Delineating Basin in Atambua, West Timor with Novel Gravity Data
Keywords:
2.5D modeling, Atambua, basin, basement, gravity, TimorAbstract
Atambua, West Timor has a complex-geological structure. However, the subsurface-geological model based on geophysical data is still limited there or imaging of Timor Island is only available at crustal-mantle scale whose spare spatial resolution. Therefore, this paper aims to map basement configuration in Atambua as well as to delineate its basin and lineament. This study used ground data gravity acquired by Scintrex CG-5, proceed with standard procedure processing, and interpreted it with geology data. The results of the research are the boundary of the basin from the Atambua basin indicated by -26 to -52 mGal and the Central basin whose gravity anomaly of -16 to -52 mGal, exhibiting a trend of lineament that is Southwest–Northeast, and configuration of basement topography namely undulating basement. Basement high dominating Northern–Northwestern and Eastern–Southeastern while lower basement located in the middle area from North to South zone. On the other side average thickness of the sedimentary layer from paraautochthon in the line AA’, line BB’, and line CC’ are 3, 3, and 4 Kilometers respectively implying the possibility to generate hydrocarbon.
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References
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