The Tanqua Fan Complex, Karoo Basin, South Africa—Outcrop Analog for Fine-Grained, Deepwater Deposits
H. Deville Wickens, A. H. Bouma, 2000. "The Tanqua Fan Complex, Karoo Basin, South Africa—Outcrop Analog for Fine-Grained, Deepwater Deposits", Fine-Grained Turbidite Systems, Arnold H. Bouma, Charles G. Stone
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The Permian Tanqua fan complex, SW Karoo Basin, South Africa, is unde-formed and well exposed, allowing 3-D viewing of outcrops that are laterally continuous over tens of kilometers. The complex consists of six sand-rich tur-bidite systems, separated by basin shales. The first five form an incrementally prograding, laterally compensating set, whereas the sixth fan, located to the south, downlaps onto Fan 5. Although deposited in a basin flanked by an oro-genic belt, the Tanqua fan complex has depositional characteristics similar to fans deposited in passive margin settings. It is a fine-grained, mud-rich bypass system deposited within an unconfined basinal setting. The deposits show architectural and reservoir character changes as they occur from the base-of-slope to their distal termination.