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Oxygen-isotope, X-ray-diffraction and scanning-electron-microscope examinations of authigenic-layer-silicate minerals from Mississippian and Pennsylvanian sandstones in the Michigan Basin

Open-File Report 93-103

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Abstract

Oxygen-isotope compositions of authigenic-layer silicates (<2-micrometer fraction) extracted from Mississippian and Pennsylvanian sandstones in the Lower Peninsula of Michigan were determined. Petrographic and scanning-electron-microscope examinations, and X-ray diffractograms show that chlorite and kaolinite are the most common authigenic-layer silicates in Mississippian sandstones. The range of oxygen-isotope compositions of chlorite and kaolinite are +10.3 to +11.9 and +12.9 to +19.3 pars per thousand (per mil) (relative to Standard Mean Ocean Water), respectively. Kaolinite is the only authigenic-isotopic compositions of kaolinite range from +16.8 to +19.0 per mil.

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Additional publication details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
Oxygen-isotope, X-ray-diffraction and scanning-electron-microscope examinations of authigenic-layer-silicate minerals from Mississippian and Pennsylvanian sandstones in the Michigan Basin
Series title:
Open-File Report
Series number:
93-103
Year Published:
1993
Language:
English
Publisher:
U.S. Geological Survey
Publisher location:
Lansing, MI
Contributing office(s):
Michigan Water Science Center
Description:
iv, 15 p.
Country:
United States
State:
Michigan
Other Geospatial:
Michigan Basin