Item talk:Q62846

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     "name": "Constraining the age and magnitude of uplift in the northern National Petroleum Reserve in Alaska (NPRA): Apatite fission-track analysis of samples from three wells",
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         "value": "pp1784A",
         "url": "https://pubs.usgs.gov/publication/pp1784A"
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         "value": 70005116
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         "value": "10.3133/pp1784A",
         "url": "https://doi.org/10.3133/pp1784A"
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     "datePublished": "2011",
     "dateModified": "2024-01-11",
     "abstract": "A broad, post-mid-Cretaceous uplift is defined in the northern National Petroleum Reserve in Alaska (NPRA) by regional truncation of Cretaceous strata, thermal maturity patterns, and amounts of exhumation estimated from sonic logs. Apatite fission-track (AFT) analysis of samples from three wells (South Meade No. 1, Topagoruk No. 1, and Ikpikpuk No. 1) across the eastern flank of the uplift indicates Tertiary cooling followed by Quaternary heating.Results from all three wells indicate that cooling, presumably caused by uplift and erosion, started about 75\u201365 Ma (latest Cretaceous\u2013earliest Tertiary) and continued through the Tertiary Period. Data from South Meade indicate more rapid cooling after about 35\u201315 Ma (latest Eocene\u2013middle Miocene) followed by a significant increase in subsurface temperature during the Quaternary, probably the result of increased heat flow. Data from Topagoruk and Ikpikpuk include subtle evidence of accelerated cooling starting in the latest Eocene\u2013middle Miocene and possible evidence of increased temperature during the Quaternary. Subsurface temperature perturbations related to the insulating effect of permafrost may have been responsible for the Quaternary temperature increase at Topagoruk and Ikpikpuk and may have been a contributing factor at South Meade.Multiple lines of geologic evidence suggest that the magnitude of exhumation resulting from uplift and erosion is 5,000\u20136,500 ft at South Meade, 4,000\u20135,500 ft at Topagoruk, and 2,500\u20134,000 ft at Ikpikpuk. The results from these wells help to define the broad geometry of the uplift, which increases in magnitude from less than 1,000 ft at the Colville River delta to perhaps more than 7,000 ft along the northwestern coast of NPRA, between Point Barrow and Peard Bay. Neither the origin nor the offshore extent of the uplift, west and north of the NPRA coast, have been determined.",
     "description": "Report: iii, 22 p.; 1 Plate: 36.00 x 52.00 inches",
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       "@type": "Organization",
       "name": "U.S. Geological Survey"
     },
     "author": [
       {
         "@type": "Person",
         "name": "Houseknecht, David W. dhouse@usgs.gov",
         "givenName": "David W.",
         "familyName": "Houseknecht",
         "email": "dhouse@usgs.gov",
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             "@type": "Organization",
             "name": "Eastern Energy Resources Science Center",
             "url": "https://www.usgs.gov/centers/geology-energy-and-minerals-science-center"
           }
         ]
       },
       {
         "@type": "Person",
         "name": "Bird, Kenneth J. kbird@usgs.gov",
         "givenName": "Kenneth J.",
         "familyName": "Bird",
         "email": "kbird@usgs.gov",
         "affiliation": [
           {
             "@type": "Organization",
             "name": "Energy Resources Program",
             "url": "https://www.usgs.gov/programs/energy-resources-program"
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       },
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         "@type": "Person",
         "name": "O'Sullivan, Paul",
         "givenName": "Paul",
         "familyName": "O'Sullivan"
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     "funder": [
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         "@type": "Organization",
         "name": "Energy Resources Program",
         "url": "https://www.usgs.gov/programs/energy-resources-program"
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         "name": "Alaska"
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         "name": "National Petroleum Reserve"
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