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Indonesian Region – Tectonic Elements. Indonesian Region – Earthquake Hypocenters (since 1973) Epicenter for M=9.0 event Dec 26, 2004.

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Presentation on theme: "Indonesian Region – Tectonic Elements. Indonesian Region – Earthquake Hypocenters (since 1973) Epicenter for M=9.0 event Dec 26, 2004."— Presentation transcript:

1 Indonesian Region – Tectonic Elements

2 Indonesian Region – Earthquake Hypocenters (since 1973) Epicenter for M=9.0 event Dec 26, 2004

3 INDONESIAN REGION TECTONIC ELEMENTS & PORPHYRY DEPOSITS 30 o 40 o 55 o 65 o >70 o EQ <300km EQ >600km Toba Krakatoa Martabe Slab topologies confirmed by tomographic imaging

4 Roo Rise 55 o 65 o 500 km (Modified from McCaffrey, 1988) mm/yr E-W extension on strike-slip faults. Hypocenter depths < 30 km N15 o E subduction at 7 cm/yr. BANDA ARC, INDONESIA EARTHQUAKE FAULT PLANE SOLUTIONS Batu Hijau Elang

5 Simplified Geology of Sumbawa Differential Exhumation Elang Hu’ u Soripesa Most uplifted Western block Central block Eastern block Least uplifted

6 Chronology of Map Units in Sumbawa


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