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Tektonik dan Cekungan-cekungan yang berada di Indonesia Berdasarkan Pertamina UTC.Berisi tentang pembentukan dan perkembangan yang dipengaruhi oleh tektonik
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TECTONICS AND PETROLEUM BASINS, INDONESIA
UPSTREAM TECHNOLOGY CENTER
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3BASIN CLASSIFICATION BASED ON PLATE TECTONICS
Classification of Bally dan Nelson (1980)
Classification of Kingston (1983) This classification takes superimposition of one basin on top of the other separated by unconformities
1. INTRA-CRATONIC/CONTINENTAL BASINSConvergenceDivergenceTransvergence
2. CONTINENTAL MARGIN BASINSActive continental margins (convergence/transvergence)Passive continental margins (divergence)
3. OCEANIC BASINS
4INTRA-CRATONIC/CONTINENTAL BASINS
1. Divergence
Rifting ----> grabens, half graben basins ---->synrift sedimentation
Break-up -----> aulacogene basins -------> deltaic sedimentation
2. Convergence
Collision (Suture related)
Foreland Basin
Hinterland Basin
3. Transvergence
Strike-slip (rift) basin
5CONTINENTAL MARGIN BASINS
Passive Margin (pinggiran passive)
Atlantic Type
Aulacogene type (Deltas)
Active Margin (Pinggiran Aktif)
Subduction/obduction
1.Back-arc Basin
2.Inter-arc Basin
3.Fore-arc Basin
Transcurrent Margin
1.Pull apart basins, (strike-slip basins
6BASIN EVOLUTION
Sedimentary basins evolved from one to another type
Superimposition of various type of basin on top of the other occurs
Sedimentary sequences of various types of basin can be analysied in tectono-stratigraphical sequences:
7EVOLUTION OF BASINS:
RIFT TO FORELAND BASINRIFT-DRIFT-COLLIDE
8EVOLUTION OF BASINS
RIFT BACK ARC BASIN
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9THE CONCEPT OF COMPOSITE OR POLY-BASINS
DUE TO THE TECTONIC DEVELOPMENT A SEDIMENTARY BASIN CAN BE COMPOSED OF DIFFERENT CATEGORIES OF SEDIMENTARY BASINS
DIFFERENT TYPES OF SEDIMENTARY BASINS CAN BE PARTIALLY OR ENTIRELY SUPERIMPOSED ON EACH OTHER.For examples: A half graben at the base is overlain by a back-arc basin A rift basin is overlain by a passive margin basin, which in turn is overlain
by a carbonate platform, and the whole affair is compressed into a foreland basin on top.
A BASIN WHICH FROM BASEMENT TO PRESENT-DAY DEPOSITIONAL INTERFACE CONSISTS OF SEVERAL TYPES OF BASIN SUPERIMPOSED OVER EACH OTHER IS CALLED A COMPOSITE BASIN OR POLY-BASIN (Kingston, et al, 1981)
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SUMMARY OF INDONESIAN REGION TECTONICS
YOUNG AND COMPLEX TECTONIC HISTORY
DIVIDED INTO TWO : WESTERN AND EASTERN TECTONIC PROVINCES
WESTERN DOMAIN (SUNDALAND)ASIAN AFFINITYCONVERGENT MARGIN SINCE MEZOSOIC (OIL PRONE BASINS
EASTERN DOMAIN AUSTRALIAN AFFINITY PASSIVE MARGIN UNTIL LATE MIOCENE, THEN COLLISION INVOLVING NUMEROUS MICROTECTONICS GAS PRONE BASINS
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TECTONIC SETTING OF INDONESIAN REGION
ACTIVE TECTONICS REGION
INTERACTION OF THREE MAJOR PLATES
COMPLEX TECTONIC HISTORY
DIVIDED INTO WESTERN AND EASTERN INDONESIA
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TECTONICS MODEL OF WESTERN INDONESIAN REGIONS
HAMILTON (1979) Non Rotational Model
TAPPONIER (1986) - Indentation Tectonics
DALY et al. (1991) Clockwise Rotation Model
HALL (1996) Counter Clockwise Rotation Model
PARKINSON et al. (1998) Micro-continent
WAKITA et al., (1999) Micro-continent
SAPIIE et al., (2003) East Java Micro-continent
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India- Asia CollisionBased on Extrusion Model
Tapponier (1986)
Development and Distribution
of Western Indonesia
Paleogene Basins
Andaman Sea Opening
Sumatra Fault Zone
(SFZ) Dextral System
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TAPPONIER (1986) - Indentation Tectonics
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TECTONIC EVOLUTION OF WESTERN INDONESIA
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DALY et al. (1991) Clockwise Rotation Model
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CENOZOIC TECTONIC EVOLUTION OF SE ASIA
15HALL (1996) Counter Clockwise Rotation Model
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TERTIARY BASIN AGES
Hall (2005)
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TECTONIC PROVINCES AND STRUCTURAL TRENDS-EASTERN INDONESIA
OIL/GAS FIELD17
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TECTONIC PROVINCES AND STRUCTURAL TRENDS-EASTERN INDONESIA
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BASIN REQUIREMENT FOR HYDROCARBON GENERATION AND ACCUMULATION
1. Presence of source rock, depending on the basin configuration and type of basin.
2. Maturation which depends on heat-flow/ thermal history, age of the sediments
3. Presence of reservoir rock and trapping conditions.
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SEDIMENTARY THICKNESS
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HEAT FLOW MAP OF INDONESIAN REGION
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