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

Phan, Thai T.; Gardiner, James B.; Capo, Rosemary C.; Stewart, Brian W.

doi:10.1016/j.gca.2017.10.021

Title: 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

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Abstract

Here, 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 contents, rare earth elements (REE), the Sm-Nd and Rb-Sr isotope systems, and U isotopes were applied to whole rock digestions and sequentially extracted fractions of the Marcellus shale and adjacent units from two locations in the Appalachian Basin. The narrow range of εNd values (from –7.8 to –6.4 at 390 Ma) is consistent with derivation of the clastic sedimentary component of the Marcellus Shale from a well-mixed source of fluvial and eolian material of the Grenville orogenic belt, and indicate minimal post-depositional alteration of the Sm-Nd system. While silicate minerals host >80% of the REE in the shale, data from sequentially extracted fractions reflect post-depositional modifications at the mineralogical scale, which is not observed in whole rock REE patterns.

Authors:

Phan, Thai T. ^[1]; Gardiner, James B. ^[1]; Capo, Rosemary C. ^[2]; Stewart, Brian W. ^[2]

Univ. of Pittsburgh, Pittsburgh, PA (United States); National Energy Technology Lab. (NETL), Pittsburgh, PA, (United States)
Univ. of Pittsburgh, Pittsburgh, PA (United States)

Publication Date:: Wed Oct 25 00:00:00 EDT 2017

Research Org.:: National Energy Technology Lab. (NETL), Pittsburgh, PA, (United States)

Sponsoring Org.:: USDOE Office of Fossil Energy (FE); USDOE Office of Fossil Energy and Carbon Management (FECM)

OSTI Identifier:: 1457133

Alternate Identifier(s):: OSTI ID: 1577200

Report Number(s):: NETL-PUB-20701
Journal ID: ISSN 0016-7037; PII: S0016703717306841; TRN: US1901301

Grant/Contract Number:: FE0004000

Resource Type:: Accepted Manuscript

Journal Name:: Geochimica et Cosmochimica Acta

Additional Journal Information:: Journal Volume: 222; Journal Issue: C; Journal ID: ISSN 0016-7037

Publisher:: The Geochemical Society; The Meteoritical Society

Country of Publication:: United States

Language:: English

Subject:: 58 GEOSCIENCES; Uranium isotopes; Neodymium isotopes; Radiogenic strontium isotopes; Rare earth elements; Redox; Carbonate diagenesis; Marcellus shale

Citation Formats


                    Phan, Thai T., Gardiner, James B., Capo, Rosemary C., and Stewart, Brian W. 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.  United States: N. p., 2017. 
Web.  doi:10.1016/j.gca.2017.10.021.

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                    Phan, Thai T., Gardiner, James B., Capo, Rosemary C., & Stewart, Brian W. 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.  United States.  https://doi.org/10.1016/j.gca.2017.10.021

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                    Phan, Thai T., Gardiner, James B., Capo, Rosemary C., and Stewart, Brian W. Wed .  
"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".  United States.  https://doi.org/10.1016/j.gca.2017.10.021.  https://www.osti.gov/servlets/purl/1457133.

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@article{osti_1457133,

  title        = {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},

  author       = {Phan, Thai T. and Gardiner, James B. and Capo, Rosemary C. and Stewart, Brian W.},

  abstractNote = {Here, 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 contents, rare earth elements (REE), the Sm-Nd and Rb-Sr isotope systems, and U isotopes were applied to whole rock digestions and sequentially extracted fractions of the Marcellus shale and adjacent units from two locations in the Appalachian Basin. The narrow range of εNd values (from –7.8 to –6.4 at 390 Ma) is consistent with derivation of the clastic sedimentary component of the Marcellus Shale from a well-mixed source of fluvial and eolian material of the Grenville orogenic belt, and indicate minimal post-depositional alteration of the Sm-Nd system. While silicate minerals host >80% of the REE in the shale, data from sequentially extracted fractions reflect post-depositional modifications at the mineralogical scale, which is not observed in whole rock REE patterns.},

  doi          = {10.1016/j.gca.2017.10.021},

  journal      = {Geochimica et Cosmochimica Acta},

  number       = C,

  volume       = 222,

  place        = {United States},

  year         = {Wed Oct 25 00:00:00 EDT 2017},

  month        = {Wed Oct 25 00:00:00 EDT 2017}

}

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Title: 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

Abstract

Citation Formats

Title: 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