The Paleozoic stratigraphic succession of the Ouachita Basin is dominated by deepwater siliciclastics, carbonates, and chert. Within the Carboniferous, the Stanley fan complex is a thick shale interval, with upper and lower sandstone sections, that was deposited during an overall sea level highstand. The overlying Jackfork Formation is predominantly a sandstone section, with no shelf equivalent. The Johns Valley Formation, a unit of turbidite sandstone, shales, and unusual boulder beds, overlies the Jackfork. The 6100-m-thick Atoka Formation succeeds the Johns Valley. This thick sandstone and shale interval is divisible into a central basin (or axial) fan complex, a series of slope (or intraslope basin) fans, and thick shelf margin deltaic complex.
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.