Architectural Variability and Depositional Trends in the Wilcox Group in Texas

SW0022D. Architectural Variability and Depositional Trends in the Wilcox Group in Texas, by M. I. Olariu, W. A. Ambrose, Sigrid Clift, Austin Clayton, Shunli Li, Cornel Olariu, R. J. Steel, Hongliu Zeng, and Jinyu Zhang. October 2016. 75 p., 19 MB. - Downloadable PDF.
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About This Publication
This work is material from a core workshop presented by Bureau of Economic Geology State of Texas Advanced Resource Recovery Program, Austin Geological Society, and Jackson School of Geosciences.

Excerpt
The purpose of this workshop is to present the sedimentology and ichnology of the Wilcox Group in Texas based on core information to help to determine depositional environments. The integration of the physical and biogenic features within these deposits affords the opportunity to characterize the facies and facies successions and to explain the observed facies variability.

Cores in the Wilcox Group in Texas display a variety of facies from distributary channels and flood plains (Carl Gillette #1, Moczygemba #ll), tidal flats dissected by intertidal channels and creeks (Vogelsang Frieda #1) to wave-dominated deltaic and shoreface deposits (Nagel Charles #1, Apache #1-B Tips, Vogelsang Frieda #1, Moczygemba #ll) and slope deposits (Allen #2).

Cores are useful in understanding reservoir architecture because they display a vertical profile of rock fabric, contacts between beds, and sedimentary structures. Vertical trends in lithology, grain size, and stratification record changes in sedimentary processes and depositional environments through time.


Keywords: core, core workshop, deposition, Texas, Wilcox Group


Citation
Olariu, M. I., Ambrose, W. A., Clift, Sigrid, Clayton, Austin, Li, Shunli, Olariu, Cornel, and others, 2016, Architectural Variability and Depositional Trends in the Wilcox Group in Texas: The University of Texas at Austin, Bureau of Economic Geology, SW0022, 75 p.