Výsledky vyhledávání - "Brian W. Stewart"

Barium Isotopes Track the Source of Dissolved Solids in Produced Water from the Unconventional Marcellus Shale Gas Play

Autor: Rosemary C. Capo, Thai T. Phan, Christina L. Lopano, Zachary G. Tieman, Brian W. Stewart, J. Alexandra Hakala

Publikováno v: Environmental Science & Technology. 54:4275-4285

Waters coproduced with hydrocarbons from unconventional oil and gas reservoirs such as the hydraulically fractured Middle Devonian Marcellus Shale in the Appalachian Basin, USA, contain high levels of total dissolved solids (TDS), including Ba, which

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2e5e75b47a75f1d72180a55a46b5b82c
https://doi.org/10.1021/acs.est.0c00102

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Neodymium isotopes track sources of rare earth elements in acidic mine waters

Autor: Irene L.R. Wallrich, Rosemary C. Capo, Brian W. Stewart, Benjamin C. Hedin, Thai T. Phan

Publikováno v: Geochimica et Cosmochimica Acta. 269:465-483

Acid mine drainage (AMD) has been proposed as a potential source of strategic rare earth elements (REEs) due to its high concentrations (>1000 µg/L) of dissolved REEs, as well as the middle rare earth element (MREE) enriched pattern exhibited by bot

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1547830cd163d70d3f65c5111522452f
https://doi.org/10.1016/j.gca.2019.10.044

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A single column separation method for barium isotope analysis of geologic and hydrologic materials with complex matrices

Autor: J. A. Hakala, R. L. Thompson, R. M. Matecha, Rosemary C. Capo, Brian W. Stewart

Publikováno v: Geochemical Transactions
Geochemical Transactions, Vol 22, Iss 1, Pp 1-9 (2021)

The increasing significance of barium (Ba) in environmental and geologic research in recent years has led to interest in the application of the Ba isotopic composition as a tracer for natural materials with complex matrices. Most Ba isotope measureme

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3101fb5bafb12f27c723da4e3abbc346
http://europepmc.org/articles/PMC8359043

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Evidence of SPICE-related anoxia on the Laurentian passive margin: Paired δ13C and trace element chemostratigraphy of the upper Conasauga Group, Central Appalachian Basin

Autor: Justin Mackey, Brian W. Stewart

Publikováno v: Palaeogeography, Palaeoclimatology, Palaeoecology. 528:160-174

This study reports data from the Upper Cambrian Conasauga Group and overlying Copper Ridge Formation of the Central Appalachian region, eastern U.S.A. Geochemical, isotopic and petrographic analysis of core material was carried out to constrain the e

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::246147bcd1ec8bbc930fcee68a7a5d88
https://doi.org/10.1016/j.palaeo.2019.04.018

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The evaluation of critical rare earth element (REE) enriched treatment solids from coal mine drainage passive treatment systems

Autor: Brian W. Stewart, Mengling Stuckman, Benjamin C. Hedin, Robert S. Hedin, Rosemary C. Capo, Christina L. Lopano

Publikováno v: International Journal of Coal Geology. 208:54-64

Rare earth elements (REE; lanthanides and Y) are essential for the development of clean energy technologies. Global demand for REE is expected to increase sharply in the coming decades, especially for certain energy-critical REE (e.g., Y and Nd), spu

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::12555241c3454474755b7171e52569af
https://doi.org/10.1016/j.coal.2019.04.007

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Geochemical and multi-isotopic (87Sr/86Sr, 143Nd/144Nd, 238U/235U) perspectives of sediment sources, depositional conditions, and diagenesis of the Marcellus Shale, Appalachian Basin, USA

Autor: James Gardiner, Thai T. Phan, Rosemary C. Capo, Brian W. Stewart

Publikováno v: Geochimica et Cosmochimica Acta. 222:187-211

We investigate sediment sources, depositional conditions and diagenetic processes affecting the Middle Devonian Marcellus Shale in the Appalachian Basin, eastern USA, a major target of natural gas exploration. Multiple proxies, including trace metal

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9f4f50e2d2131e2601fa36a24004b9dd
https://doi.org/10.1016/j.gca.2017.10.021

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Geochemical and lithium isotope tracking of dissolved solid sources in Permian Basin carbonate reservoir and overlying aquifer waters at an enhanced oil recovery site, northwest Texas, USA

Autor: James Gardiner, J. Rodney Diehl, J. Alexandra Hakala, Rosemary C. Capo, Thai T. Phan, Brian W. Stewart, Samantha Pfister, Christina L. Lopano, G.L. Macpherson

Publikováno v: Applied Geochemistry. 87:122-135

Geochemistry and lithium isotope compositions (δ7Li) of Permian Basin produced water and potable groundwater from overlying aquifers at an enhanced oil recovery (EOR) site in Gaines County, northwest Texas, are used to evaluate the effects of brine-

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f95c01bccb1258bb7d30349be6a033c1
https://doi.org/10.1016/j.apgeochem.2017.10.013

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