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1 Division of Petroleum Resources, Commonwealth Scientific and Industrial Research Organization, Australian Resources Research Centre (ARRC), 26 Dick Perry Avenue, Technology Park, Kensington, Western Australia 6151, Australia; anthony.gartrell{at}csiro.au
2 Curtin University, Department of Exploration Geophysics, ARRC, 26 Dick Perry Avenue, Technology Park, Kensington, Western Australia 6151, Australia
3 Curtin University, Department of Exploration Geophysics, ARRC, 26 Dick Perry Avenue, Technology Park, Kensington, Western Australia 6151, Australia
Anthony Gartrell received a B.Sc. degree (geology) with honors from the University of Western Australia (UWA) in 1993. He worked as a research officer at UWA in collaboration with WMC Resources prior to joining WMC's Petroleum Division in 1995. Anthony completed his Ph.D. in structural geology at UWA in 2000 and is presently working with the Commonwealth Scientific and Industrial Research Organization Petroleum as a research scientist.Christopher Hudson graduated with a B.Sc. degree (honors) in petroleum geophysics from the Department of Exploration Geophysics at Curtin University in 2002. He is currently working with ChevronTexaco as an applications geoscientist, promoting the use of best practice technologies throughout the scientific community he supports.
Brian Evans is professor of geophysics at Curtin University. His research interests include all forms of physical modeling of geological structure, three-dimensional seismic imaging, reservoir monitoring, and the seismic response to pressure variations on fluids in reservoirs. Author of the Society of Exploration Geophysicists book Seismic Data Acquisition in Exploration, he is a member of the Australian Society of Exploration Geophysicists, Society of Exploration Geophysicists, Society of Petroleum Engineers, and Petroleum Exploration Society of Australia.
Analog models were used to investigate the influence of cross-trending basement faults on inverted rift systems similar to those located in the Makassar Straits. Multilayer models composed of sand, silicone putties, and a silicone-plasticine mixture were constructed so that laterally offset rift basins would form on either side of a preexisting basement fault. Transfer zones comprising a series of en echelon normal faults that connect downward with the basement fault formed to link the laterally offset rift basins during the extension phase. Subsequent oblique inversion of the models resulted in a general progression starting with broad folding, followed by the development of small-scale inversion anticlines associated with reactivated rift faults, to thrust faulting, and finally, to the formation of cross-trending wrench faults. Rift fault reactivation and wrench fault development were prominent in the transfer zones because of the orientation of the constituent faults (oblique to the shortening direction) and their connection with the underlying basement fault. The addition of an intrasedimentary detachment layer, which represents a thick overpressured shale present in the vicinity of the economically important Mahakam delta, allowed gravitational collapse and extensional faulting to occur on structural highs. The cross-trending basement fault was again the locus for inversion structures, both above and below the detachment layer in the latter case, which may have influenced the distribution of petroleum in the region.
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  E.A. Konstantinovskaya, D. Rodriguez, D. Kirkwood, L.B. Harris, and R. Theriault Effects of Basement Structure, Sedimentation and Erosion on Thrust Wedge Geometry: An Example from the Quebec Appalachians and Analogue Models Bulletin of Canadian Petroleum Geology, March 1, 2009; 57(1): 34 - 62. [Abstract] [Full Text] [PDF]
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