B

Rymn 1 99a rng mainly frm plisd dat arvd palaggrapy f t St Atlantic Hcncludd rm anal vdc a nral and StAlaic ceans cam prmanenly cnnctd lat in tearly Turna pssily an pmral cntact in tat Alan

K Brln 197 synszd arlr r in s Geologieon Brasilien and addd t ammnits Paramammites [= Mitonia and Neopchites t ler Turnian fana fSrgp 197:24 Uppr nmanian as indiatdrg ammnt etoicoceras 197 :24 K Berlnamd ds xpsd n t Estncia ara "TrcBds atr mst mpran fssil lcality and placedtm taivly i manian n e asis f taudanc Exoyra 197 :23 ; Fig B rin

G. Brl 197 dscrng sm ammnitscllcd y rrs glgss prpsd a znatin fr tepsAla sqnc Fig B cmplmn xistngApianAla znan Fi g A H addd t n generaPachesmoceras ppr [= er enmanan Parapuzosia

uer unan an mee rreer an rceras ler nacan [Ote r genea n fr Srgpe erals descrd r gred eg Grasonites and agesia, al -tg undr dierent names

Wk n a muc ndd satgrapcal evsn f teSrgp Basn as tae p in 193 y t omisso aeiso Estratigrca a Bacia e SergipeAlagoas f PtrrsT rslg plcain Scallr 197 is a asc rfrncer fr ggcal r in as in Fr derent isra-grapcal znats r marn seq ncs re prsnt-d asd ammns plan ramnirs nic mi-crsss ad sprmrps Fi g B A litstra igrapy f

e Srgp Bas as salisd inclding t n gnr ally accpd ams Racl Frmain fr lr parad tiga Frmatn fr t uppe r part f te middlracs sqc c Fig 14

K Brl 197a:94 cmmned frr n t srati-grapcal psi t "Tirc Frmatn Besds t


16/83

1 Peter Bengtson enomanianoniacian of Sergipe

speces f Exora e reprted a sma Liostrea and a specesf Plicatula In ne f severa ter papers n te mdderetaceus stratgrap and sedmentatn K Beuren 1 97 1 b 1 8 dscussed te er Turnan amnte faunasusng Petrbrs' Scaer 197 ammnte znatn butte desgnatn " Vascocerasoilopoceras fr te oilopocerasa colleti Zne He furter dscussed K Beuren

1 9 7 1b223 te faces reatnsps f te "SapucarLaranjeras Frmatn and reverted n part t te rgnacncept f te Sap ucar and L aranje ras mes tnes as su cces-sve depsts Te absence f ammntes [sic] frm te md-deupper Turnan " ammntenfree Zscenzne sadt be ce deveped as tnb edded S apu car mes tnesas expaned trug unfavurabe currents n a deeper-ater regme tan te Laranje ras mes tnes [Te expana-t n as actua muc smper nadequate cectng

Brt 1971 descrbed a [dubtfu nautd and treeammntes frm te Turnan [O ne de scrbed as Fagesiaas cected b Ben der nrtest f Rsr d atete and

s cannt be Turnan as stated Resuts f edrk n Sergpe n 1 99 b R A Rement

and E A Tat appeared n severa pubcatns Rement197 1a 1 97 1 b 1972 ; Rement Tat 1972a 1972b In teprncpa reprt Rement Tat 1972a te er Turnan as subdvded n te bass f ammntes addngWrightoceras t te fauna; Fg B and te age f te tapranga beds prevus referred t te ate enman an assn t be ear enmanan trug nds f Sharpeicerasand Stoliczkaia Frm te nac an te a utrs reprted frexampe eroniceras?, Solgerites Hauericeras Nowakites andrionocloceras " rionoclus

Tresen Quadrs 1971 and Quadrs Gmde1973 reprted te bstratgrapca resuts btaned bPetrbrs frm nannfsss T znes are recgnzed nte enmanannacan Fg B atug sren te er zne as been dented Te current framn-fera znat n use d b Petr brs as gve n b A urc et al 1 972 Fg 2; Fg B eren and subsequent eabrated bNgut Sants 1973 Tese atter autrs nted te dverst f te Aptanenmanan faunas b cmparsnt aacent trpca areas na s as expaneb an ecgca barrer n te narr strat tat separtedAfrca frm Sut Amerca a barrer cnsstng f ersant and g er turb uence tan are nrma fr ceanc

aters Suc cnd tns cud devep as a resut f excessveequatra prec ptatn prducng eav nux f fres a-ter bearng suspended matera

Neufv e 19739193 197912 descrbed stracdesfrm t Petr brs brees A er Turnan Brachthere sapucariensis Krmmeben as reprted frm ne fte cres 2IASE taken 2 km suteast f Itaprangaand 1 km nrteast f te Itapranga Faut; see Rcter Smes 197 seet S24ZDI2/4 S rstv [Inte 197 3 paper t e t bre es ere nadvertent mxedand te er Turnan matera as sad t derve frm acre taken east fapartuba Neufve 1 973 1 8

K Beuren 1 974 reveed te str f te Sut Atantc and cncuded man n te bass f ammnteevdence tat t became cnnected t te en tra Atantcbeteen te ear Turnan and te nacan

A rened pangca znatn as presented b Rega

FOSSIS D SR 12 9 8 3

e t a l 1 974 an d cmpared t current framnfer andnannfss znatns Sme substages ere furter dvdedatug n Sergpe n ne pen zne as recgnzed nte enmanannacan Fg B T e pen ra f teBrazan cntnenta margn as subseq uent descrbed bRega et al 197 ntemprar bstratgrapca rkn panmrps as carred ut b Herngreen 1 97

estabsed ne zne cmprsng te e enmanannacan? nterva Fg B

Rmen in Herngreen 19773 and Krmmeben 197reprted n Turnannacan stracdes Beses abun-dant and genera dmnant Brachthere (B) sapucariensisKrmmeben Bairia araypris and thereis are present

Bengtsn in Herngreen 197 added te er en-manan Grasonites t te ammnte fauna

In 1 97 a gegca map f te SergpeAagas Basnas pubsed Rcter Smes 197 cmprsng 33seets f 1 scae Te map s base d n Petr brs 'unpub sed gegca maps f 2 scae and s b asca

tstratgrapca atug t sme bstratgrapca ntes

A crreatn cart fr te Brazan sedmentar basnsas presented b Sampa Nrteet 1 97 cmprsngrevsed znatns based n pen framnfers and stra-cdes Fg B Te entre enmanan sequence s referredt te Racue Frmatn b cntrast t fr exampeOjeda Fugta 1 97 refer te enmanan t tetnguba Frmatn r t Lange 1 97 refers teer enmanan t te Racue Frmatn and teupper enmanan t te tnguba Frmatn Fr ds-cussn f te Racuetnguba bundar se e pp 38

4 1 Kenned per 19 7 and Kenned bban 1 97 frm stud f te ammnte dstrbutns arund teAtantc suggested tat "pen marne cndtns f ntactua rng beteen te entra and Sut Atantc de-veped durng te ate Aban Ts cntrasts t frexampe K Beuren's 9 74 recnstructns

Rement et al 1 97 cmpared te transgressnregres-sn pattern f Ngera and SergpeAagas and reprtedte fng ne ammnte genea from P engtsn s e-rk n Sergpe Hpoturrilites er enmanan Acanthoceras mdde enmanan seuocacoceras and Kanabiceras[n a subgenus f Euomphaloceras per 1978 upper

enmanan Watinoceras mdde Turnan Subprionoclusand eesiites upper Turnan and Barroisiceras ernacan Fg B Te nted permanent marne cnnexn beteen te entra and Sut Atantc frm teate enman an ear Turnan transgres sn; ccasna"spvers t fauna excange ccurred n te ate Ab-an and pssb as te mdde Aban [A mdd e r ateAban date fr nng te t mbs f te tantc as sncebeen supprted b Wedmann Neugebauer 1978 andFrster Scz 1979

In 1 97 seet S 24 Aracaju f te m gegcamap f Braz appeared Brun et al 1 97 At ts scae te

map cntans tte nfrmatn n te enmanannac-an but te accmpanng expanatn as an appendxamps amps 197 cntanng sme prevus unpubsed nfrmatn n fss cates and spemens nte cectns f DNP M [atug te map Fg 1 8 gves


17/83

FOSSILS ND STRT 12 (1983)

severa cait psitins incrrect] A wer enmanianAcanthoceras = Sharpeiceras and a niacian Gauthiericeraswere reprted rm Bender's cectin

eranc 1977, in cmparing te gastrpd aunas nrteastern Brazi and te Agerian Saara, isted twupper enmanian and nine wer Turnian gastrpdsrm P Bengtsn's Sergipe cectins

In a dis cussin te Turnian ammnite assciatins fte Tetan Ream, Rement 1978 remarked tat "inMrcc Taraa and Brazi Sergipe, Watinoceras andBenueites ccur in te same assciatins, atug te frmertends t predate te ccurrence te atter and te atterappears t persist aer te disappearance f te ast represent atives te rmer

Bengtsn 1979 presented a prvisina znatin f teenmanianniacian based n ammnite genera andcmpared t is wit curren t znatins bas ed n pankt icraminiers, nannssis and sprmrps Te ammn itesceme Fig B cmprised ten prvisina znes and in

cudes te rst reprts f uneganoeras c p 13 andAompsoeras rm te midde enmanian, and Thomelitesrm te upper enmanian

K Beuren's suppsitin 197:23, 197a:94 en-manian age r te Tibrci beds in te Estncia area wascnrmed b Bengtsn 98a trug te ccur rence fte ate enmanian ammnite Thomelites

Viana 198 summarized te micrpaaentgica suc-cessins te margina basins; wever, n specic mentin was made te Sergipe Basin

In tw papers , Brit 198, 1981 described in partredescribed an ecinderm cectin, cnsisting Phmosoma brailiensis Wite rm Santa uzia near Estncia

[prbab enmanian, in view te Thomelites mentinedabve], tw wer Turnian Hemiaster, a wer niacianHemiaster sp and a Stereo iaris sp , cected b Wandere in1934

In studies te micrra reatinsips between Africa

Historial review 1

and Sut America, Herngreen 1 981 :4 12 reprted tedinageate inoymnium rm " te Sergipe tin-guiba Frmatin pper Turnian r niacian [nwdated as ear niacian], and ima Btenagen 1981 subdivided te enmanianniacian int fur pan-mrp units Fig B

Apart rm te papers reviewed abve, a number f pa-

pers ave been pubised ver te past decade b gegists Petrbrs n te ge nera geg, stru ctura geg,paaegegrap, etc te Sergipe Basin and/r te entireeast Braziian cntinenta margin Tese incude Ojeda Bis 1972 , Asmus Prt 1974 , 198 , eister Auric 1972 , Asmus Pnte 1973 , WM amps et al. 1 974 , Asmus 1 97 , 1 98 1 , Pnte Asmus 197 , 1978 ,Ojeda Fugita 197 , Asmus arva 1978 , andPnte et al 1 9 8

Fossils reported in the literature

Tabes 1 1 ist a fssis reprted in te iterat ure frm teenmanianniacian f Sergipe, wit reevant remarksMst te micrssis are derived frm sre sequences,in wic te Santnian is nrma incuded in te tin-guiba depsi tina cce; terefre, te tab es fr micrfssisTabes 8 cver as tis stage

Te purpse te ists is t prvide cnvenient cmpari-sn wit aunas and ras ter areas Entries cnsist te rst mentin and descriptin eac taxn Werepssibe, ssi names are brugt up t date in te remarks Generic reassignments are nted were appicabe, were-as reidenticatins at species eve! are given n wen

rigina specimens ave been studie dFr macrssis Tabes 14 and 91, ages are given

witin te ramewrk ammnite units used ere in see pp 447 Fr micrssis, tis as genera nt been pssibe,due t ac k f diagnstic macrfssis in s ubs urface sampe s

abl l mmonites reported from the CenomanianConiacian of Sergipe giving origina names and rst authors; distinction is made between mention (M) noting if there are gures f) and fu taxonomic treatment T) . nric rassignments and reidentications from stud of oriina speimens nomencatoria updating stratigraphica comments notes on subsequent redescriptions etc are given in the remarks Where possibe age assignmets are brought up to date from current knowedge to conform with the ammonite subdivisions (itaics) of this paper

Taa are isted in chronoogica order of pubication Repositor of specimens designated b codes as foows D = Diviso de eoogia eMineraogia eartamento aciona a Prouo Minera Rio de aneiro M

=eartamento e Paeontooia Museu aciona Rio e

anerio; PM = aboratrio e Paeontoogia e Macei Petrobrs [art of coection subseuent transerre to Museu aciona an renumbere according ; Pe = nstituto de eocincias niversidade edera de Pernambuco Recife; PM = Paeontoogiska museetppsaa universitet ppsaa

Taxon

a itte mmonite

Cratits hartti nsp

Cratits (Ammonits pirdnalison Buc

Treat ment

M

T

T

Age

uronian or Coniaian l

uronian 1

Turonian?

uthor

artt 1870a

att 1870

Remarks

Possib specimen MN 4273 a poor pre- served Subrionolus? sp

Redescribed b White 1887) as Ammonits -hiras hartti, b att (1903) and Maur(1937) as Vasoras hartti, and b Oiveira

Brito (1969) as Pahasoras hartti Speimen D M 4959 of these authors is a Fagsia, and

probab so is LPM206 (now MN 5284 ) of Beuren (1970) and Rement Tait 1972a) Current name Paraasoras hartti

Probab a coiopoceratid


18/83


19/83

FOSSILS ND STT 12 (1983

Table (continud

Taon

Ponoclocras c haard Y oungProtxants trolsni n sporrstria tabuans nsp Pachdsmocs sp

Ngrcras? spGombocras? spGombocras gonglns c gongilnscomprssum Barber

Vasocras a globosum globusumeyent

Vasocras a globosum comprssum Barber

Treatent

T T TM

MMM

M

M

Psudotissotia c (auchioras nigr Mnsis nigrinsis (W oods

Psudotissotia (auhocras gabon Mnsis Lombard

Colopocras a ollt ya tt

Parapuosia? sp Tssotnae? gen et sp ndet

Psuotissotia c gabonnsisobard

agsa multiplx n sp

Mammts houbrt CollgnonKamrunorasaobsoni eyentopltods ingns (von oenenNophts tlingaorms SolgerGlbosocras glbosum eyent

auhocras planum (BarberWrghtocras walls eyent

Gombocras gonglns (W oods

Sharpicras sp

Mtoocras a ornatum Morean

nuts spinosus eyent

Coloporas discoidum Barber

Solgrs brano (SolgerPronicras? sp.Nowaits p

aurcras sp

Eulophoras ntalns yattPronoclus a guaaba nus

tenannSolgrts armat a (SolgerKamrunocras a sh (SolgerPronoclus sp

Prionoclus pdroanum StenmannMammts dixi eyentCollgnonras p

Stolckaia a afrianaPervnqureAcanthocras c quadratum CrckMantllcras sp

p Bengtsn

M

MM

T

T

MMMMM

MM

M

M

M

M

M

MM

M

MM

MMM

MMM

M

MM

ge

ConacanConiacianConacanCnomanan 1 and

Turonian 2Turonan 12Cnomanan Turonan 12

Turonian 2

Turonian 12

Turonian

Turonian

Turonan 2

Turonan 3Coniacian 1

Turonian

Turonan 2Turonian 2Turonan 2Turonian 2Turonian 2

Turonian ?Turonan

Turonian

Cnomanian

Cnomanan

Turonian 2

Turonian 2

Conacan Conacian Caan

Turonan 3

Turonan 2 or 3Conacan

Conacian Cnomanian

Cnomanian Cnomanian Cnomanian

Cnomanian

Turonan 2 Cenoanan

uthor

Brto 19 1

eyment 19 1a

eyent 19 1 b

eyent Tat192a

Matsuoto 19 3

Historical reiew

earks

Better reerred to Pronoclocras

ddtonal age data n challer (190

Probably Paravascocras (then ro Turonian 1= Vascocras gama ChoatProbably Spathits

Better reerred to Fagsa Specen LPM260gured also by eyent Ta t ( 19 2a as Vascocras c globosum

Specen LPM261 gured also by eyent Tat (192a as Vasoras c comprssum

Specen LPM2 10 labelled T sotnae aSolgrts

From lban beds not lower Turonan as statedProbably a large Douvllcras

Fgured by eyent Tat 19 2 a

= Nopchits cphalo tus (Courtllereers to specen P C 1404 an ndeterna ble colopoceratd

Fgured by eyent Tat ( 19 2a as Psudots

soa (Wrightoras wallsieers to specens PM C 383 (ndeternable

and PM C 1384 the latter a Vascocras gama Choat

Fgured by eyent Tat (19 2a and s better reerred to Grasonits

eers to specen PM C1460 probably a juve ne Grasonts

Probably reers to specen LPM316 a Watinocras amudarins (rkhangel'skj

eers to specen P C 1456 probably a Para

uosa speers to specmen PM C 1540 probably a puzo sne

eers to specmen PM C 1454 a opltods sp Better reerred to Pronoclocras

Better reerred to Euomphalocras (Kanabras Probably n error snce lsted ro an upperost Cenoanan localty Specmen not ound nPM collectons

Error or Psudaspidoras pdroanum (Whteers to specen P M C 1441 a Psudaspidocraseers to specens PM C 1390 and PM C 142 6

whch belong n Euomphalocras (Kanabicras

= Stolickaa (Shumarinaia africana

= Romancras sp. Based on rke l t al (195L411 and reden-

caton o Whte's (188 Ammonts oarcinatus( Matsuoto n litt 9th Nov 193 how

ever ths s hgh ly speculatve


20/83

1 8 Peer Bengson : enomani an� oniacian of Sergipe

ale oiue

Taon Treat ge ment

Caoceas sp M Cenomanian

Gaysonies sp M Ceomanian

Hypotuil ites sp M Ceomania 1Aanthoceas sp M Cenomania 3

Pseuocaoceas sp M Ceomaia 3Kanabiceas sp M Ceomania Watinoeas sp M Tuoian 2Subpionoclus sp M Tuoia 3eesiies sp. M Tuoian 3Baoisieas sp M CoiaiaGauhieiceas sp M Coiaian 1

Kanabieas septemseiaum (Cragin) M Ceomania

Dunveganoeas sp M Ceomaia 2Aompsoeas sp M Ceomaia 2Thomelites sp. M Cenomaia 3

uthor

oguti Santos1973

Bengtson in ern

green 1975Reyment e al 1976

Campos Campos1976

Reyment 1977

Bengtson 1979

FOSSIS ND SR 12 (983)

Remarks

Doubtul; no source given.

he Aanhoeas sp o Campos Campos (1976) is a Shapeieasoeae (Spath) rom Cenomaian

= Euomphaloceas Kaabiceas sp

Current name: Euomphaloeas Kanabieas septemseiaum

ote Comparison with Fig 39 herein ndicates that, o the genera repored in the literature, Euhoplies, Aahoplies, Scaphites, Paamammites,Eulophoceas, Pionoclus and Colligoniceas do not occur (ie have not been ound) in the CenomanianConiacian o Sergipe , and reports oMeengooceas, Poexaes, owakies igeiceas, and Geboceas are doubtu.

Tabe 2 Bivalves reported rom the CenomanianConiacian o Sergipe rrangement and symbo s as or able

aon reat ment

oeamus sp

Ostea wegmaniaa d Orbigny

Exoa conica Sowerby?

eihea seiesis n s. ima itelineata n sp.

Pliatula teuiostaa n sp Pteia liguomis Evans

ShumardAxiaea bieminis n sp

Isocaia supemesa n sp.

CobuLa sp MIsocaia bannei White TCobua ganguaaica n. sp

noceamus abiatus (von Sch lot heim) ?

abiau ceoensis n ssp T

Labiatus segipensis nssp

eithea quaicosata astoensis T n ssp

PLicatuLa ceoensis n sp Topha phax (Coquand)? T

ge

Tuonia 3(or Coiacia 1

Cenomaia 3?

Ceomaia 3?

TuoiaTuonian

Ceomaia 3�?Ceomaia 3�?

Ceomania 3�?

Cenomanian 3 ?

Tuoia 1�2Ceomania ?Ceomanian 3?

Tuoian 2

Tuoian 2

Tuonia 2

Tuoia 2

Tuoia 2Tuoia

uthor

artt 1868

White 1887

uarte 1935Maury 1937

Remarks

ge inerred rom artt (1870: 383384) entatively rerred to Posionomya by Whit (1887)and described as noceamus Segipia posionomyaomis n sp by Maury (1925 ) Current name:Segipia pos io omyaom is

Redescribed as Ostea casteLlobancoi n sp by Mau-

ry (1937) . Beter reerred(?) to Cuvosea Redescribed by Maury (1937) . Current name:Amphioe coica

edescribed by Maury 37 enamed ima Maelum segipica n nom byMaury (1937) , at hough not listed rom the u ronian Beter reerred to Pseuolimea

Redescribed by Maury (1 937)

ocality doubtul: age questional Current name: Gmeis biemiisocality doubtul: abel is lost Rerred to Psio

a by Buren (1971 b 20) and said to driv rom Coniacian Redescribed by Maury (1937) . Current name: iopistha PsiLomya supemesa

ge uncerta n because o mprecise locality data. Current name: Rostocaia banneiReerred to Anthonya by Beurlen (1964d) Bet

ter reerred to Cassatela (SubLaninia nity uncertain

Probably Myi oies o the M iloies (Mantell) group.

Probaby MytiLo ies o the M subhenicus (Seitz) group

Reerred to eihea shawi Pervinquire by Beurlen (1964e)


21/83

FOIL AND TRATA 12 (1983)

Table 2 coue

Taxon Tea Agemen

Eoa haooea (oweby) T Tuoa 1-2

Mooa sahaca n sp T Tuoa 2

Caum sp M Tuoa 1-2?Haoba sp M Tuoa 1-2?Myococha sp M Tuoa 1-2?Myophoa sp M Tuoa 1-2?Myus M Tuoa 1-2?Pece Chas sp M Tuoa 1-2?ehea quacosaa (oweby) M Tuoa 1-2?

Pa sp M Coaca Pheopea sp M Tonian-

Coniacianuca sp M Tonian-

ConiacianCassaea sp M Tonian

ConiacianTapes? sp. M Tonan-

ConiacianPhoaoa sp M Tonian

ConiacianIoceamus segpess M Tonian-

ConiacianTgoaca afuo Daevelle M Tonian-

Coniacian a hevesess (Coqand) M Tonian

ConiacianFagum peobquum (von Koenen) M Tonian-

Coniacianopsha a cuvaa (Riedel) M Tonian-

Coniacian

Anhonya? sp M Tonian-Coniacian

Psomya sp M TonianConiacian

Osea sp M Coaca

Ioceamus wae n sp T Coaca

Ioceamus emoaus n .sp T Coaca

osea sp M Ceomaa 3?Asae bue Ha M Ceomaa 3-4?

Leanc, Monpelie, esona communicaion 92 M H Rieio Hesse, Baslia, pesonal commnicaion 1 9 E G Kaman, Bolde, Coloado, pesonal commnicaion 99

Aho

Roxo 1938

K Belen 196 1 a

Historical reiew

Remaks

Age nceain becase of impecise localiy daa.Cen name Amphoe coa haooea

Aibed o Vosea (invalid name) by Maga

hes Mezzalia (1 953) cen name Moous sahacusAge nceai becase ofimpecise localiy daaDio.DioDioDioDioDio Refeed o shaw evinqie by K

Belen ( 1964e)

K Belen 19 61 b obably efes o I abaus segpess May

K Belen 1964c

ME C.M anos1962

MECM anos1963

K Belen 19 1 a

obably es o Gaocaum

obably efes o Cassaea aa

Addi ional age daa in G Blen ( 1 90) .

obably Cemoceamus waesoess (Ande )

obably Ioceamus pepeus Whield o Cemoceamus ouaus (Fiee

Campos Campos Aho of species dobfl96

Tae 3 Gasopods epoed om he Cenomanian-Coniacian of egipe Aangemen and symbols as fo Table

Taxon

Mesaa hebe nspPaagaucoa sp

eea apoagca nspEpoum pee Whie

uaa subhumeosa WhieTyosoma m m um WhieAmpuospa whe Cossmann

Teamen

TM

TM

MMM

Age

Ceomaa 3-4?Tuona 1-2?

Ceomaa ?Tuona 1-2?

Tuoa 1-2?Tuoa 1-2?Tuoa 1-2?

Aho

Whie 88Dae 1 935

May 193Roxo 1938

Remaks

Redescibed by May (193) Age nceai n becase of impecise local iy daaGens cenly placed in Gaucoa

Age nceain becase of impecise localiy daa

eviosly epo ed fom he Albian by Whi( 88 ) and May ( 193 )

DioDioAge nceain becase of impecise ocaliy daa

eviosly epoed fom he Albian by May( 93 )


22/83

Peter Bengtson : enomanian oniacian of Sergipe

able 3 (otiue

Taxon Tea Agemen

Ceithium iahueanum May M Tuonian -2?

Euspia segipesis May M Tuoia -2?atica egenhoae May M Tuonian 1-2?

Paagauconia ia ay Tuonian 12?Monoonta sp M Tuonian -2?

einea sp M Tuonia 12?

Tubo sp M Coniacian ?

Tuitea sp M CenomanianConiacian

Cf Piestohius beichei Thomas Cenomanianon) Coniacian

Tyostoma whitei von Iheing M Coniacian

Tuitea (Haustato aegozica M Ceomaian 3-4

MayAeana (Ringinea pinguisua M Ceomaian 34

WhieTohus (Eucus c apousei M Ceomanian -4

dAchiacPteoea c ecussata Zekeli Ceomanian 3Tuonia 2

Chenopus (Heiauax subgibbosus Tuoian 1-2evinqie

Ampuina (Pseuamaua bu bomis Tuoia 2oweby)

Piesto hius (Cptohytis cf theves Tuoniatensis (Coqand)

Mesohytis cf gapaini dObigny) Tuoia o 2

Vouta (Auia a etacea Tuonia 2Coqand)

Vouta (Rosteites cf eogata Cenomaia 3

(dObigny)Acea bowi Whie M Tuonia n 2

J Lefanc onpellie pesona commnicaion 198 2

Aho

K Belen 196 1 a

K Belen 19 6 1 b

Reymen Tai192a

Lefanc 19

Remaks

DioDioDio

FIL AND TRATA 12 ( 19 83)

Dio Gens cenly eaed as auoiaAge nceain becase of impecise localiy daaDioDioAge wihin ange given

Age wihin ange given

eviosly epoed fom he Alban by May 1 9 3 )

eviosly epoed fom he Albian by Whie( 188 ) and May ( 193 )

eviosly epoed fom he Albian by Whie188) and May 193

Bee efeed o Ampuospia (Amauopsis

obably close o Mesohytis eauxianus (dbiny)

Bee efeed o Voutomopha oneosly ivenas ealy Tonian

Feqenly spelled Akea eviosly epoedfom he Albian by Whie 188) and ay( 1 93 )

Tabe 4 chinoids epoed fom he CenomanianConiacian of egipe Aangemen and symbols as fo Table

Taxon Teamen

Phymosoma baziie nsis n sp T

Phymosom a? sp THemiaste i saus olicka? T

Ehinobissusfeitasi Whie

Hemiaste ceoensis May

Cyphosoma santaeuci ae nsp T

Hemiastejaksoni May T

Hemiaste eoensis n sp T

Ciais sp MHemiaste sp M

Saenia sp MSteeoiais sp THemiaste sp T

Age

Ceomaia 3-4?

Cenomaia 3-4?Tuonian

Tuonian )

Tuonian 2?

Cenomania 3

Tuonian -Coniaian

Tuonia 2

Tuonian o 2Cenomanian and

Coniaian Cenomanian ConiaianConiacian

Aho

Whie

Deby 188b

Dae 1935

May 193

Roxo 1938challe 190

Bio 1980Bi o 1981

Remaks

Redescibed y ay 193) as belonging oCyphosoma and by Bio 1 980) Refeed oRahiosoma by K Belen ( 1964f)

oneosly ?) no indicaed fom Bom Jess inable of Deby ( 188 b) Redescibed fom RioGande do Noe by RT Jackson and namedH jaksoni by May ( 1925 5 18-521 )

oneosly(?) maked fom Bom Jess Whie188) and May ( 193 262) indicae hespeies only fom he Albian

omen nuum nil he pblicaion of May 1 93 )

Redescibed by Bio 1 980) as Phymosoma santaeuiae

Redescibed by Cooke 1953) anos Cnha(1959) and Bio 1 9 8 1 )

Redescibed by Bio ( 1 981 )

Addi ional age daa in Bio ( 1 980)


23/83

FOIL AND TRATA 12 (1983) Histoical reiew 1

Tabl Foaminifes epoed fom he Cenomaniananonian of egipe Aangemen and symbo ls as fo Table l

Taxon

Disona sp inde

Amm obaulits hatti n sp

Bignina uzbio i nsp

Bolivina plaia CaseyCibiis mnsi n sp Dntalina bogsi n sp Globotunanafoiata lmmea akmanni Gandol

Gumblitia kgli n sp

Htohlix momani (Cshman)

Htohlix ul timatum ia (Whie)

ntiulina bni n sp

onionla lonaosi n sp oosaia mouai n sp Planulaia sp bPlanulina otinguibnsis n sp PLuostomlla atsi Cshman

PagLobotunana gautinsisBnnimann)

SpiopLtammina goi nspCibiiina sp

Txtulaia sp

VaginuLina uati n sp Vaginulina sp

GLobigina sp Gumblina sp Globotunanafoiata lmme

Rugoglobigina ugosa (lmme)

Hbglla lionsis (Casey)

GLobotunana ilso ni Bolli

Htohlix ussi (Cshman)

Hbglla Lanisia (Tappan)

Hbglla ashitnsi s (Casey)

GLobotunana inoata Bolli

Hbglla Lionsi s (Casey) andomly coiled

Hbglla lionsis Casey) dexally oiled

Rotalipoa voluta (igal)PagLobotunana lionsis (lm

me)Hbglla amabiLis Loeblih &

TappanGubkinlla gaysonnsis (Tappan)GLobiginllois aglonsis

Moeman)

CLavihbglla nsp

GLobotunana nzi Gandol

GLobiginLLois sp

Teamen

M

T

T

TTTT

T

T

T

T

TTTTT

T

TM

M

TT

MMM

M

M

M

M

M

M

M

M

M

MM

M

MM

M

M

M

Age

Tuonian

Cnomanian 2-Tuonian 2

Cnomanian 2Tuonian 2

ConiaianConiaianConiaianConiaian

Cnomanian 2-Tuonian 2

lae Cenomanian?anonian

Tuonian 2 oConiaian

Tuonian 3 oanonian

ConiaianConiaianConiaianConiaian

Cniaian- an onia n Cnomanian o

Coniaian Coniaian Tuonian 2-

Coniaian Cnomanian 2

Aho

May 937

ei 962

Remaks

Dobflly a foamiife Loaliy eoeosly(?given as Laso (Albian?) in English ex




Addiional age daa Ban ( 1966) Viana(1969) and halle ( 1970)

Ranges hogho ineval given

Addiional age daa in halle ( 1970)

Refeed by halle (1970) o Hast{iginoiswih addiional age daa

Ranges hogho ineval given


Age wihin ange givenTuonian 2

ConiaianConiaian

Coniaian ?Coniaian ?Coniaian

Kmmelbein 964 oably HbgLLa o FavuslLa

anonianTonian

anonianCenomanian

anonianConiaian

anonianTonian

anoniannomanian

anoniaealy Cenoanian

Ban 1966

Tonian- Viana 1969anonian

Cenomanianmiddle Tonian?

Toniananonian

ealy Cenomanian halle 1970eal y Cenomania

Cenomaniananonian

ealy Cenomanianealy Cenomanian

lae Cenomanian

Coniaiananonin

oniananonian

obably Htohlix

Addiional age daa in Viana ( 1 969) and halle( 1 970 ) .

Addiional age daa in Viana ( 1 969) and hall( 1 970 ) .

Addiional age daa in Viana ( 1969) halle( 1970) and Nogi & anos ( 1973 )

peies en ly efeed o FavusLLa (Ha t al

9 Addiional age daa in halle (1970) an Nogi & anos ( 1973) .

Addiional age daa in halle ( 1 970 ) and Nogi & anos 1973 )

Addiional age daa i challe (197

Repoed only fom Riachelo FomaionRepoed only fom Riachelo Fomaion

Addiional age daa in Nogi & anos ( 1973 )

Repoed on ly fom Riachelo Fomai on

Occence dobfl (challe 1970:63 cona dics Fig 25) peies cenly efeed o Maginotana

(Ha tal 1 9 8 1 )


24/83

eter Bentson Cenomanan- Conacan o Sere

T 5 ou

Taxn Tea Agemen

Clavihebegella smplx (w) TninSnnian

Hastigeioies alexaei (Csh M le Tnin-mn) Snnian

Planoglobulina glabata (Cshmn) Y SnninGlobigeinelloies messiae (Bnni Snnianmann)

Rugoglobigea macocephala Bn Snninn mnn

Rugoglobigeina ugosa (lmme) Y SnninEpistomina spinulea (Ress) Cenmanian?Clavulinoies sp 3 Cenmnin?Planulina sp 5 CenmninTocholina si lva ei CenmninGlobootalites sp 3 M Cenmnin?Tistix sp M CenmanianSiphogeneino ies etata Chenad middle Tnin-

de lasz & Meije SnninPlanulina sp Y Cniin-

SanninThomasinella sp Cenmnin

Rotalipoa cushmani (Mw) middle Cenmnin

Heteoheix stiata (henbeg) Tnin-Snnin

Ah

Ngi & Sns1 93

Rmein i Hengeen 195

FOL S A D SR ( 1 983 )

Remks

Species cenly efeed Hebegella (Hetal 1 9 8 1 )

Addiinl ge da i n Ngi & ans ( 19 3 )

i�b� Fmin n y?Di

Di

DiRichel Fmain nly?DiDiDi Di Di

esence in Segipe n specied

esence in Segipe n specied

Table 6 Oscdes eped fm he Cenmnin-Snnin f Segipe Anemen nd symbls s f Tble

Txn

Bachthee spheoies Rss

Bachythee B sapucaie nsis nsp

Bahythee nn sapucaiesis

Potothee sppCytheeis spp

Cyheide

Paapis sp

Baiia sp

Paapis sp

Cythee is c logaeva logaevakn

Temen

T

M

Y

Age

Tnian-Cnicin

TnianSnnin

Cnician-Snnin

CenmanianTnian-

CniacianTnin-

nnTnin

CnicinTnian-

Snnin

TninSnninTnin

Sannin

Ah Remks

ei 1 962 bly efes B (B sapucaiensis Kmmebein

mmelbein 1964 Redescibed by efville ( 1 9 3 19 9) Addiina ge da in Schlle ( 1 90)

Schlle 190

mmelbein 195

Rmein i Hengeen 195

Reped nly fm Riachel Fmain

Sid die slighly fm his species

Table 7 nnfssils eped fm he Cenmnin-Snnian f Segipe Aangemen nd symbls s f Table

Taxn Temen

Petobasiella venata n sp T

ithastinus gilli Sadne M

ithastinus oalis Sadne M

Watznaueia banesae (Back)

Age

Tnian-Sannin

Tnian

SnnianTnian-

SanninCenmnin-

Snnian

Ah

Tesen & ads1 9 1

Remks

Occence in Segipe n specied

Di


25/83

FO IL AND TRATA 8 )

Table 7 oiued

axon

Miula sp

Miohabdulus sp

annus uii Bnnimannannus spp

Teamen

M

M

MM

Age

Coniacian-anonian

Coniacian-anonian

CenomanianCenomanian

Aho

Hrcl ree 3

Remaks

Dio

Di

Rihelo omaion (ados & Gomide 7 Rihelo Fomaion (ados & Gomide 7 )

TabLe 8 alynomophs epod fom he Cno maniananonian of egipe Aangemen and symbo ls as fo Tabl

Taxon Teamen

Ciaiosispoies sp M

ohe ilee spoes" M

Aauaiaies (and simil a foms) M

smooh monocolpaes (pedomi Mnanly Gikgoadophyus

Classopollis sp M

olyplicaae (pedominanly Ephedipies sp )

C Euommiidies sp M

Tipyches

Echinae iolpodioae gains M

yhoipoines M

Tipoines M

olypoines M

Classopollis majo Goo & Goo MClassopollis espinado MGaleaoea aumiaa [ove M

Geales sp M

Hexapooiolpies sp M

Dinoagellaes M

H yschosheds M

Geaeaepollenies diesus ove M

Tioies afiaensis Jadin & MMagloie

Klukispoies aiegaus Cope M

yopdiumspoies o omex iaum MDgg

Tilies sp MA auaiaies ausalis Cookson MClassopollis lassoides ocok & M

JansonisHexapooilpies emeliai M

BolenhagenGaleaonea ausea ove MElaeospoies klas Jadin M

Age

Tonian-anonian

Tonian-anonian

ToniananonianTonian-

anonianTonian-

anonianTonian-

anonianTonian-

anonianTonian-

anonianTonian-

anonianTonian-

anonianTonian-

anonianTonian-

anonianCenomanianCenomanianCenomanian

Cenomanian-Coniacian

Tonian-Coniaian

Tonian-Coniaian

Tonan-

onaanlae Cenomanian

Cenomanian

lae Cenomanan

lae C enomanan

lae Cenomanianlae Cenomanianlae Cenomanian

lae Cenomanian

lae Cenomanianlae C enomanian

Aho

Mlle 1 966

challe 70

Regali e al 7

Remaks

Refes o Hexapooolpie emeiaoi Bolnhagen

Figed by Regali e a l 75 ) obably ome udumesmed o be Elaeospoies aumiaus (ove)

by Hengeen 7 5 : 5 )

Index fossl of Zone C46, alhogh sa no ooc n egipe by Regali e a l 75 )

Fige by Regali e al 75) Adiional agedaa given by Lima & Bolenhagen 8 )

esence n lae Cenomanian of egpe no specied Daing of his and followng ses aslae Cenomanan s b as d on he ocnconly of Zone C46 in egipe Fge by gal e a l 75 )

Dio

DioDioDio

Dio

DioDio


26/83

4 Peter Bengtson : enomanianoniacian of Sergipe

Table 8 cotiu

axon Tea Agemen

Elatocolpits castlaii & M lae CenomanianMagloie

Elatoplicits aficasis Hengeen M lae CenomanianPomoolits poticulatus Benne M lae CenomanianPiastum palogits Wilson & M lae Cenomanian

HomeiseMultipoopollits a maculosus M lae Cenomanianhomson & g

Multipoopollit pogoalis Jadi M lae Cenomanian

n & MagloieMultipoopollits sp C I 105 i M lae CenomanianJadin & Magloie ( 1 965)

Schiza cta Bolkhoviina M lae Cenomanian

Ephipits uulaus nsp M lae C enomanianSofpits lgouxaJadin M lae Cenomanian-

onianticulataspoits jaius Benne M ae Cenomaian

Ephipits baghooistapliii M Cenomanian-(ocock) Coniacian

Stvsipollits c bioosus ove M Cenomanian-Coniacian

slaicolpaes M Cenomanian-Coniacian

Stiaticolpits sp M Cenomanian-Coniacian

Reiicolpaes Cenomanian-Coniacian

Psilaticolpoits sp Cenomanian-Coniacian

Ctacaipoits mullii Hengeen M Cenomanian-oniacian

Ephipits sub tilis Regali U es M ealy Cenomanan

gi & anosEphipits ptacostatus Regali M ealy Cenomanian

Uesgi & anosStsipollits multiliatus ove M ealy enomanianPsilaticolpits papilio omis M ealy Cenomanian

Regali Uesgi & anosClassopollis basilisis Hengeen M CenomanianEphipits lsikii Hengeen M lae CenomanianGtacapollits cassipoli Regali Tonian

Uesgi & anostcaoits simiLis Regai TunianUesgi & anos

Stsipollits ativsis Regali M ConiacianUesgi & anos

Gaboispois vigoouxii Bol enhagen M Coniacian

Cuaiiits ticuLais Cookson & Coniacianike

Bahiaspoits ticulais Regali M ConiacianUesgi & anos

Bulbopollis sp M Ciacia Diomium acumiatum vi M Coiacia l

Clake & VedieDiomium uclasis Cookson & M Coiacia

isenack

G F W Hengeen Haalem pesonal commnicaion 1982

Aho Remaks

Dio

DioDioDio

FOIL AD TRATA 12 ( 983)

Dio Bee efeed o Ctacaipoits

Dio

Dio

esence in lae Cenomanian of egipe no specied Descibed by Regali t al ( 1 95 )

Dio om uum nil 195 Dio Addi ional age daa in Lima & Bolen

hagen ( 1 9 1 ) Regali t al ( 1 95 ) aid no o occ i n Zone C46 by Regali tal

( 1 94 )

Hengeen 195

Lima & Bolenhagen 1981

Hengeen 1981

esence in egipe no specied

Dio

DioDio

DioDio= Ephipits lsikii Hengen esence in egipe no specied

Peenc in Segipe n pecied

Dio

Dio

io

Dio

Tabl 9 Veebaes epoed fom he Ceno manianConiacian of egipe Aangemen and symbols as fo able .

axon ea Age Aho Remaksmen

Fishes M Tuoia 3 Ha 1 0a(o Coiacia 1

eleosean sh scales M Cenomanian- Addiional age daa in Roxo (1938) and eiConiacian ( 1 962 )


27/83

FOIL AND TRATA 12 (1983)

Table 9 cotue

Taxn

Pcnousab ellatus n sp

astochths logpetoals nsp

ChicenidaeFish eeAmphicels veebae

Tan

T

T

MMM

e

Tnian? Cniacian?

Tnian? Cniacian?

Ceomaa ?ndieeniaedCeomaa and

Tuoa 2

A

Cpe 1885

caee 194

R ans 1958ei 1962

Fielwork an methos 5

ks

In aggy liesne (sggesing Cingiba Fmain) lcaliy nknwn edesced Wdwad ( 1895, 1 90) and May ( 1 93 asPalaeobalstum abellatum and ged (p

gaph) als by Mains (1959)In aggy limesne (sggesing Cingiba Fmain), alhg label saes Las liiclimesne" Redescibed by ans & algad(1969) as chous logpetoals

Reped fm vais leves

Table 1 Fssils he an se lised in Tables 1-9, ep ed f e Cenanian-Cniacian f egipe Aangemen a nd sybls a s fTable I

Taxn Tea Age

en

Uaste sp T Tuoa 3( Coaa 1

Callaassa aqulae Rahbn M TnianCallaassa aqulae va elogata M TnianCallaassa segpess n sp M TnianCallanassa sp inde M Tnianpnge spicles M ndieeniaedByza M lae Ceaces?

Hecglssidae gen e s p inde T Tuoa 2Cmatoc eas sp M Ceomaa

Field-work and methodsMst researc te mdd e r etaceus f Sergpe as beerected ards te Racue Frmat Fr te verg tguba Frmat, spt e f te extesve ter aturesee pp 556 ) te rc fauas ave bee t pr kt a detaed crreat t ter areas

Accrdg t te lterature, abut 3 caltes tetgu ba Frmat ad prevusl bee samped fr fs-ss ad ter auas te descrbed us, a basc sstemat

c vetr f te auas f te etre sequece as re-ured Apprxmate 6 sects ere seected t prvdea ufrm gegrapca ad stratgrapca grd t teareas expsed Partcuar empass as paced ess ek ad gegrapca mre pr represeted parts te sequece, tat s, te emaa, te uppermst ura ad te aca A fe cates vestgated teRacuetguba budar beds ccurrg t tetguba belt te gegcal map f Rcter Smes 975 ) ma be f Alba age Hever, sce te pssbtf a emaa age cat be rued ut , te se cates arecuded te vestgat

Topographical and geolgical aps

As te bass fr edrk I used Petrbrs' upubsed 5 tpgrapcal maps t ctur tervas f 1 m

Ah

Wie 188

K Beln 1955

ei 1962Rice 1 96

Bi 19 1eymen & Tai

192a

Remaks

Named Uaste jattae by May ( 193) , wicpy f Wies descipin" and geUaste s nw placed in synnymy wi Asteas

omen uum?ome uum

Reped fm vais levesFm lie wes f e egipe Basin sesu

sttoly peseved pehaps an ammnie

Servs Aerftgramtrcs ruzer d Su SA: Bacia eSergipeA lagoas Mapa topogrco Seets 63531 1966 ad197) 63534 1964) 63543 1966 ad 197) 71 33 1 966 ) 7 1 1 1 966 ) 7 1 1 966 ) 7 1 3 1 966 ) 7 41 1966) ad 744 1966) Petrbrs SA , R deJaer I beetted great frm frmat te cmpreesve, tera gegca reprts f Petrbrs taccmpag 1 : 5 gelg ca map seets HAF aves 1964: Gelga d leste de Sergpe [Reevat mapseets 63 34 63 4 3 7 1 1 7 1 7 1 3 elarioNo Pte, W. S de Areu G G Ner 64Gega da parte su d a baca sedmetar de S ergpe [Re-evat map seets 71 33 741 744 elrio No1 F Pte, A B Nues, 1 A Smes, W. S deAbreu GG Ner 1 967 : Gega da faxa sedmetar dbax S Fracsc [Reevat map seet 6 35 3 1 elario No 1 A Smes F P aer 1 968: Gega darea de Pramb, armps e Racue [Relevat mapseets : 63534 6354 elatrio No 1 Al are teralreprts Petre Braser SA Petrbrs, R de Ja-er

e tpgrapcal maps pubsed f Sergpe are

1 : 1 t 4 m ctur tervas SUDENE 1974) Seets C4ZBIV Aracau, C4ZBV Japaratubaad C4ZDI Estca cver te area vestgated

e etre SergpeAlagas Bas s cvered b 1 5 gegca maps Rcter Smes 1975) t tpgrap


28/83

6 Peter Bengson enomani an- oniacian of Sergipe

cal contous at 50 m intevals Unfotuna tely few oads aeindicated (not always the main oads) and only an occasion-al place name These factos and the widely spaced contouintevals make the published geological maps dicult to usefo statigaphical eldwok The publication of detailedtopogaphical maps of 1 :5 000 o 1 50 000 would be of geatvalue fo fu tue eldwok in the basin

The geological map sheets (Richte i mes 75) l istedbelow (fom south to noth) contain data on the CotinguibaFomation aentheses indicate subsuface occuences

shown by boehole data

C4ZDI3 EstnciaC4ZDI algado(C 4ZDI/4 o Cistvo)C4ZBIV3 Itapoanga dAjudaC4ZBIV4 AacajuC4ZBV3 Rio omonga) 4Z RacueloC 4ZBV C ampolis(C4ZBV onta dos Mangues)(C4ZBII4 enedo)

The base data on the map accompanying this pape (Appendi 3) ae taken manly fom the geological maps of Richte i mes ( 1 7 5) with the oad netwok updated wheenecessay Mino oads and tacks wee tansfeed fometobs' unpublished topogaphical maps (fo efeencessee above) o witten in diectly in the eld Apat fommain oads on ly oads leading to localities investigated aeshown on the map The Estnca aea in the southen pat ofthe basin is shown on a sepaate map (ig 41 p 48)

The investigation is based on eldwok published dataand the unpublished eto bs mateial listed above O the

unpublished epots and pimay mateial fom peviousinvestigations (eld ntes sketch maps etc) kept in a-chives ofD NM etobs geology depatments etc weenot consulted

FO L AN D TRATA ( 1 9 8 )

Fig 6 Ve of he Mucu area W ofrr aken o he souhes from

hghay BR5

Exposures and accessibility

The egipe Basin les within the topical belt betweenlatitudes 1 0 and 1 5° ( c Fig ) C etaceous maine ockscop out within the coastal vegetational one maa ("fo-est) which is nowadays spasely foested and etensivelycultivated mostly fo suga cane The climate is classied asAs using the Kppen system ie topical ain climate withdy summes The landscape is undulating (Fig 6) withhi ls locally eaching 50 m o moe above the su ounding

teain The majo ives ae tidal estuaies bodeed bymangove swamps ( Fig 7) which ae ofwide etent in someaeas

The Cenooic continental Baeias Goup foms the su-cial deposit s of etensive aeas along the coast of noth easten Bail In the egpe Basin thee ae numeous win-dows in this cove which povide intemittent eposue ofthe Mesooic bedock The CenomanianC oniacian is failywe exose n e eaten onoe a o e asn g8) fom Itapoanga in southen egipe toapaatuba in thenotheasten pat of the state The localities selected foinvestigation lie in this the study aea (the Estncia aea in

southenmost egipe is discussed sepaately pp 4748)In many places in the stud aea oc occus as loosedebis but no in situ bedock is evident Fig ) This isusully a good ndcaton of a vey thin sol cove (Fi g 1 0) and snce stong tanspoting agents ae lacking I assumesuch loose mateial to be vey locally deived

The main aticial eposues ae oad and ailway sec-tions quaies suface eposues along tacks and minooads and ecavations fo constuctions The pimitivequaying technique that is manual wok with cowbasand sledgehammes (Fig l ) used in all but two quaies(Oiteio 1 and Retio 15) facilitates the discovey of ma-cofossils (c p )

he topical climate ca us es apid changes in geomophology and vegetation Thus within shot peiods small out-cops can easily disappea and new outcops ae constantlyappeaing Fo eample the fossilich locality at anta


29/83

FOSSILS AN STRATA 1 ( 1 98)

Fig 7 Mangroves along he CongubaRver norh of Socorro

Luia, south of Estncia, cited b White (887), appaentlno longe eists Man localities ae accessible onl duingpat of the ea, because of the vegetation o seasonal plantation The latte aects paticulal outcops in suga caneplantations

The pincipal coasta highwa BR uns though theCetaceous belt Towns and villages ae connected b goodtaed o untaed oads and the netwok of mino oads iswell developed (cf Appendix 3 Duing the wet season(usuall Maul), some of the smae oads ae negotia-

ble onl b fouwheeldive vehices These sma oads otacks lead to plantations and fams o seve imestonequaies and oil wells A consideable numbe of seti ons aeloated along o nea the oads; few equie etensive walk

Fig 8 Ourop areas (shaded) for he CenomananConacan

Conguba Formaon n Sergpe exclusve of he Esnca area(cf Fg 41 ) For loca on see Fg A = Aracaju C = Carmpols D = Dvna asora GM = General Maynard = Iaporanga [dAjuda J = Japarauba L = Laranjeras M = MarumR = Rachuelo RC = Rosro [ do Caee S = [Nossa S enhora do

Fielwork an methos 7

ing ome ofth e moe isolated sections can b e eached moeeasil b boat, fo eample the "cassial apucai qua(apucai ) on the egipe Rive

Method

ince the macofossil sucessn of the CenomanianConiacian of egipe was agel unknown, m eldwokaimed at obtaining deteminable and biostatigaphica

useful macoossils fom as man statigaphical leves andas lage a geogaphical aea as possible The elative abundane, mode of occuene, pesevation, etc , of the macofossils wee eoded togethe with onventiona eld notes

Socorro SA = Sano Amaro [das Broas SC = So Crsvo

Only majo r roads (from Appen dx ) are shon Grd ndcae sgeologcal map shees of Rcher & Smes (197) for code numbers addonal opographcal deals names and locales sudedsee Appendx (Ourop areas from Rcher & Smes 197 andeld observaons 1971197 and 1977 )


30/83

Peter Bengtson enomanan- onacan of Sergpe

on the localities Data which identify the localities fo subse-quent wokes ae included in the locality desciptions (Ap-pendi l ) Lithological samples wee taken fom each cali ty fo micofossil micofacies petogaphical and geochemical analyses

Biostatigaphical wok in the Segipe Basin is hampeedby he li mited la teal and vet ical e tent of most epos uesthe latte usually less than a mete Statigaphically ove-lapping sections ae etemely ae so that it is dicult toestablish composite sections Consideable local vaiation in

stike and dip and smallscae folds and faults ( see pp 3 3 3)esult in patchy epose of th e dieent statigaphicalleves with some levels copping out in only a single aeaU nfotunat ely bedding planes ae not always available foeliable stike and dip measuements so thee ae manysections which ae impossible to elate in statigaphicalode

FOS SI LS AN STRATA 1 ( 983 )

Fg 9 Rock ders on hllsde (foregrond Boa Sore 7 Tuonan 1 Veo he norhes over he sarmll Boa

Sore h aaana monan eyond

The thickness of the Cotinguiba Fomation aveages 00m but locally eaches well ove 000 m ( Bandeia 978 3 ) The highe gue efes to onshoe pats of the basin and isevident fom eld elationships in the main outop aea(povided thee is no signicant epetition of sata; se e pp33) Allowing a maimum of00 m fo the Cenomaniansequence that leaves at least 600 m ofTuonianConiacian ith 600 m of sedim ents and 0 ammonit e zones fo theTuonianConiacian (Hancock Kennedy 98 :44 , theaveage thickness pe zone will be in the ange of 60 m It is

theefoe unlikely that an individual section will containsignicant faunal changes and even in the thickest sectionsinvestigated quaies of up to some 0 m the sameammonites geneally continue thoughout Despite the lagenumbe of sections collected many statigaphically impotant fossils wee found at only one o a few localitie s This i sespecially so fo the Cenomanian (ecluding the uppe most

Fg 1 Secon hrogh ppermos mereof bedrock and sol a Cmbe 7 Cnomanan 4 lsrang srcal eaherngno rock ders as a res l of percolangmeeorc aer


31/83

FOSSLS AND STRATA 12 (198)

Fg 11 Manual q uarryng echnque offer deal condon for macrofol colleng Mave Laranjera lme onea Taboca 2 Concn 1

pat of the stage) but applies also to the Tuonian andConiacian, and i s a seious obstacle to ecient intabasinalcoelation The poblem equies continued and wide systemati collecting

By contast to the TuonianConiacian, the Cenomanianis epesented by a compaatively thin sequence with nueous gaps The limited thicknesses make the biostatigaphy of this pat of the sequence moe easy to nvestigate,although thee ae othe poblm

Documents

43 Bengtson 1983 - Fossils and Strata (Low Res.)