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"name": "Source rock potential of upper cretaceous marine shales in the Wind River Basin, Wyoming: Chapter 8 in Petroleum systems and geologic assessment of oil and gas resources in the Wind River Basin Province, Wyoming",
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"value": "ds69J8",
"url": "https://pubs.usgs.gov/publication/ds69J8"
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"value": 70047558
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"value": "10.3133/ds69J8",
"url": "https://doi.org/10.3133/ds69J8"
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"datePublished": "2007",
"dateModified": "2013-08-12",
"abstract": "Seventy-eight samples collected from marine shales from \nthe Cretaceous Mowry Shale, the lower part of the Frontier \nFormation, and the lower shaly and upper sandy members \nof the Cody Shale in the Wind River Basin, Wyoming, were \nanalyzed using Rock-Eval and total organic carbon analysis \nto determine the source rock potential. Results indicate \nthat the Mowry Shale has a generative potential based on \norganic richness that is considered to be fair to very good, \nand hydrogen indices and S2\n/S3\n ratios indicate a capability to \ngenerate both oil and gas. Maps of the Mowry indicate that \nit is most organic rich and oil-prone in the eastern part of the \nbasin. Results of total organic carbon and Rock-Eval analyses \nfor the Frontier Formation indicate that it is composed of \nmainly type III gas-prone kerogen, with organic richness \nlevels that are generally poor to fair. Results of similar \nanalyses of samples from the lower shaly member of the \nCody Shale show a generative potential ranging from fair to \nexcellent, and hydrogen indices and S2\n/S3\n ratios indicate that \nit is capable of generating both oil and gas. Maps showing \nthe distribution of kerogen types and organic richness for \nthe lower shaly member of the Cody Shale are similar to the \nMowry and show that lower shaly member of the Cody is \nmore organic rich and more oil-prone in the eastern part of the \nbasin. Analyses of samples of the upper sandy member of the \nCody Shale indicate that it has little or no potential as a source \nrock. Thermal maturity mapping based on vitrinite reflectance \nmeasurements in the coal-bearing post-Cody Upper \nCretaceous and Paleocene rocks shows that Upper Cretaceous \nmarine shales in the deeper parts of the Wind River Basin are \nthermally mature to overmature with respect to hydrocarbon \ngeneration.",
"description": "iii, 24 p.",
"publisher": {
"@type": "Organization",
"name": "U.S. Geological Survey"
},
"author": [
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"@type": "Person",
"name": "Finn, Thomas M. finn@usgs.gov",
"givenName": "Thomas M.",
"familyName": "Finn",
"email": "finn@usgs.gov",
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"value": "0000-0001-6396-9351",
"url": "https://orcid.org/0000-0001-6396-9351"
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"name": "Central Energy Resources Science Center",
"url": "https://www.usgs.gov/centers/central-energy-resources-science-center"
}
]
}
],
"funder": [
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"@type": "Organization",
"name": "Wind River Basin Province Assessment Team",
"url": "https://www.usgs.gov/centers/central-energy-resources-science-center"
}
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"name": "Wyoming"
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"name": "Wind River Basin Province"
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