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Person

Thomas A Oliver

Chemist
Email: taoliver@usgs.gov
Office Phone: 303-236-7888
Fax: 303-236-4930
ORCID: 0000-0002-6455-1114

Location
Box 25046
Denver Federal Center
Denver , CO 80225-0046
US
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In 2020, the U.S. Geological Survey (USGS) assessed the potential for undiscovered, technically recoverable continuous (unconventional) oil and gas resources in the Mowry Shale in the Wind River Basin Province (Finn and others, 2021). To better characterize the source rock potential of the Mowry Shale and associated strata, 129 samples were collected from 45 wells from the well cuttings collection stored at the USGS Core Research Center in Lakewood, Colorado. The sampled wells are located along the margins of the basin in order to obtain samples that were not subjected to the effects of deep burial and subsequent organic carbon loss due to thermal maturation (Daly and Edman, 1987) (fig. 1). One hundred samples are...
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The Upper Cretaceous Eagle Ford Group in southwest Texas represents a geologic record of the Cenomanian-Turonian period in the southern Western Interior Seaway (WIS) of North America prior to and during the Oceanic Anoxic Event 2 (OAE-2). Geochemical data generated and compiled here were collected on core samples taken from a wellbore near Del Rio, TX for the purpose of better characterizing the properties and variability within the Eagle Ford Group, an important and prolific petroleum source rock unit. The data have been integrated with sedimentological observations to characterize paleoenvironmental conditions at the southern WIS before and during OAE-2 (French et al., 2024).
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In 2019 the U.S. Geological Survey (USGS) quantitively assessed the potential for undiscovered, technically recoverable continuous (unconventional) oil and gas resources in the Niobrara interval of the Cody Shale in the Bighorn Basin Province (Finn and others, 2019). Leading up to the assessment, in 2017, the USGS collected samples from the Niobrara and underlying Sage Breaks intervals (Finn, 2019) to better characterize the source rock potential of the Niobrara interval. Eighty-two samples from 31 wells were collected from the well cuttings collection stored at the USGS Core Research Center in Lakewood, Colorado. The selected wells are located near the outcrop belt along the shallow margins of the basin to obtain...
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This Data Release contains data associated with the journal article "Geochemistry of the Cretaceous Mowry Shale in the Wind River Basin, Wyoming". Data include bulk organic geochemistry, major and trace element geochemistry, mineralogy, extractable organic matter composition, extractable biomarkers, and organic stable carbon isotope analyses.
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The informal Uteland Butte member of the Eocene Green River Formation in the Uinta Basin, Utah is one of the few examples of a continuous petroleum resource play in the world situated in a lacustrine sedimentary basin (Johnson and others, 2015; Birdwell and others, 2016). The datasets compiled here were collected on outcrop samples of the Uteland Butte member with the purpose of better characterizing the geochemical and mineralogical properties and variability through this unit, which represents a period of freshwater conditions in Eocene Lake Uinta in the Uinta Basin. The data have been integrated with outcrop descriptions, geophysical (gamma ray) logs, and interpretations of depositional conditions across geographic...
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