Item talk:Q59724
From geokb
{
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"additionalType": "USGS Numbered Series",
"name": "Evidence for Cambrian petroleum source rocks in the Rome trough of West Virginia and Kentucky, Appalachian basin",
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"value": "pp1708G.8",
"url": "https://pubs.usgs.gov/publication/pp1708G.8"
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"value": 70055613
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"value": "10.3133/pp1708G.8",
"url": "https://doi.org/10.3133/pp1708G.8"
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"datePublished": "2014",
"dateModified": "2020-05-14",
"abstract": "A 130-foot-thick Cambrian black shale sampled from a core between 11,150 and 11,195 feet in the Exxon No. 1 Smith well in Wayne County, W. Va., has been identified as a good to very good source rock. The black shale is located in the Middle Cambrian Rogersville Shale of the Conasauga Group. Total organic carbon (TOC) values of four samples that range from 1.2 to 4.4 weight percent (average 2.6 weight percent) are the highest reported to date in the pre-Knox section of the Rome trough. Although the samples are probably in the zone of gas generation based on their low hydrogen index values (55 to 63) and temperature maximum of second hydrocarbon peak (S2) values of about 465\u00b0C, first hydrocarbon peak (S1) values of 0.81 to 2.71 indicate that they contain free extractable hydrocarbons. A bitumen sample extracted from the Rogersville Shale is characterized by (1) a broad spectrum of n-alkanes from n-C11 through n-C30, (2) strong odd-carbon predominance in the n-C13 to n-C19 range, and (3) small but detectable amounts of isoprenoids pristane and phytane. The strong odd-carbon predominance of the n-C15 to n-C19 n-alkanes is commonly attributed to the Ordovician alga Gloeocapsomorpha prisca. This occurrence of G. prisca is among the first to be reported in Cambrian rocks. Thin black shale beds collected from the Lower to Middle Cambrian Rome Formation in the Texaco No. 1 Kirby well in Garrard County, Ky., have TOC values as high as 3.2 percent, hydrogen index values as high as 417, and bitumen extract characteristics similar to the Rogersville Shale.\nThe bitumen extract from the Rogersville Shale compares very closely with oils or condensates from Cambrian reservoirs in the Carson Associates No. 1 Kazee well, Homer gas field, Elliott County, Ky.; the Inland No. 529 White well, Boyd County, Ky.; and the Miller No. 1 well, Wolfe County, Ky. These favorable oil-source rock correlations suggest a new petroleum system in the Appalachian basin that is characterized by a Conasauga Group source rock and Rome Formation and Conasauga Group reservoirs. This petroleum system probably extends along the Rome trough from eastern Kentucky to at least central West Virginia.",
"description": "v, 36 p.",
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"name": "U.S. Geological Survey"
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"name": "Burruss, Robert A. burruss@usgs.gov",
"givenName": "Robert A.",
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"name": "Eastern Energy Resources Science Center",
"url": "https://www.usgs.gov/centers/geology-energy-and-minerals-science-center"
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"name": "Pawlewicz, Mark J. pawlewicz@usgs.gov",
"givenName": "Mark J.",
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"affiliation": [
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"name": "Central Energy Resources Science Center",
"url": "https://www.usgs.gov/centers/central-energy-resources-science-center"
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"name": "Lillis, Paul G. plillis@usgs.gov",
"givenName": "Paul G.",
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"name": "Jarvie, Daniel M.",
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"familyName": "Jarvie"
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"name": "Harris, David C.",
"givenName": "David C.",
"familyName": "Harris"
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"name": "Gerome, Paul",
"givenName": "Paul",
"familyName": "Gerome"
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"name": "Hainsworth, Timothy J.",
"givenName": "Timothy J.",
"familyName": "Hainsworth"
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"name": "Ryder, Robert T.",
"givenName": "Robert T.",
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"editor": [
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"name": "Ruppert, Leslie F. lruppert@usgs.gov",
"givenName": "Leslie F.",
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"name": "Ryder, Robert T.",
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