The Bouguer gravity field and crustal structure of eastern Timor |
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Authors: | F.H. Chamalaun K. Lockwood Antony White |
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Affiliation: | School of Earth Sciences, The Flinders University of South Australia, Bedford Park, S.A., Australia |
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Abstract: | The results from a recent North—South gravity traverse across eastern Timor show that the Bouguer gravity field is characterized by a strong, 6 mGal/km, gradient on the north coast. This gradient appears to be a fundamental feature of Timor and of the Outer Banda Arc. Preliminary computer models suggest that, to a first approximation, the gradient is due to a vertical fault at the north coast of Timor separating oceanic crust from continental crust. The fit between the computed and observed gradient can be improved significantly by assuming a northward-dipping lithospheric slab, north of Timor. The model further indicates that the Australian continental crust extends at least as far as the north coast of Timor. |
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