Talk:Bonaparte Basin

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Overview

The Bonaparte Basin is located off of the Northwestern coast of Australia. The basin is fan shaped and is located over an area of 270,000 sq km with approximately 20,000 sq km extending onshore[1]. The formation of the basin took place during the Paleozoic extension in two parts and the latter half of the Triassic compression. The basin is characterized by its v-shape and is located between the Browse Basin to its west and the Money Shoals Basin to the northeast. Alliance Oil Developments was the first to drill a well in the 1960s. The area has had over 90 wells in the off-shore portion.

Geologic Setting

The 'v-shape' of the basin was developed during the late Devonian and into the earlier parts of the early Carboniferous. The area at this time was experiencing a north-opening rift. [2] Due to the compression in the Triassic period, the N-S region experienced a period of uplift and erosion. With other events, such as tectonics and inversion and anticlines were produced in the sub-basin. The uplifted areas of the region eroded and collapsed allowing the deposition of “Lower-Middle Jurassic ‘redbeds’”. There are thick marine mudstone deposits which are “flanked” by fan-delta sandstones. The convergence of the Australian and Eurasian plates during the late Miocene-Pliocene caused the fault systems to reactivate primarily among the Timor Trough, which is located just north of the basin. [3]