Results 1 to 10 of about 658,079 (225)

Social Vulnerability and Groundwater Vulnerability to Contamination From Unconventional Hydrocarbon Extraction in the Appalachian Basin [PDF]

open access: yesGeoHealth, 2023
Unconventional oil and gas (UOG) development, made possible by horizontal drilling and high‐volume hydraulic fracturing, has been fraught with controversy since the industry's rapid expansion in the early 2000's.
Mario A. Soriano Jr.   +6 more
doaj   +2 more sources

Members of Marinobacter and Arcobacter Influence System Biogeochemistry During Early Production of Hydraulically Fractured Natural Gas Wells in the Appalachian Basin [PDF]

open access: yesFrontiers in Microbiology, 2018
Hydraulic fracturing is the prevailing method for enhancing recovery of hydrocarbon resources from unconventional shale formations, yet little is understood regarding the microbial impact on biogeochemical cycling in natural-gas wells.
Morgan V. Evans   +13 more
doaj   +2 more sources

Implementing Large-Scale CCS in Complex Geologic Reservoirs: Insights from Three Appalachian Basin Case Studies

open access: yesEnergies
This paper presents three design case studies for implementing large-scale geologic carbon storage in the Appalachian Basin region of the midwestern United States.
Joel Sminchak
exaly   +3 more sources

Influence of Organic Matter Thermal Maturity on Rare Earth Element Distribution: A Study of Middle Devonian Black Shales from the Appalachian Basin, USA

open access: yesEnergies
This study focuses on understanding the association of rare earth elements (REE; lanthanides + yttrium + scandium) with organic matter from the Middle Devonian black shales of the Appalachian Basin.
Vikas Agrawal   +2 more
exaly   +3 more sources

Tectonic, foreland-basin origins of Upper Ordovician black gas shales in the Appalachian Basin of eastern United States [PDF]

open access: yesEstonian Journal of Earth Sciences, 2023
Black gas shales are major parts of many foreland-basin sequences and comprise important components of unconformity-bound tectophase cycles, which reflect sedimentary/stratigraphic, flexural responses to deformational loading and relaxation in an orogen.
Frank R. Ettensohn, Gustavo Martins
doaj   +1 more source

The late Katian Elkhorn event: precursor to the Late Ordovician mass extinction [PDF]

open access: yesEstonian Journal of Earth Sciences, 2023
The late Katian Elkhorn event is a biogeochemical perturbation preceding the Late Ordovician mass extinction (LOME) with an exceptional record in the United States (U.S.).
Patrick I. McLaughlin   +8 more
doaj   +1 more source

Age of the basement beneath the Mesozoic Lusitanian Basin revealed by granitic xenoliths from the Papôa volcanic breccia (West Iberia)

open access: yesGeologica Acta, 2020
The dyke of the Papôa volcanic breccia cross-cutting the Lower Jurassic sequence of the Lusitanian Basin (West Iberia) contains granitic xenoliths. In this study, for the first time, U-Th-Pb zircon analysis of two xenoliths yielded 298±4Ma for biotite ...
M.F. Pereira   +3 more
doaj   +3 more sources

Upper Ordovician chronostratigraphic correlation between the Appalachian and Midcontinent basins [PDF]

open access: yesEstonian Journal of Earth Sciences, 2023
Study of a subsurface core (named F688) from northern Indiana provides integrated data sets linking Katian chronostratigraphic records of the Appalachian and Midcontinent basins.
Cristiana J. P. Esteves   +7 more
doaj   +1 more source

Organic-walled tentaculids of Late Devonian (Frasnian) deposits of the Appalachian and Michigan Basins, Laurussia (NY, MI, OH)

open access: yesGeologica Acta, 2022
This is the first report of organic-walled tentaculid remains from Givetian through Frasnian age deposits of the Michigan and Appalachian Basins in western Laurussia.
Kimberly C. Meehan, James T. Boyle
doaj   +1 more source

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