Seismic stratigraphy and subsidence evolution of the northwest Sumatra fore-arc basin

Neogene subsidence and stratigraphy of the Simeulue forearc basin, Northwest Sumatra

“…The Banyak Islands separate the Simeulue basin from the southerly located Nias basin. To the north the Aceh basin can be clearly distinguished by a ridge-like structure in between and a change in water depth of more than 1500 m (Izart et al, 1994). The Simeulue basin itself is trench-parallel elongated and extends over 260 km in NW-SE direction and 100 km in SW-NE direction.…”

26th December 2004 great Sumatra–Andaman earthquake: Co-seismic and post-seismic motions in northern Sumatra

“…In the Aceh forearc basin, fossil linear faults parallel to the Sumatra Fault (Fig. 2), sometimes showing a compressive component, were identified in its southern portion [13] (Figs 2 and 3). Along the northeastern slope of the Outer Arc, southwest of the Aceh Basin, a festoon of discontinuous strike-slip faults was observed and corresponds to the possible southern extension of the West Andaman Fault (Fig.…”

“…To the southeast, the connection of the Sumatra Fault with the Mentawai Fault located north of Simeulue Island (e.g. [13]) or with a former plate boundary located south of Simeulue Island [12] is still unclear. Even if two strike-slip aftershocks occurred close to the West Andaman Fault in the days following the 26 December event [14], and if the two Sumatra and West Andaman fault systems are considered as geologically active systems, they were not active during the 2004 earthquake.…”

Deep Sea Sediment Gravity Flow Deposits in Gulf of Tomini, Sulawesi

“…An oil exploration and geological studies of the North Sumatera fore-arc Basin (Izart et al, 1994), Central Sumatera Basin (Matson and Moore, 1992), West Sumatera Basin (Beaudry and Moore, 1985), East Java Basin (Letouzey et al, 1990;Brensden et al, 1992;Koesoemadinata et al, 1999;Basden et al, 2000;Sribudiyani et al, 2003) and fore-arc basin off southwest Sumatera and southwest Java (Susilohadi et al, 2005) give a valuable information on the geological evolution of this region. Studies of central Indonesian basins such as: Flores and Savu-Lombok fore-arc Basins (Silver et al, 1986;Van Weering et al, 1989;Van der Werff et al, 1994) and Bali back-arc basin (Kusnida, 2001) provide a broad outline of the geometry and sedimentary sequences of this active margin system and portray the Cenozoic evolution of the basin.…”