Evolusi Cekungan Sedimen(4)

7/17/2019 Evolusi Cekungan Sedimen(4)

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eddy purnomo 4 unpad bdg

EVOLUSI CEKUNGAN SEDIMENEVOLUSI CEKUNGAN SEDIMEN

eddy purnomo / 620438

jatinangor november 2006


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MATEI KULIA!

PENDAHULUAN

PRINSIP2 DASAR E!UN"AN SEDI#ENCe"#ngan $e%imen v$ &'ate te(toni(Me"ani"a 'it)o$*er

#E!ANIS#E PE#$EN%U!AN E!UN"AN SEDI#ENLit)o$+eri( $tret()ing,'e-#reStri"e $'i+ %e*ormation

%HE SEDI#EN%AR& $ASIN 'ILL,a"tor +engontro'De+o$itiona' $t.'e

E()LUSI E!UN"AN SEDI#ENS#b$i%en(e )i$tor.T)erma' )i$tor.

APLI!ASI DALA# INDUS%RI E * P #I"AS


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EVOLUSI CEKUNGAN:

Perubahan intensitas tektonik

Perubahan rezim tektonik

- Subsidence vs uplifting

- Hotter vs cooler

Tercermin dalam perubahan stratigrafi dan perubahan

struktur


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SU/SIDENCETectonic origin

Sediment load

Perubahan temperatur & tekanan

Perubahan Petroleum System

Kematangan batuan induk

kspulsi & migrasi

Porositas & permeabilitas batuan

Sealing capacit!


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&er#ba)an Tem+erat#r

"ithospheric origin

Thermal conductivit! #cla!-$ater mi% shale'

(adioactive material

Subsurface $aterflo$

- lo$ heat flo$ ) recharge region

- high heat flo$ ) discharge region

Subsidence


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In%i"ator +er#ba)an tem+erat#r

*itrinite reflectance

Time thermal inde%

*ision Track

"og temperatur


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&a'aeogeot)erma' !i$tor.

+ormal , near normal

radient geothermal ./ , 01 2 km

(o 13/4 5 0 km depth

2ongo6 gabon6 Teluk 7e%ico6


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&a'aeogeot)erma' !i$tor. (ont12ooler basin #h!pothermal basin'

radient geothermal 8 ./ 2 km

(o 13/4 5 / km depth

9ceanic trench6 outer fore arc6 foreland

(!u-K!u & apan Trench6 +orth ;lpine foreland basin

5 southern erman! : .. , .< 2 km


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&a'aeogeot)erma' !i$tor. (ont1

Hotter basin #h!perthermal basin'

radient geothermal = /1 2 km

(o .4 5 0 km depth

"ithospheric stretching6 back arc basin6 oceanic rift6

strike slip basin6

(ed sea & (hine basin #= >11 2 km'6 2alifornian strike slip

basin #.11 2 km'6 2ongo 0304 5 " 2ret6 2ooper basin /4

5 Permian


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Samuel & ultom6 >?@?@


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Samuel and ultom #>?@


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P(S+T TA7

To+ &arigi ,m3

To+ U++er Cib#'a"an ,m3

To+ Intra U++er Cib#'a"an ,m3

To+ /, e43

To+ TA, e43

To+ Vo'(ani( 5atibarang3

To+ /a$ement

78 90 Km


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78 90 Km


To+ /a$ement


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78 90 Km


To+ /a$ement


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78 90 Km

To+ TA, e43


To+ /a$ement


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78 90 Km

To+ /, e43

To+ TA, e43


To+ /a$ement


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78 90 Km


To+ /, e43

To+ TA, e43


To+ /a$ement


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78 90 Km



To+ /, e43

To+ TA, e43


To+ /a$ement


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P(S+T TA7

To+ &arigi ,m3



To+ /, e43

To+ TA, e43


To+ /a$ement

78 90 Km


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T(A7; K;SAHT(A7; K;SAH

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Evolusi Cekungan Sedimen(4)