Embed Size (px)
Citation preview
U.S DEPARTMENT OF THE INTERIOR U.S. GEOLOGICAL SURVEY
BENTHIC FORAMINIFERAL CENSUS DATA FROM BOXCORES COLLECTED ON ARCTIC OCEAN SECTION
(AOS) CRUISE OF THE USCGC POLAR SEA (1994)
Lisa E. Osterman U.S Geological Survey, Reston VA 20192
Open-File Report 98-597
This report is preliminary and has not been reviewed for conformity with U.S. Geological Survey editorial standards.
BENTHIC FORAMINIFERAL CENSUS DATA FROM BOX CORES COLLECTED ON ARCTIC OCEAN SECTION (AOS) CRUISE OF THE
USCGC POLAR SEA (1994)
Lisa E. Osterman
U.S. Geological Survey, MS 955, National Center, Reston VA 20192
INTRODUCTION
During the summer of 1994, two ice breakers (USCGC Polar Sea and CCGS Louis S. St. Laurenf) crossed the central Arctic Ocean to investigate the role of the Arctic Ocean in global change. During this cruise, known as the Arctic Ocean Section (AOS) (Aagaard, and
others, 1996, Wheeler, 1997), 18 box cores were collected. This report contains the benthic foraminiferal census data from nine box cores (Table 1). Additional data from some of these box cores, including stable isotope data and AMS 14C dates, are presented in Poore and others (in press).
Table 1 - Latitude, longitude, water depth and location name of box cores studied in this report.
Box core no.
Latitude Longitude Water depth (m)
Location name
94-B8 78°07.68' N 176°44.67' W 1,031
94-B16 80°20.33' N 178°42.71' W 1,533
94-B17 81°15.91' N 178°58.05' E 2,217
94-B19 82°26.80' N 175°45.50' E 2,400
94-B20 83°10.20' N 174°06.36' E 3,110
94-B28 88°52.40' N 140°10.80' E 1,990
94-B30 88°59.97' N 137°29.70' E 3,930
94-B31 89°58.85' N 40°30.39' E 4,180
94-B32 85°43.04' N 37°44.52' E 3,450
Mendeleyev Ridge
Mendeleyev Ridge
Mendeleyev Slope
Mendeleyev Slope
Makarov Basin
Lomonosov Ridge
Eurasian Basin/Amundsen Basin
Eurasian Basin/Amundsen Basin
Eurasian Basin/Gakkel Ridge
Figure 1. Location map of box cores covered in this report.
1994 Individual box core sites:
METHODSSediment sampling and processing
Mark II box cores (40 x 40 x 60 cm) were collected along a transect from the Chukchi Sea to the Nansen Basin (Fig. 1). After recovery, each box core was subsampled by inserting several 10 cm diameter plastic core liner tubes into the box cores. In the foraminiferal laboratory of the USGS, the plastic tubes were split into archive and working halves and sampled at 1 cm intervals.
The sediment samples were oven dried at < 50° C then weighed to determine the dry sediment weight. The samples were soaked with a dilute calgon solution and agitated for one hour to assist in disagregation, then wet sieved at 63 um. The washed residue was oven dried at < 50° C, then dry sieved at 125 um and 2000 um. Each size fraction was weighed and placed into three labeled vials.
Benthic foraminifers were hand picked from the size fraction of >125um. In foraminifer-rich samples a representative subsample of approximately 300 specimens was obtained with a microsplitter. However, in most samples the entire fraction of > 125pm was examined for foraminifers. The benthic foraminifers were placed on standard 60 square micropaleontological slide then sorted by species and glued. Identification of the benthic foraminifer species was made using standard literature. The taxonomy of Loeblich and Tappan (1988, 1994) was followed. Additional information about the benthic foraminiferal taxonomy is reported in Osterman and others (in press). A taxonomic list of species is presented in Appendix I.
RESULTS
The benthic foraminifer census data for six box cores B-8, B-16, B-17, B-19, B- 20, B-28, B-32 are presented in Tables 2 through 8. The two additional box cores, 94-B-30 and 94-B-31, were barren of foraminifers. However, foraminifers were recovered in the surface sediment samples at these two locations (Osterman
and others, in press). Tables 2 through 8 also record the dry weight of sample and the split of sample, if any, examined for foraminifera. The actual counts of benthic foraminifera that were identified in each box core are recorded. If a species name is not listed it was not identified in the particular box core.
ACKNOWLEDGMENTS
Thanks to Angela Adams, Kate Pavich, and Anne Rogers, who provided laboratory assistance in processing
samples and separating foraminifers from the washed residues.
REFERENCES CITED
Aagaard, K., Barrie, L.A., Carmack, E.G., Garrity, C., Jones, E.P., Lubin, D., Macdonald, R.W., Swift, J.H., Tucker, W.B., Wheeler, P.A., and Whritner, R.H., 1996, U.S., Canadian Researchers Explore Arctic Ocean: EOS, v. 77, n.22, pp. 209-213.
Loeblich, A. R. Jr., and Tappan, H., 1988, Foraminiferal genera and their classification: Van Nostrand Reinhold, New York, 970 p, 847 plates.
Loeblich, A. R. Jr., and Tappan, H., 1994, Foraminifer of the Sahul Shelf and Timor Sea: Cushman Foundation for Foraminiferal research, spec, pub., n.31, 661 p.
Appendix I
Osterman, L.E., Poore, R.Z., and Foley, K.M., in press, Distribution of benthic foraminifers (>125um) in the surface sediments of the Arctic Ocean: U.S. Geological Survey Bulletin B-2164
Poore, R.Z., Ostermann, D.R., andMcGeehin, J. (in press), Stable Isotope data and AMS 14C dates from Arctic Ocean Section 1994 core top samples and box cores samples from the Mendeleyev Ridge: U.S. Geological Survey Open File 98-598.
Wheeler, P. A., 1997, Preface: the 1994 Arctic Ocean Section: Deep Sea Research II, v. 44, n. 8, pp. 1483-1485.
TAXONOMIC LIST OF FORAMINIFERAL SPECIES
Astacolus sp. is an unidentified species of this genera
Bolivina arctic Herman
Buccella arctica Voloshinova, can be included in Buccella spp.
Buccella frigida (Cushman) = Pulvinulinafrigida Cushman
Buccella oregonensis (Cushman, Stewart and Stewart)= Eponides mansfieldi Cushman var. oregonensis Cushman, Stewart and Stewart. Rare species included in Buccella spp.
Bulimina aculeata d'Orbigny
Cassidulina reniforme (N0rvang) = Cassidulina crassa d1 Orbigny var. reinforme N0rvang
Cassidulina teretis Tappan
Cornuspira involvens (Reuss) = Operculina involvens, Reuss
Dentalina spp. includes Dentalina frobisherensis Loeblich and Tappan and Dentalina pauperata d' Orbigny
Elphidium albiumbilicatum (Weiss)= Nonion pauciloculum albiumbilicatum Weiss
Elphidium excavatum (Terquem) = Polystomella excavata Terquem
Elphidium subarcticum Cushman
Epistominella arctica Green
Fontbotia \vitellerstotfi (Schwager) = Anomalina \vuellerstorfi Schwager
Glandulina laevigata (d'Orbigny) = Nodosaria laevigata d1 Orbigny
Glomospira gordialis (Jones and Parker) = Trochammina squamata var. gourdialis Jones and Parker
Gyroidina sp. is an unidentified species
Haynesina germanica (Ehrenberg) = Nonionina germanica Ehrenberg
loanella tumidula(Brady) - Truncatulina tumidula Brady
Laminononion stellatum (Cushman and Edwards) = Astrononion stellatum Cushman and Edwards
Lobatula lobatula (Walker and Jacob) = Nautilus lobatulus Walker and Jacob
Marginulinopsis sp. Is an unidentified species
Melonis barleeanus (Williamson) = Nonionina barleeana Williamson
Miliolinella subrotunda (Montague) = Vermiculum subrotundum Montague
Nodosariids includes a variety of uniocular forms.
Nonionella sp. is an unidentified species
Oridorsalis umbonatus (Reuss) = Rotalina umbonatus Reuss
Other calcareous benthics includes rare, unidentified or reworked calcareous specimens.
Patellina corrugata Williamson
Portatrochammina bipolaris (Brady) = Haplophramium nanum Brady, included in Agglutinated forms
Pullina bulloides (d'Orbigny)
Pyrgo murrhina (Schwager) = Biloculina murrhina Schwager
Pyrgo williamsoni (Silvestri) = Biloculina williamsoni Silvestri
Pyrgoella sphaera (d'Orbigny) = Biloculina sphaera d'Orbigny
Quinqueloculina arctica Cushman
Quinqueloculina seminula (Linne)= Serpula seminulum Linne
Quinqueloculina sp. #, Lagoe
Quinqueloculina stalkeri Loeblich and Tappan
Recurvoides scitulus (Brady) = Haplophramium scitulum Brady, included in agglutinated forms
Reophax nodulosus Brady, included in agglutinated forms
Robertinoides charlottensis (Cushman) = Cassidulina charlottensis Cushman
Rosalina sp. an unidentified form of the genus
Stainforthia concava Hoglund
Stetsonia horvathi Green
Triloculina frigida Lagoe
Triloculinella tegminis (Loeblich and Tappan) =Scutuloris tegminis Loeblich and Tappan,
Valvulineria arctica Green
co co co co co co co co ro ro ro ro ro ro^ro! ro vicncn4kcoro o<DCD-vicnicn4kiCoroCOCOCOCOCOCOCOCO. CO
1 i ; ~*i. i
ro co cn to. cni o>1
roCO
ro roCO- -si
'
ro cn
ro cn
1 cni oo! cni co: co: cnco! H1 b co1 bo: cn! _»| r^i roi co1 iu bi co cn CD co1 co ro. ; cni roi co> . cn coi ro
ro cn
cn
ro-j00
cn
CO
-j00
_*
J
cn
ro
-g
roCO
rol- colcn
coicn
roCO
CO
CO-j
-
CO
00 CO
_*
ro
o>
^,
COcn
ro cn
cn
CO
CO
cn
COcn
ro00
CO
roj-viico«*Jl -*Ji (£
C0|-g
-cn
cn
_»
ro
CO
cn
CO
cn4k;--
4k 4k
cn cn
-.
ro
CO
_»
o ro
ro
-g
-
-iro
roiro iro
-! -
CO
CO4k
-J
-
-
ro
4kro
CO
00 CO
CO
4k
cn
ro00
-
cn co! co co oo; cn i co
co ' ro ' i ro cn cn co cni roi coco'ro 'CO 00 -J
i
si CO' 4kco cn 4k ro ro
ro
4k' ro' o ro coCO 4k -J
co| co4k|4k
-
-g
o
CO
CO
-
___k. t.
cn, co
cn cn
CO
00
o
CD
_4
COro
-g
.y, .
ro
o o
-cn
ro ro
_*
CO
roo
-
roo
cn
4k CO
CO
cn
4k O
cno-
cn
COro
CO 00
cn
cn
4k O
-
cn
CO
CO
ro
CO
-
00
CO
cn00
ro
-t
_i
ro cn
cn
CO
ro cn
cn
-j
_* roCO
-
o
-
ro
ro
-
ro' ro. -J1 00 -j, cn co oo ro co ro o ro
ro4k
O
roCO
oicn co'-j cn
CO 00
ro0
cn
-
o
4k
cn
o
CO
-
CO
4k
0o
COro
CO
^
cn
roCO
cn
_
4k
_»
roico
o o
cn
4k
CO
cn
ro4k
ro.ro oroi ro
4k
O CO
o o
ro
4k cn
ro-
ro
cn
ro-g
CO
COo-g-
cn
-.
4k
-
ro
CO
-g
^ .
rocol oo -jicn cn!4kicoroo
^b_ 4k|cn
CO
4k COcnl roi cn
cno
-
COro
cn
-
^
CO
L 4k CO
00
-
-
ro
-j
ro
-
cniroen'-j00 CO
cno
COro
-.
-
CO
ro
ro4k
ro
cn00
-
o-
CO
cn
cn
-
COroo
o0
CO
-A
CO
CO
-
cn
-
_i
COro
CO
CO
CO
-J
4k
CO
oloOIO
-g
CO
ro
-g
CO
4k
cn
4k
o>
roo
_»
ro
CO
-
^b
_*
cn cn
cn cn
roi 4kcn o>
0o
to
cn
4k
cn
_»
4k
CO 00
CO
o o
ro
-j o>
-
cn
-
cn
ro
COro
-
ro-
CO
CO
4k
cn00
cno
-
CO
-
--
cn
ro
CO
ro
CO CO
-g
-.
-
CO
cn
CO
CO
ro
kilo-JICO
CO CO
CO
cn -j
-
ro
ro4k
cn
ro O
ro
cn
-
-j
cn
I cnl co-
ro coico -J o cnCO' -si -J
ro cn
CO
CO
-L
ro
-
CO
-
-J
4k
COcn
m^>
^
rom^>
ro
CO
CO
cn-
-
CO
CO 00
ro
si
ro
-
CO
roCO
cn
00cn
^b o>
ro
4k
-
ro
o
CO
cn
ro cn
4k
vl4k
-.
-.
_i
ro
ro
4k
roCO
cn
cn
m^>
-
-
-
00
CO
4k
si
CO
cnCD b -J O>
ro cn
-
cnCO
-g
CO
cn
COo
00
-
ro
cnloiro
cn
-J
roi co oo cnO'-J
__t
CO
ro
cn
o
CO CO CO O CD, CO
CO
ro
o o
ro
^
ro-
CO
cn
cn
-gCO
-
CO
ro
-
cn
-g
ro
roCO-j
cn-j
cn4k 4k
CO
CO
4k -J
-.
_k
4k
ro-j
CO
o
ro
ro^b
-
cn cn
4k
cn
CO
o a:CD; CD
CO
-k
CO CD
-.
-
ro-
cn
ro
4k
COo
cn-
-
ro-
-jlo
o 4k
CO
-t
4k CO
ro
ro
-
ro ro
-
COro
00
roCO
-
ro
CO
4k
cn
roCO
^
roo"*
id o>bP'ik cni colcn
CO
roCO
CO
-
ro
CO
CO
_t
4k O
4k
cn ro
-j
-
-t
rol-
-j
_i
-
o
cn
(Ol (OJ O. CO
1 co roCO COcn co
CO
_t
ro4k
ro
ro
_*
Co
ro-g
cn
o 00
00
-.
-j
-j
CO
-L
ro
00-j
_>
ro
^
-.
CO
-
roCO
CO CO
cn
o o-t
roo_*
4k
-
CD
4k
cn4k
U
ro
ro00
ro
-
ro
cn-
4k
COo
cn
o
ro
-
ro-
CD
4k
Depth In box core (cm)
Total sample weight (g)
Percent of sample examinedBollvlna erctlceBuccelle frlgldaBullmlne aculeetaCassldullna renlfomo
Cassldullna teretlsComusplra InvolvensDentallna spp.Elphldlum alblumblleticumElphldlum excevatumElphldlum subarctlcumEplstomlnelle arctlcaFontbotla wuellerstorflHaynoalne germanlca
Gyroldlna sp.
loenelle tumlduleLamlnononlon stellatumLobatula lobatulaMarglnullnopsls sp.
Mlllollnella subrotunda
Nodosarllds
Oridorsalls umbonatusPatelllne corrugatePyrgoella sphaera
Qulnquelocullne erctlceQulnqulocullna sp. BQulnquelocullne etelkeriRobertlnoldee charlottenslsStelnforthle conceveStetsonle horvathl
Trilocullna frlglda
Trllocullnella tegmlnls
coi cn j Velvullnerle erctlce
co cn co-J 0 4k CO' 4k
other calc. benthic
co co'Total calcareous benthic CT ro foraminlfera
10CDCD
O*
5'3s s.oCD
to toQ.
i
CD 00
'.Depth in boxcore (cm)
-».-----*-»-.. -~^^^^ . . . . :":" P <° f° » 1° P - P.io ioencnroco^io^bco^co bo Total sample weight (g)
ooooN>cn"cncnen ro P'? ?*» ro ^ ro!en: S o o o o o o o o o o o " ro ro ro ro ro » Percent of sample examined ooooenoenoooenooenoooo. en. en. enioioo. o;oo. ooooooocoenenenen. enioo;
\Astacolus sp.
IBolivina arctica
' _\Buccella frigida
i i i i i i ._»._*., -n _*i ro | I Cassidulina reniforme
-*-» 10 INJ. -*..-*.-» INJ. -»-» '' '-» x». o -*, co: x>. ro. en co ro o -* ' ro en en co- -« -» ->> i -» ' -« N> co en ro ^ xt 1 o <o ^ ro co< co: o> co <o ro co xti o CD CD xt' roi xt co, to <o< coi en: oo, «j, cn: «>j: o, -*i eni o, <
Cassidulina teretis
' \Cornuspirainvolv0ns *' CO' *
i ! ! ! ' ' i II CO, i _»,_». _»| CO ! ^^ Dentalina spp.
-t; , -t, co -» -*i co -»'-*; co. -»i Xk. co .-» ->> ->> COi O>! X^i N) Elphidium spp.o> 2 O OCD CD
o'
0> o* n
COI
CD
co *. ro- ->j ro co co co x>. tn N> -'i co ro. -^ Eplstominella arctica
co co x^ to en x^ x^ - . ->. en co x^ co en en en ro: co co >->> > ro -> . co co co o; <O' ^i en «>] to. co o> o> en. en co; co: 00' r<O! o ro en> «j.
->> ro< ->>i ro: x^i o>i o>' o . ->.; en< x^i x^l CD ->j! rot ->>! ->j; o
Fontbotia wuellerstorfi
co co ro o>: x^i ro roi ? >j= ro| Gyroldina sp.
oo CD x^ ro ^i,._».-» _»: _: -»' ro ro co. x^ ro co> -«. -» : -»: en. .u. -*, -» ->., en ! <o> eni to, en o ^i ro ro 1 «>i en; to en ro: en. o. cni coi oi Oi co-
__MJJJ_*J: en! oo' -*: en: o: CD: ro| oo
loanella tumidula
en; en N> >>i to to en'ro -&, en; en' col ro, |co'Lobatula lobatula
co1 ro en co ro' to! o>i o> ->j XM eni ->j. x». to co N> en ->., N> ->.i ro to GDI x^i eni x^i co, co> ->j' en' ->j, o; oo ro-" roi roi ro; co 1 co *.! *.: en! co en. ro x^i oo oiroieo Milionella subrotunda
co ^j co co -fr roi ro| ep coL
ro ro 1 -vi -vii ro x^ en; xt. en col eni coi co. ->. co co. ; roi xt, _>.; CDjNodosarlids
en| coi co! xj col ooI I i I i I ill' I ' ' ' , _» -». ro'-» ro' . ' _»!_»,_»,_» _» _* -» ro! _»! _» < _» ,_» i
en co en to o CD' eni Co; o| co: o -*> oo. co: co: ro: Oi x^, ro co: to, en co, co: en, en co co xt en, co, ro. -NT ->., -> ! «>ii x^ 1 en o -~J; x^i ro; xv o: -fc., x^, x^, co co, co
eni coi eni ->ji ->ji co. x^| 01 co coi en oi en, ro: to co: 01 eni eni -^
Orldorsalls umbonatus
coi -»i co' *j en1 co CO' -» co -*' __roi x^ co< -> -M coi co| en: x». enPatellina corrugate
Pyrgo murrhina
co ro ro ro -».iro -». co co _»co pyy° wllliamsonl
_». -i., _»| co! ro' ' -*: 1 -* I ' !JJ ' Robertinoidescharlottensis ».. t. t, co: cn| ro1 ^Ji x^
i ' ' ;_t i ' ; ; i | ! i ^ , _* Quinquloculina arcticaro i coi en: en, x>. x^| i ro co -vii *. x^; co en 1 -vi o en ro< co. x^. ->.; CD xv x^! ro1 to o to, ro
:ro i^i co, co; 1 ' I iro ' _»_» Quinquloculina sp. B
i ! ', Stain forthia concava
^i | Stetsonia horvathi
1 : ' I ' ' I -»-*-»-» I x^ ro co . ro N), co ^j *j en o o <o o. o en, ro: 00' *j, en vj> ro o en *J CD Xk -» en, to o co o o co CD to co *j en Xk to o en- -»l
\Trttoculina frigida
_\ Triloculinella tegminis
encocDODrorocococoo^ienxktoencocoenI Valvulineria arctica
iro->>cnO)enen,
_^rororo->-^-^ -^cocococococococo Total calcareous benthiccoro f oraminifere
_^ Glomospira gordialis
agglutinated non-id
Table 4 Benthic foraminifer census data 94-B17
SUMO* pe)BU|)n|66vCMCO*~
CM, CO CO
3|i4iueq '0|BO jeqjoBOIIOJB BueuunAiB A
BpiBMBunnooiuj.
HJtBAJOil B/UO8J0JS
BABOUOO B/IVIIO/U/RIS8/8u0jjOfVBip sepiouiueqoy
g-ds auiinooinbuinoBOIIOJB BUfinooianbuino
jUOSUIBIIHM oBjAj
Bumjuntu oBjAjsniBUoquin SHBSJOPIJQ
sp|O|||||/\| J8i4)o ds B//0uo/u<w
8P||JB80PON
0ot//uo*/crri& &//ou//o//i^v
0iff jocfOf 0/nj0cro*TB/np/u/nj BiiouBoi
'dS BUIPIOAJ*)
BlBBfABBj BUJinpUBIQ
BoiuBuu0B BUfseuAeHIfjotSJeiienM aitoqjuoj
BOIIOJB B//8U/tl/OJ8/d,g
uinoitojsqns uin/p/i/ofeuiniBABoxe u/n/p/i/do
dds BUHBIUOQ8/I8J8J BUIinplSSBO
ewjofiuu Buiinpissao dds suooong
BOIfOJB BUIAflOg
ds sniooBjsvpaU|UlBX8 8|dlUB8 JO }U80J8<J
(6) iu;6|eM eiduiBS |B)OI
(UIO) 8JOD XOq U| MldSQ
CO
*-
CO CO
CO
(O
oCM
r«- r«*
CM
^
*-*-
oin
(0en
6
oT-
T-
"*
*-
in
CMr«-
^t
inCM CO
*-
CO
T-
*-*-
oin
(0 CO
en
CM
in
CO
*~
*-
^t
^t
^t
CM
CO
O CO
^t
in r«-
o inCO
oT-
O
CO
T
T-
^t
O)
in(O
enCM
T-
en r«-
(O
*-
oin
coicno
CO
CM
-
TCO
COoCO
(0
r*'
*-
COo
**
(0 CO
^tCM
*-oT-
in
*-*-
*-
CO
CM
O)
in'4
roCO
CM
"*
CM
*-
*-
"*
(O**
in
T-
r«-CO
CO
CM
oin
CO IT-
CO
CO
CM
»
COin
T-
CM
^
' "
»-
en en
CO
CM
inr«*
CM
«t(0 CM
*~
CM
^tin
CO
(0
in
*~
CMr*
CM
"*
'-
^~
0o
r* co ICM
2
CO'in
r*.CO
5!
CO!r»-
(0^rCO
(O
*-
COo
in
inCM
oCO
*~
CO (0
»-
in r*
CO
CM
?ICO
CM
OenCO
*~
(O
m
^t
CO
enCO
N.
O O
r«*
CM
O
en
o
in enCM
in
*~
CO
CO
(O CO
CO
^t
CM
o o
r*o
-
o
r«*.cM
r*CO CM
en
*~
CM
^~
(0
T
O CO
CM
CM
*-
CO(0
^tr*
cvj I T-
CM
CO
CM
*~
O
Tt
in
in
CM
»-
*
o o
enCM CM
CM'CO
ICM CO
in
*~
CM
*-
CM CM
(O
OT-
T-
Oo
CO
CO
Tt
CO
in
CM
COin
^tCM
O
in
*~
'-
o o
CM
CMT-
u>
T- 'CM ico l^
CM CO
*-
T-
^t
in
CO
(O
*~
"
^t0)
T-
T̂-
(0
in
*-
o o
(0
»-
o^t
(0 CM
CM
-
CM
»-
O O
r*^t
r*
(0
(Olr«*
O)
»"
o
CM CO
en
in
*-
*-
<M
OO
in(O
CO
r*
*00
o
CO
CM CM
CO
CM
0 O
T-
00
en
2
Ol (0
CO
inCM
r«-^t
inin
in
CO
o o
CO
CO
oCM
en
T~
CM O
in
CM
»"
oin
CO
T̂
**
^t
CM
inCM
O
*~
»
"
CO
^t ^t
oCO
en
CO CM
' "
*-
ooOlO
COr*
CM
oCM
(O
T-*
CM ^f «' CM '^t :CO I CO|COi(O
I
^
en
CM
^
in
CM
(0 CO
T
CO (O
»-
inCM
CM
(0
*~
»
CO
oin
CMr^iih
FFCMICOCM ICM
r»*
CO
^t
"
^t(0
CO
CO (0
enCM
*
CO(0
*
CM
Oin
CO
(0
CO
r*
CO
CO
CO CO
T
*-
CM
O CO
'-
^t OT-
CM
O
^
^t
CM
O O
T-
cvjim
CM
T- 'CM ICO CM'CMiCM
CM
CO CO CO
' "
r«*
CM
(0in
CM
T~
en^t
in
inin
"*
CO
CM
Oin
T-
coT-
(O CM
*enCM
*~
CM
*~
CM
in
CM
O^t
(0
T-
^t
CO CO
in *
CO
^
*
oin
CM
CM
r*CM
*-
n T- (0 O
o ^r en* CO CM
*~
^
in
CM
*~
CO
^t en
CM
OT-
CO CO
in
in r««.
CM
o
CM
*-
CM
oin
CM
CO ICM
"*
CO
in
CO
T-
in
(O
enCO
(0in
0
*~
^
T-
CO
oin
CO
o
en,CM
in
(O
r*
"*
CM
Oin
in
(0
** CO
in(0
T-
»
»
CM
T-
Oin
(O
CO
T-
^t
in
"
CO(O
in
(0
CO CO
^t en
CM
*-
T-
o in
CO'00 O 00 COlCO
"*
en
CO
»-
(0
CM
in
CO CM
*
in en
T-
oin
CO
^r
CM
COT
CM
CO
CO
(O CM
*~
CO
CM
Oin
in oCO
CO
^t
CM
CO
r*(O
^t
CM
CM CM
CO
en
T-
*-
»-
»
linICM
I 3D CO CO
co co in
I;CM T-
co
*~
» *~
*-
CO
C0|-«toir*CM ICM
CM
*-
oCM
(0
*~
T~
CO
CO
00!f-cn.r«*
*
»
in inCM CM
en ICM ICM ico ICM CM r-.
O) IO) 00 iO) IT- JT- -T-
oCO coCM
COcoWCOiCO
in (o CO CO
in
*~
COT-
^
»-CO CM
^t
in en
*~
T-
T-
*-
"
Oin
uj
r^CO
^t :in ico r^. co icn io IT- eg ico '-^ in cbCM ICM ICM 'CM CM CM iCO CO 'CO 'CO CO CO CO
cococococococoro cDcn.ucoro-tocoIO CO CO CO CO CO CO CO >icDcn.ucoro-to
-» -* -si -si -U -k
-k _k ro co co CD -» ro -u co ro oo
pCD ->1
ro ro ro00 >) O5
ro ro roCO 00 ->1
ro -k ->i o cn->i ro CDOD CD CD
ooooooooooo o o o o o o o o o o o
rocnroCD
roroCD
cn0
ro-urocn
cn O
roCO
ro
COCD
cn o
ro ro ro -»ro ro co ro
00 O
OD COOD.ro
rocn CO
ro0
ro
.u
cn
CO
ro0
00-uCO
CO
00
CO
CO
cn
CO
^00
-cn
O5
-
CO
cn ro
coicn
cn
O5
o
^1
rocn
.u
cn
rojk.00
CO
' i _k _k
I,;:-
_k _k
'_!
]
>ro -k_k OO -
u CD cn
'
-k o cn
_k i_k
U ->i cn o>CO CO O CO
i I
i
.
i !
I
i
_t
cn .u
ro
^
ro->i
^
1CO -k
^
i
i i
roiro ro -i
O5
-« ro
.
_,,
cn
_»
^
_i
_
O5cn
ro
^
CO Ul.OD o
_i
^
.
0 ro
_
1
CO
^
_i
jklro ooiro
1
'_»
ro ro .
(O
oCO
CO
1
.
ro oo
ro
CD
ro0
^
ro
ro
CDiCOcoicn
ooven roiro
.
CO-u
^00
ro
05
cn
jk. o>
^
CO
co ro -k o _^
.u co ro -k
to -k.-k -k o->i co ->i o cn roiro'ro co ro
rocn
o o o o 0:0 o o
i ^_k
cn cn
^
roCO
_k _k _k ro
OB ->i CD cn jx co ro -noco oo ->i CD cn,jk co ro ->.
-» co ro o -k -k o CD OO
° t 2 £'- : w a " 2
0 0 O 0o o o o
1 i
,
jk ro ro -*
i \ '. _k ,_k
_i
i _^
iro
_k i _k;
cn ->i
CO
^(O
1
CO CO
-k co roiroiroi jk
ro o
ro ro ro tk'-vcnCOiODICO
_k,_k
i
_k
CO
1
: ' ;
^
.
:cn
.
_k ro co
CO
CO
4k, CO
rocnCO
cn
O5
oo
oo
CO
CO CO
ro0
-U
ro ro
^
_k
_^
ro ro
ro
->j Jk
CO ' - -* *
^ _» _k
_i
cnicn .u. cni->j00 > -> 1 CO ! CO [ >)
rolcoiro
CO*.
cn
^
COCO
CO
^J -vl
05 00
-klCO'^J O .U -k
roi jk.
ro
ro0
ro
ro ro
,
Depth in box core (cm)
Total sample weight (g)
i 1cn; co co co ro' Percent of sample examinedOiOD CD.ODItn 1
_1
- -'ro
_i
.
i
co'i^ oo ro
,_k
ro.-k.-kJk' OO OO jk
1
coio
cn
.tkCO
1
O5 00
',_,_
\
ro
cn u
OOi O5: Cn O5
-u.ro 1 ro -«.
*. ro'ro cn o to
CO -»
CO cniro'os
ro cn
cn
1
i
1
'->! CD
_i
CO
^
ro
. _* :cn -* ' |
ro
CO
CO
ro
CO
CO
CO O5
-*;cn co -
co.co cn -* cn
CO
ro
CO
->iCD
05
ro ro
00cn
ro
rocnCD
cn
CO 0
ro
'_»
i
-U ->l,.(k -k
i
ro
Astacolus sp.
Bolivina arctica
_k 1 Buccella frigida
ro , J Cassidulina reniforme
_i
ico>-^<ro
ro
jk
ro
cn
cn-
CO
-
ro
^
_k CO ro
ro
CO CD CO
-k ->1
ro
^
^
ro -u.
COo
^
Jklcn
00
_^
CO
cn
ro
CO
ro -*.*^ *^ i ^* 00 ^*
CO
_l
00
1
roCO
CO
cn
O 00
_l
roCO
05
ro
^
ro o
05 0
0
roCO
cn
^
CO
Cassidulina teretis
Dentalina spp.
Elphidium excavatum
Elphidium subarcticum
Epistominella arctica
Fontbotia wuellerstorfi
Haynesina germanica
loanella tumidula
Melonis barleeanus
Miliolinella subrotunda
Nodosarilds
Oridorsalis umbonatus
Pyrgo williamsoni
Pyrgo murrhina
Pyrgoella sphaera
Quinqueloculina arctica
Quinqueloculina sp. B
Quinqueloculina seminula
Robertinoides charlottensis
Stainforthia concava
Stetsonia horvathi
ro Triloculina frigida
1 Triloculinella tegminis
_k _k -k Valvulineria arctica
_> _k _k _k ' ,ro , _k _. ._ ,0 other calc. benthic
-k ro _k._k '_k o -> oo co ro o co'cn co cn a>cocncoa>cnocncD.uro
CO
COCOcn
ro cnCO 0
CO CO CO Ocn cn
CO CO CO
-
CO
roCO 0
COCO CO
COcnO5
CO CO CO
COro00
ro co -kCD CO *^ CD CD^ ro ->i cn ->i
- jk ro ro co co co Total calcareous benthic cD^uicoccj^uncoro foraminifers
ro ro o co -k ro Agglutinated forms
Table 5 Benthic foraminiferal census data 94-B1 9
Table 6 Benthic foram
iniferal census data for 94-B20
^
£0
oXo.acf0) Q
0-11
-22
-3
3-4
4-5
5
-66
-77
-88
-99-1
010-111
1-1
21
2-1
31
3-1
41
4-1
51
5-1
6
16
-17
1
7-1
818-1
919-2
020-2121-2
222-2
323-2
4
24-2
525-2
626-2
727-2
8
28-2
929-3
0
30-3131-3
232-3
3
33-3
434-3
535-3
6
36-3
7
37-3
8
s*
O)
i0)
Iffl(0
18.6
311.4
12
.78
1
2.0
91
4.5
9
" 12
.74
14
.64
17.8
8.2
69.9
51
5.9
21
2.3
114.711
4.7
41
1.9
41
6.1
3
15
.52
9.2
86
.07
8.4
56
.84
9.5110
10
.88
1
2.0
51
6.4
81
2.3
81
6.1
9
14
.89
20.61 17.8
25.2
717.81
8.711
6.1
924.7
2
3.1
1
24
.22
N Percent of sample examined
«! .. . . . .. ._
25
50
50
50
10
0ibd100
10
0100
100
10
01
00
10
0100
50
10
0ioo1
00
_ 1
00
10
0100
100
25
6.2
512.5
50
10
0" 1
00
10
0
100
10
01
00
1
00
10
0100
100
?
Buccella frigida
-
-2 21
-
Cassidulina reniforme
~ 11111 -
i
Cassidulina teretis ]
Dentalina spp. '
2
._
12211
w.Elphidium excavatum54 3
2 "4
121
^ Elphidium subarcticum55 2
1111224
~ 4 "
313 1-
- Fontbotia wuellerstorfi^i26
33
2813
5111
1195" "
2 33131 1
361454
"291 1222
Glandulina laevigataroi
9JL
- 2 2 21-1
~'1
- -;-
\Haynesina germanica1
1"2
_..
-
- -1
-> loanella tumidulaO)
10
16
2
619
"2
135128692
714
38
551
20
"511148 84 2
-
-
-
I
en !
Miliolinella subrotundaCD
5132
25
85
19170
53
29
28
56
414172
142102
"12
9
4510741
-
- -
21
INodosariids0°,
69 913121151172 7 12124 34312 1
75 "1
_ 12
a,! Oridorsalis umbonatus
Ul!
65
121 272
16
5
229
5147145
1171374
12
5123
214
74
38
2752
29
27
0
181173
30
7460
26
3126
173
36 1855
437
Pyrgo murrhina
11
-
5 3
--
I
Quinqueloculina arctica-
-
3
"1-
__ _.--
Robertinoides charlottensis113
Stainforthia concava1
-
w Triloculina frigida3331 171 511332
2
-
1
ro Total calcareous benthic o foraminifers
203
25
3
38
82
84
4
56
12
61214
636
83
56
56
178
31
3258
40
4
13
5593692
32
326
20
2196
34
0546
32
3149
22369
18
59
46
10
Agglutinated forms1
-^-^-^-l'. "*i-»<oco-«go>ui.utofo-*Qenth in bOX COfG (cm)r x 7
oooooooooooo^^^oooooooooooooooooootntofofo.intnOOOOOOOOOOOOCnCntnOOOOOOOOOOOOOOOOOOOOUlCntntnOOOOO
" en en o o o Percent sample examined
Astacolus sp.
Bolivina arctica
__ Buccella frigida
Buccella sp.
Cassidulinareniforme
roroco .-*-*-* Csssiduiitis
Dentalina sp.
,,,,,, ^ ̂_»_» -* co co -*i Co, o ! to to Elphidium excavatum
Haynesina germanica
UJ<t>
coco-^ ' ' ,-^-ifofofo-' loanella tumidulaoo-*cofocn:aio*.cncocn*.
I tLobatula lobatula
g>
§CO
CO
Q.
to
oa ^ oo
- to to: co -j co en Miliolinella subrotunda ^Ji fO (O
-' -*cn-'^.co, cotoco Noaosa "as
fofocofoto-*fo-*-' cnoooicofococofofoco-'fo ^.OridorSdllS UmbonatUS
co to -» en to Patellina corrugata
Pullenia bulloides
Pyrgo williamsoni
en co 4k ~g to ^ Quinquloculina arctica
Rosalina sp.
Robertinoides charlottensis
Stainforthia concava
Stetsonia horvathi
rv> -* fv> rv> Triloculina frigida
Valvulineria arctica
_ calc. benthic non-id
Total calcareous benthicooo 'O 'CDf>ofo»g»gtncncocootn ̂
4k 4kro -» 4k CO CO CO
O CO 00 vl
4k 4k 4k 4k CO COco ro -» o co oo
CO COcn cnCO
^ o o cn ro co vicn cn 4k CO CO CO -»
cn cn ro cn vi o o o cn o cn o
ro cn
CO 4k
CO COcn cn
cn4k,
CO 00
CO COco roCO CO 4k CO
CO, CO _.
CO
ro cn
ro 4k
CO CO
CO
COro
rocn
ro cn
ocooovicncn4kco ro.-> ocooovicncn4kcoro->o
-> o co. oo vicncn4kcoro->ocooovi cn cn 4k co ro ->
-> cn cn co co vi 4k>ro!roiro o cn co ro ^ -« ro 0:0 ^ -«ro -> co -» vi co--' ro'viico.co oo 4k cn co -> co.oo-ro co ro
!
oooooooooooooocn cn cn o o o oOOOOOOOOOOOOO O.O O.O O'O O O
.
_*
ro ' i
1 ,-a. 4k * ICO I ' 1 '
i i _^
ro ^ ro cn CO ^ -> 4k
... - i ! ro
,_.
ro| ' 1
_ ro _* _*
-» cn co
CO cn ro1 u 4k
4k
l
cn
cn
cn vi vi
- iro
i
ro co 4k
i
COro
ro cn
CO CO -*
1 !< :
cn
cn
i
VIcn
- CO CO 0 vl
ro cn °°, i :
i ' i_.
_^
oo cn
CO;
;
CO 4k 4k CO lO 00
i ' icn cn1 ro en: co 4k co o, cn o co ro ro cni cn -*i 00 4k
1
1 cnlcn
4k CO
CO cn
CO
2
1
ro!ro
CO CO CO. CO-» VI
'
^
ro00
11
!
4k
CO
_^
ro cn -» 4k 4kio roiroicn
1
.
^ ro - ;
! '-»
__!
i
1
- -*! !-» Iro
_.
_.
_^
4k 0
. ' 1
CO COro cn 4k CD
ro '-»
1
rocn
Ico
i
1i
cnico ro cmro
1 cn j ' oo
|
CO
cn
ro
1
_,
co
0
.4k
Oo
00
CD
CO
cn
o o
vi cn00 vl
CO. 4k
cn -»
0 0 0 0
cn cn
4k
4k
0 0
-
CO
,_
ro
CO
fcl
1 { i iro
-
ro
cn
00 CO
i
cn
-*
4kcn
in
i
Iro ->>4k'ro>ro|cn
i
_i -*i_ _
coio ct> oo cn vj oo
cn 4kioo cn co coicniro vi coi4k cn vi'cnlcn vi 4k - .
CO
co ro
-i
iCO -* J4k . !_»
i ' ]
-» co cn
_.
o'co -si
L->irolcnio
o oloicn roi-* viicoi
1i
icn roico
! I
cn ! i
coicn
4k
_»
4k
ro
ro cn
-
ro
ro
ro
_
cn
ro
o
4k
cn
4k
cn
CO
4k
4k
00
cn cnCO. CO
ro
ro - co ro
4k cn4k 4k
1 1
vi cn cn.o
o
roCO
Depth in box core (cm)
Total sample weight (g)
Percent of sample 5 examined
Bolivina arctica
-* Buccella spp.
1Bulimina aculeata
Caaaidulina renHorme
Caasidulina teretia
CO
cn
^
cn
i
-J
4k
CO
00CD
^0
1
oioicnicni cn roi vi| -si ico ico
1 _
1
_^
o
ro
vl
1
CO
ro ro
ro co4kiCO
cn cn
ro
-
Cornuapira involvena
Dentalina spp.
cn E. albiumbilaticum
o Elphidium aubarcticum
CO ->
co
CO
_. Elphidium excavatum
Epistominella arctica
\Fontbotia wuellentorfi
co Hayneaina germanica
cn
Ql4k
ro4k vl
ro
' i
_.
ro0
cn
-
ro
-*
cn cn
00 .0
cn4k
I Glandulina laevigata
Gyroidina sp.
loanella tumidula
Laminononion etellatum
Lobatula lobatula
4k Miliolinella aubrotunda1
H Nodosariids
roCO Oridoraalia umbonatus
Patallina corrugate-. Pyrgo murrhlna
\Robertinoide8 ro: char/off enais
Stainforthia concave
-* Stetsonia horvathi
ro00 Triloculina frigida
Triloculinella tegminie
Valvulineria arctica
-* _> other calc. benthic
cn cn ro cn co 4k o co oo cn vi oo vi cn co 4k cn -»
cn o
4k CO
00
o
4k COcn oo
CO
-» ro -
ro ' -> cn4kcocncoro->-> 10 ro 4k 4k coico cn cn .u cn vi.4k oo o cn cn -> o ro -> 4k co vi cn co co oo-ro vicocovicncncncn->->coco
CO 4k _. _. _. _» _.
ro oCD
ro
4kcn
_.
_. _. ro cn oo co co cn cn
4k cn
COcnCO
cn
COco0
CO
4k COcn 4k -» o
-» CO
4k
00
Total calcareous benthic foraminifers
cn Agglutinated forms
|
Table 8 Benthic foraminifer census data for 94 B-32
