Energy Resources Program

Publications

Filter Total Items: 2,531
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Year Published: 2021

Geologic and geophysical maps of the Santa Maria and part of the Point Conception 30'×60' quadrangles, California

This report presents digital geologic, gravity, and aeromagnetic maps for the onshore parts of the Santa Maria and Point Conception 30'x60' quadrangles at a compilation scale of 1:100,000. The map depicts the distribution of bedrock units, surficial deposits, paleontological data, geophysical data and structural features in the Santa Maria basin...

Sweetkind, Donald S.; Langenheim, Victoria E.; McDougall-Reid, Kristin; Sorlien, Christopher C.; Demas, Shiera C.; Tennyson, Marilyn E.; Johnson, Samuel Y.
Sweetkind, D.S., Langenheim, V.E., McDougall-Reid, K., Sorlien, C.C., Demas, S.C., Tennyson, M.E., and Johnson, S.Y., 2021, Geologic and geophysical maps of the Santa Maria and part of the Point Conception 30'×60' quadrangles, California: U.S. Geological Survey Scientific Investigations Map 3472, 1 sheet, scale 1:100,000, 58-p. pamphlet, https://doi.org/10.3133/sim3472. [Supersedes USGS Open-File Reports 95–25 and 92–189.]

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Year Published: 2021

Stratigraphic cross sections of the Mowry Shale and associated strata in the Wind River Basin, Wyoming

The Wind River Basin in Wyoming is one of many structural and sedimentary basins that formed in the Rocky Mountain foreland during the Laramide orogeny in the latest Cretaceous through the early Eocene. The basin (bounded by the Washakie, Owl Creek, and Bighorn uplifts on the north, the Casper arch on the east, the Granite Mountains uplift on the...

Finn, Thomas M.
Finn, T.M., 2021, Stratigraphic cross sections of the Mowry Shale and associated strata in the Wind River Basin, Wyoming: U.S. Geological Survey Scientific Investigations Map 3476, 1 sheet,14-p. pamphlet, https://doi.org/10.3133/sim3476.

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Year Published: 2021

Water–rock interaction and the concentrations of major, trace, and rare earth elements in hydrocarbon-associated produced waters of the United States

Studies of co-produced waters from hydrocarbon extraction across multiple energy-producing basins have generally focused on major ions or a few select tracers, and studies that examine trace elements and involve laboratory experiments have generally been basin specific. Here, new perspective is sought through a broad analysis of concentration data...

Bern, Carleton R.; Birdwell, Justin E.; Jubb, Aaron M.

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Year Published: 2021

Carotenoid biomarkers in Namibian shelf sediments: Anoxygenic photosynthesis during sulfide eruptions in the Benguela Upwelling System

Anoxygenic photosynthesis by phototrophic sulfur bacteria is prevalent in microbial mat ecosystems and in restricted, highly stratified aquatic environments. This limited distribution reflects their simultaneous requirements for an anoxic habitat, reduced sulfur to supply electrons for carbon fixation, and an appropriate light regime. Although...

Ma, Jian; French, Katherine L.; Cui, Xingqian; Bryant, Donald; Summons, Roger

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Year Published: 2021

Using fission-track radiography coupled with scanning electron microscopy for efficient identification of solid-phase uranium mineralogy at a former uranium pilot mill (Grand Junction, Colorado)

At a former uranium pilot mill in Grand Junction, Colorado, mine tailings and some subpile sediments were excavated to various depths to meet surface radiological standards, but residual solid-phase uranium below these excavation depths still occurs at concentrations above background. The combination of fission-track radiography and scanning...

Johnson, Raymond H.; Hall, Susan; Tigar, Aaron

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Year Published: 2021

Assessment of undiscovered conventional oil and gas resources in the eastern Mediterranean area, 2020

Using a geology-based assessment methodology, the U.S. Geological Survey estimated undiscovered, technically recoverable mean resources of 879 million barrels of conventional oil and 286.2 trillion cubic feet of conventional gas in the eastern Mediterranean area.

Schenk, Christopher J.; Mercier, Tracey J.; Finn, Thomas M.; Woodall, Cheryl A.; Marra, Kristen R.; Leathers-Miller, Heidi M.; Le, Phuong A.; Drake, Ronald M.
Schenk, C.J., Mercier, T.J., Finn, T.M., Woodall, C.A., Marra, K.R., Leathers-Miller, H.M., Le, P.A., and Drake, R.M., II, 2021, Assessment of undiscovered conventional oil and gas resources in the eastern Mediterranean area, 2020 (ver. 1.1): U.S. Geological Survey Fact Sheet 2021−3032, 4 p., https://doi.org/10.3133/fs20213032.

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Year Published: 2021

Insights on geochemical, isotopic, and volumetric compositions of produced water from hydraulically fractured Williston Basin oil wells

Tracing produced water origins from wells hydraulically fractured with freshwater-based fluids is sometimes predicated on assumptions that (1) each geological formation contains compositionally unique brine and (2) produced water from recently hydraulically fractured wells resembles fresher meteoric water more so than produced water from older...

Gallegos, Tanya J.; Doolan, Colin A.; Caldwell, Rodney R.; Engle, Mark A; Varonka, Matthew S.; Birdwell, Justin E.; Jolly, Glenn D.; Coplen, Tyler B.; Oliver, Thomas A.

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Year Published: 2021

Probabilistic methodology for the assessment of original and recoverable coal resources, illustrated with an application to a coal bed in the Fort Union Formation, Wyoming

Executive SummaryThe U.S. Geological Survey (USGS) has been using its Circular 891 for evaluating uncertainty in coal resource assessments for more than 35 years. Calculated cell tonnages are assigned to four qualitative reliability classes depending exclusively on distance to the nearest drill hole. The main appeal of this methodology, simplicity...

Olea, Ricardo A.; Shaffer, Brian N.; Haacke, Jon E.; Luppens, James A.
Olea, R.A., Shaffer, B.N., Haacke, J.E., and Luppens, J.A., 2021, Probabilistic methodology for the assessment of original and recoverable coal resources, illustrated with an application to a coal bed in the Fort Union Formation, Wyoming: U.S. Geological Survey Techniques and Methods 6-G1, 55 p., https://doi.org/10.3133/tm6G1.

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Year Published: 2021

Surface-mining modeling for USGS coal assessments

The value of national coal deposits is determined for the Solid Fuel Energy Resources Assessment and Research Project through economic evaluations using hypothetical mining models. Deposits near the surface are evaluated with the U.S. Geological Survey (USGS) surface-mining model, which is patterned after the standard mining techniques and...

Pierce, Paul E.
Pierce, P.E., 2021, Surface-mining modeling for USGS coal assessments: U.S. Geological Survey Open-File Report 2021–1059, 13 p., https://doi.org/10.3133/ofr20211059.

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Year Published: 2021

Multivariate classification of the crude oil petroleum systems in southeast Texas, USA, using conventional and compositional data analysis of biomarkers

Chemically, petroleum is an extraordinarily complex mixture of different types of hydrocarbons that are now possible to isolate and identify because of advances in geochemistry. Here, we use biomarkers and carbon isotopes to establish genetic differences and similarities among oil samples. Conventional approaches for evaluating biomarker and...

Fitzmoser, Peter; Hron, Karel; Martin-Fernandez, Josep Antoni; Palarea-Albaladejo, Javier; Olea, Ricardo; Martin-Fernandez, J. A; Craddock, William H.

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Year Published: 2021

Relating Tmax and hydrogen index to vitrinite and solid bitumen reflectance in hydrous pyrolysis residues: Comparisons to natural thermal indices

Vitrinite reflectance (VRo; %) generally is considered the most reliable technique to determine the thermal maturity of sedimentary rocks. However, it is a time-consuming process to collect reflectance (Ro; %) measurements and is subjective to the interpretation of each trained technician, who must be able to discern between ...

Lohr, Celeste D.; Hackley, Paul C.

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Year Published: 2021

Insights on the characteristics and sources of gas from an underground coal mine using compositional data analysis

Coal mine gas originates from the gas emission zone (GEZ) of the mine, as well as the longwall face and pillars. Gas emissions are controlled directly at the sources using horizontal or vertical boreholes drilled from surface or from the entries in advance of mining, or it is captured from the fractured and caved zones (gob) using...

Karacan, C. Özgen; Martín-Fernández, Josep Antoni; Ruppert, Leslie F.; Olea, Ricardo