Regional diagenetic trends in the lower Cretaceous muddy sandstone, Powder River basin
Journal Article
·
· Soc. Econ. Paleontol. Mineral., Pac. Sect., Guideb.; (United States)
Lower Cretaceous sandstones of the muddy formation have produced a number of significant hydrocarbon reservoirs in the Powder River basin. These reservoir sandstones are accumulated in a variety of fluvial, deltaic, and shallow marine environments. The porosity and permeability of muddy sandstones are affected significantly by the amount and composition of diagenetic clay minerals. Diagenetic clay mineral assemblages within the muddy sandstones are time controlled. Oldest muddy sandstones (sedimentologic zones 5 and 6) are characterized by a kaolinite-chlorite-illite-quartz assemblage with some smectite. Intermediate muddy sandstones (sedimentologic zones 3 and 4) are characterized by an illite-smectite assemblage with sporadic chlorite, quartz, and kaolinite. Youngest muddy sandstones (sedimentologic zones 1 and 2) are characterized by a kaolinite-quartz assemblage.
- OSTI ID:
- 6719454
- Journal Information:
- Soc. Econ. Paleontol. Mineral., Pac. Sect., Guideb.; (United States), Journal Name: Soc. Econ. Paleontol. Mineral., Pac. Sect., Guideb.; (United States) Vol. 26; ISSN SPPGA
- Country of Publication:
- United States
- Language:
- English
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·
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·
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Related Subjects
02 PETROLEUM
020200* -- Petroleum-- Reserves
Geology
& Exploration
ALUMINIUM COMPOUNDS
ALUMINIUM SILICATES
CHALCOGENIDES
CHLORITE MINERALS
CLAYS
CRETACEOUS PERIOD
DIAGENESIS
FEDERAL REGION VIII
GEOLOGIC AGES
GEOLOGIC DEPOSITS
GEOLOGIC HISTORY
HYDROCARBONS
ILLITE
KAOLINITE
MESOZOIC ERA
MINERALS
MONTANA
NORTH AMERICA
ORGANIC COMPOUNDS
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
PERMEABILITY
POROSITY
QUARTZ
ROCKS
SANDSTONES
SEDIMENTARY ROCKS
SILICATE MINERALS
SILICATES
SILICON COMPOUNDS
SILICON OXIDES
SMECTITE
USA
WYOMING
020200* -- Petroleum-- Reserves
Geology
& Exploration
ALUMINIUM COMPOUNDS
ALUMINIUM SILICATES
CHALCOGENIDES
CHLORITE MINERALS
CLAYS
CRETACEOUS PERIOD
DIAGENESIS
FEDERAL REGION VIII
GEOLOGIC AGES
GEOLOGIC DEPOSITS
GEOLOGIC HISTORY
HYDROCARBONS
ILLITE
KAOLINITE
MESOZOIC ERA
MINERALS
MONTANA
NORTH AMERICA
ORGANIC COMPOUNDS
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
PERMEABILITY
POROSITY
QUARTZ
ROCKS
SANDSTONES
SEDIMENTARY ROCKS
SILICATE MINERALS
SILICATES
SILICON COMPOUNDS
SILICON OXIDES
SMECTITE
USA
WYOMING