indonesian region – tectonic elements. indonesian region – earthquake hypocenters (since 1973)...
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![Page 1: Indonesian Region – Tectonic Elements. Indonesian Region – Earthquake Hypocenters (since 1973) Epicenter for M=9.0 event Dec 26, 2004](https://reader035.vdocuments.net/reader035/viewer/2022070308/551c1e915503469e4f8b5a07/html5/thumbnails/1.jpg)
Indonesian Region – Tectonic ElementsIndonesian Region – Tectonic Elements
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Indonesian Region – Earthquake Hypocenters Indonesian Region – Earthquake Hypocenters (since 1973)(since 1973)
Epicenter for M=9.0 event Dec 26, 2004
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INDONESIAN REGION TECTONIC ELEMENTS &
PORPHYRY DEPOSITS
INDONESIAN REGION TECTONIC ELEMENTS &
PORPHYRY DEPOSITS
30o
40o
55o
65o>70o
EQ<300kmEQ
>600km
Toba
Krakatoa
Martabe
Slab topologies confirmed by tomographic imaging
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RooRise
55o
65o
500 km
(Modified from McCaffrey, 1988)
2 - 3 mm/yr E-W extension on strike-slip faults.
Hypocenter depths < 30 km
N15oE subduction at 7 cm/yr.
BANDA ARC, INDONESIABANDA ARC, INDONESIA EARTHQUAKE FAULT PLANE SOLUTIONSEARTHQUAKE FAULT PLANE SOLUTIONS
Batu Hijau
Elang
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Simplified Geology of SumbawaSimplified Geology of Sumbawa Differential Differential
ExhumationExhumation
Elang
Hu’ u
Soripesa
Most uplifted
Western block
Central block
Eastern blockLeast uplifted
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Chronology of Map Units in Chronology of Map Units in SumbawaSumbawa