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Analisis Cekungan
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4. Pembentukan CekunganMatakuliah Pilihan Semester VII
Oleh: Bernadeta Subandini Astuti, ST, M.Eng
Density : semakin kearahatas semakin rendah
Terkait dengan pengapungan
Konsep : Airy Isostacy
Densitas : 2,8
Densitas : 3,3
Materi lalu Materi lalu
Flextural Isostacy Hypothesis
Konsep : Airy Isostacy
Dihubungkan denganrigid
: Adanya flexturalresponse (responkelenturan) menunjukkantingkat kaku yang rendah
McKenzies ModelFor Basin Formation
Materi lalu
Bisa juga dilihat di Global Tectonic - Kearey et al, 2009
Materi lalu
PANGAEA : A SUPER CONTINENT
Dasar pemikiran: Tektonik
Evidence :
The Continental
Jigsaw Puzzle
Evidence :
Fossils Match Across the Seas
Evidence :
Rocks Types and
Structures Match
Evidence :
Ancient Climate
Dasar pemikiran
HOT
SPOT
PLATE BOUNDARY : MIDOCEANIC RIDGES
IGNEOUS ACTIVITY AND SEDIMENTATION ASSOCIATED
WITH CONTINENTAL RIFTING
(Dewey and Burke, 1974)
Divergent Plate Boundaries and Oceanic Ridges
SEVEN MAJOR LITHOSPHERIC PLATES
HOT
SPOT
TECTONIC BASIN
CLASSIFICATION
FOR CONTINENTAL ( a, b, and c ),
MARGINAL AND OCEANIC BASINS
( d, e, and f )
After Dickinson and Yarborough, 1976;
Kingston et al , 1983; Mitchell and Reading, 1986
A Tectonic Basin Classification
TECTONIC BASIN
CLASSIFICATIONFOR SUBDUCTION and
COLLISION-RELATED
BASINS (REMNANT BASIN)
After Dickinson and Yarborough, 1976;
Kingston et al , 1983; Mitchell and Reading, 1986
B
TECTONIC BASIN
CLASSIFICATION
for
COLLISION-RELATED and
STRIKE-SLIPSINS/WRENCH
BASINS
After Dickinson and Yarborough, 1976;
Kingston et al , 1983; Mitchell and Reading, 1986
C
A. Divergent boundaries
B. Convergent boundaries
C. Transform boundaries
Plate Boundaries
Type of plate interaction(Indonesia)
HALL & WILSON
JOURN .OF ASIAN E SCI.2000
STTNAS YOGYAKARTA PERTAMINA DIT.HULU
Plate Movement
Tectonic setting of Southeast Asia and SundaMicroplate (Sunda Land)
Peta Cekungan Sedimentasi Indonesia
51
2
4
6
7
8
9
12
13
11
10
14
15
1618
17
19
23
24
21
22
20
2526 27
28
29
30
32
33
3436
35
37
38
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44
45
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48
49
50
58
51
52
53
55
54
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63
64
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66
31
3
M A
L A
Y S
I A
S U
M A
T R
A K A L I M A N T A N
S A R
A W A
K
S A B A HBRUNEI
M a
k a
s s
a r
S
t r
a i
t
K a r i m
a t a S t r a i t
M a l a c c a S
t r a i t
S o u t h C h i n a S e a
N a t u n a S e a
J a v a S e a
J A V A
I R I A N J A YA
SULAWESI
Simeule
Nias
Enggano
Bangka
Bel itung
Natuna
Madura
Bali Lombok
Sumbawa
Flores
Sumba
Buton
S a w u S e a
B a l i S e a F l o r e s S e a
Timor
Alor
Wetar
Tan
imba
r
T i m o r S e a
Kai
Seram
Buru
Talibu
Obi
Misool
Mangole
Banggai
HALMAHERA
Waigeo
Bacan
Morotai
S e r a m S e a
M a l u k u S e a
B a n d a S e a
H a l m a h e r a S e a
S u l a w e s i S e a
P A C I F I CO C E A N
Cendrawasih Bay
Yapen
Biak
Wakem
Kob roor
Trangan
Yos Sudarso
A r a f u r a S e a
AUSTRALIA
THAILA
ND
I N D I A N O C E A N
Anambas
Pagai
Sipura
Siberut
Tana Batu
04 S
THAILAND
INDONESIA
INDO
NESIA
MALAY
SIA
PHILIPPINES
INDONESIA
AUSTRALIA
INDONESIA
TH
AIL
AN
DM
ALA
YS
IA
MA
LA
YS
IAIN
DO
NE
SIA
PA
PU
A N
EW
GU
INE
A
IND
ON
ES
IA
96 E 100 E 104 E 108 E 112 E 116 E 120 E 124 E 128 E 132 E 136 E 140 E
SINGAPORE
Bintan
Singkep
Batam
08 S
00
04 N
08 N
12 S
16 S
PAPUA NEWGUNEA
PHILIPPINES
THAILAND
CAMBODIA
VIETNAM
Bandung
Jakarta
Lampung
Semarang
Yog y akar ta
Surabay a
Denpasar Mat aram
Dili
Kupang
Ujungpandang
144 E
Palembang
Bengkulu
Jambi
Padang
Pekanbaru
KualalumpurMed an
Banda Aceh
Pontianak
Banjarmasin
Brunei Darusalam
Kucing
Palangkaray a
Samarinda
Palu
Kendari
Man ado
Ambon
Jayapura
Man ila
Pnom Pene
Ho Chiminth
Bangkok
Mindanao
PalawanNegros
Samar
Panay
Mindoro
AUSTRALIA0 500
KILOMETERS
12 N
Pasuruhan
Sandakan
Plaju
Lhokseumawe
Cirebon
Laut
Mahakam
Total
Sakakemang
Block
Toba Lake
INDONESIA BASINSINTRACRATONIC
PASSIVE MARGIN
ABORTED RIFT
PULL-APART
TRANSFORM MARGIN
OCEANIC TRENCH*
FOREARC
INTRA-ARC
BACK-ARC
SUSPENDED
ISLAND ARC
OCEANIC AND
REMNANT OCEANIC
FORELAND
THRUST FOLD BELT
SUTURE
FOREDEEP
PLATFORM
1 NORTH SUMATRA2 CENTRAL SUMATRA3 OMBILIN4 SOUTH SUMATRA5 MEULABOH6 NIAS7 MENTAWAI8 SUNDA STRAIT9 SOUTH WEST JAVA10 SOUTH JAVA11 SOUTH BALI-LOMBOK12 SOUTH CENTRAL JAVA13 SOUTH EAST JAVA14 SUNDA15 ASRI16 VERA17 BILLITON
18 NORTH WEST JAVA19 NORTH EAST JAVA20 FLORES21 WEST NATUNA22 EAST NATUNA23 MELAWI24 KETUNGAU25 PEMBUANG26 BARITO27 ASEM ASEM & PASIR28 PATERNOSTER29 UPPER KUTEI30 KUTEI31 MUARA32 NORTH EAST KALIMANTAN33 CELEBES34 NORTH MAKASSAR
35 SOUTH MAKASSAR36 LARIANG37 SPERMONDE38 SALAYAR39 SENGKANG40 BONE41 GORONTALO42 SOUTH MINAHASA43 NORTH MINAHASA44 BANGGAI-SULA45 SALABANGKA46 MANUI47 BUTON48 BANDA49 SAVU50 TIMOR51 TANIMBAR-KAIS
52 WEBER53 SERAM (BULA)54 NE HALMAHERA (KAU BAY)55 EAST HALMAHERA (BULI BAY)56 SE HALMHERA (WEDA BAY)57 ARAFURA58 ARU59 AKIMEUGAH60 CENTRAL IRIAN JAYA61 LENGGURU62 BINTUNI63 TELUK BERAU-AJUMARU64 MISOOL-ONIN65 SALAWATI66 WAIPOGA-WAROPEN
LIST OF BASINSTYPES OF BASINS
This distribution of basin in Indonesia is not an official document. This map has been prepared and modified
from the previous PERTAMINA/BEICEP 1982 and 1985 non exclusive studies.
TYPE OF CRUST ON WHICH THEBASIN REST
TECTONIC POSITION TOPLATE MARGIN
TYPE OF PLATE INTERACTION
PLATE MARGIN/
INTRAPLATE
- CONVERGENT
- DIVERGENT
- STRIKE SLIP
BASIN CHARACTERISTICS,
SIZE, CONFIGURATION,
SEDIMENTATION AND
STRUCTURATION
CONTINENTAL
MARGIN BASIN
TYPE
CONVERGENT
BASIN TYPE
After Kingston et al, 1983a
Basin Types and crustal Association
Basin Classification
Dasar pemikiran
HOT
SPOT
http://www.google.com/imgres?es_sm=93&espv=210&biw=1024&bih=494&tbm=is
ch&tbnid=XFUQfOS1U0n61M:&imgrefurl=http://hudsonvalleygeologist.blogspot.co
m/2011/03/nyiragongo.html&docid=QxR4Fi7F-
eztKM&imgurl=https://lh4.googleusercontent.com/-uIBQf7VMnAU/TXj6HZp6-
FI/AAAAAAAABJM/a7DPJe8lqUc/s1600/rv.gif&w=440&h=307&ei=b_h9Ur68Lc
KjrQe_x4DIBw&zoom=1&ved=1t:3588,r:16,s:0,i:127&iact=rc&page=2&tbnh=177
&tbnw=269&start=9&ndsp=12&tx=91&ty=86
Divergent boundary at continental
plates (rift Valey)
East African rift valley
And associated features
RELATION BETWEEN
SAGS,RIFTS, AULACOGENS and PASSIVE MARGINS
RELATION BETWEEN
SAGS,RIFTS, AULACOGENS and PASSIVE MARGINS
EVOLUTION MODEL : AULACOGEN and RELATED OROGENIC BELT
http://csmres.jmu.edu/geollab/vage
ol/vahist/Rift3.html
PLATES BOUNDARY : SUBDUCTION ZONE
A. Oceanic-continental
B. Oceanic-oceanic
C. Continental-continental
Three types of convergent Plate
Boundaries :
Tipe seting cekungan foreland (Willett et al., 1993 dalam Allen & Allen, 2005).
Skema penampang yang memperlihatkan tumbukan mikro-kontinen Banggai-Sula dengan Sundaland, Simandjuntak & Barber, 1996 dalam Satyana, 2008
MODEL OF
PULL-APART BASIN
DEVELOPMENT(After Mann et al.,1983, p.531)
A
CONTINUUM MODEL OF
PULL-APART BASIN
DEVELOPMENT(After Mann et al.,1983, p.531)
B
AFig.9 B
B
STTNAS YOGYAKARTA PERTAMINA DIT.HULU
Fig 9. Transcurrent, or strike-slip or wrench faults are used more or less synonymously
Transform boundaries
Fig. 10. Tectonic element system in Central Java
STTNAS YOGYAKARTA PERTAMINA DIT.HULU
Deep
High
Low