4: A Comparison of Silica Diagenesis in the Devonian Woodford Shale (Central Basin Platform, West Texas) and Cretaceous Mowry Shale (Powder River Basin, Wyoming)
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Published:January 31, 2020
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CiteCitation
Mark W. Longman, William R. Drake, Kitty L. Milliken, Terri M. Olson, 2020. "A Comparison of Silica Diagenesis in the Devonian Woodford Shale (Central Basin Platform, West Texas) and Cretaceous Mowry Shale (Powder River Basin, Wyoming)", Mudstone Diagenesis: Research Perspectives for Shale Hydrocarbon Reservoirs, Seals, and Source Rocks, Wayne K. Camp, Kitty L. Milliken, Kevin Taylor, Neil Fishman, Paul C. Hackley, Joe H. S. Macquaker
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ABSTRACT
The Devonian Woodford Shale and Cretaceous Mowry Shale consist of relatively deep (below storm wave base) intracratonic basin deposits commonly referred to as “shales” because of their dark gray to nearly black color, very fine-grained nature, pelagic fossils such as radiolarians, and common amorphous marine kerogen. These shales typically contain less than 30% detrital clay by weight and more than 50% quartz (locally up to 80%). The quartz is a mix of biogenic grains, mainly radiolarians, and authigenic silica along with some detrital quartz silt of extrabasinal origin. The authigenic silica is dominantly microcrystalline (< 1 micron) and forms...
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Contents
Mudstone Diagenesis: Research Perspectives for Shale Hydrocarbon Reservoirs, Seals, and Source Rocks
GeoRef
- authigenic minerals
- Central Basin Platform
- clastic rocks
- Cretaceous
- depth
- Devonian
- diagenesis
- electron microscopy data
- framework silicates
- kerogen
- marine environment
- maturity
- Mesozoic
- mineral composition
- Mowry Shale
- mudstone
- organic compounds
- Paleozoic
- petrography
- Powder River basin
- quartz
- reservoir rocks
- sedimentary rocks
- SEM data
- silica
- silica minerals
- silicates
- silicification
- Texas
- textures
- total organic carbon
- United States
- West Texas
- Woodford Shale
- Wyoming
- X-ray diffraction data
- Athel Silicilyte