NEW INSIGHT OF STRUCTURAL EVOLUTION OF THE TIMOR ISLAND AND AUSTRALIAN CONTINENTAL MARGIN
Timor Island is type locality of arc-continent collision, which involve Australian continental margin and Banda Arc system. Deformation in the island is very complex involving Australian passive margin sequences in the south and fore-arc sediment of Banda region to the north. Two styles of faults are observed in the area, which are fold-thrust-belt and normal fault system. Although, thrust fault mostly occurred in the Timor area where normal faults system occurred within the Australian continental margin. Timor trough marked the boundary between thrust faults and normal fault system. Seismic data shows some of this normal fault is reactivated of older fault normal faults system as part of Permian rift graben. There is no clear evidence this faults system are developed under Timor Island. Over all, subsurface evidence indicate both fault style are occurred almost in the same time. The present interpretations propose that loading of thrust system affected the development of normal faults within the Australian continental margin.