Page 13 - Sumatra Geology, Resources and Tectonic Evolution

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97 ° 98 ° 99 ° 100 ° 101° 102 °
STRUCTURAL MAP OF SUMATRA
0 1 O0 200km
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4 ° !i ........ ~iet
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\ PENINSULAR
\ Basin MALAYSIA
Tao~tl
3 °
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I/i'~ ¸¸¸¸¸ ¸ ':; INDIAN
PLATE

\ st~ TECTONIC MAP "
Pre-Tertiarv Accreted Terranes
Nias
>L_~ Bintan
_1 °
Riau
',,, Islands
INDIAN %

-0 o Batu ~i Pini ~Lin a
OCEAN
Islands ~'~

Syncline
Anticline
- loS ADANG
Transcurrent Fault
Siberut
Monocline
Normal Fault
_ 2 °
Thrust ~ Volcanic Centre

N.B. Paler colours represent undersea extension

TERTIARY Volcanic Units
- 3 ° AND
QUATERNARY Sedimentary Units
JURASSIC Woyla Nappe \
AND (Oceanic Arc and Accretionary Complex)
CRETACEOUS
TRIASSIC- ~ Continental Deposits BENGKULU
4 ° CRETACEOUS (Kualu, Tuhur, Rawas, Peneta, Asai,
Bintan, Tempilang)
Conoco~hillips PRE-TRIASSIC BASEMENT Sunda Basin

Bentong-Belitung
Accretionary Complex
-5 °
Sibumasu (East Sumatra) Block
Medial Sumatra Tectonic Zone
(Pale tint beneath Tertiary sediments)
West Sumatra Block
95 ° 96 ° 97 ° 98 ° 99 ° 100 ° 01 ° \ ' 102° ~ 10301 104°1 05o"~r" e e=
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