Characteristics of a Distributary Channel-Levee-Overbank System, Tanqua Karoo
A complex of distributary channel fills (termed here “distributary channel system”), exposed on the Bloukop farm, shows a complex internal architecture, comprised of seven individual channel fills, levee, and crevasse splay deposits. This distributary channel system is embedded in overbank deposits that reflect times when distributary channels were active elsewhere in the basin. Two types of channel fill illustrate the downdip morphologic changes of the individual feeder channels within a distributary channel system. The vertical stacking of each channel type within the outcrops reflects both the updip/downdip shift of the center of sheet sand deposition and its lateral movement within a sheet sand lobe.
Figures & Tables
This Memoir covers one of the most important and active exploration reservoirs being pursued by geoscientists worldwide: fine-grained turbidite systems. 28 chapters show the results of an intense research effort in the 1990s that resulted from the discovery of large hydrocarbon accumulations in fine-grained turbidite systems in Brazil, the Gulf of Mexico, West Africa, and the North Sea. Industry and academia have joined together in this publication and the result is a unique opportunity to study these turbidite systems from the outcrop to the modeling; through the interpretation with 2-D and 3-D seismic data; to case histories and analog studies from Arkansas and Oklahoma, South and West Africa, Gulf of Mexico, west Texas, and New Zealand.