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Rempfert KR, Miller HM, Bompard N, et al. Geological and Geochemical Controls on Subsurface Microbial Life in the Samail Ophiolite, Oman. Front Microbiol. 2017;8:56doi: 10.3389/fmicb.2017.00056.
Rempfert, K. R., Miller, H. M., Bompard, N., Nothaft, D., Matter, J. M., Kelemen, P., Fierer, N., & Templeton, A. S. (2017). Geological and Geochemical Controls on Subsurface Microbial Life in the Samail Ophiolite, Oman. Frontiers in microbiology, 856. https://doi.org/10.3389/fmicb.2017.00056
Rempfert, Kaitlin R, et al. "Geological and Geochemical Controls on Subsurface Microbial Life in the Samail Ophiolite, Oman." Frontiers in microbiology vol. 8 (2017): 56. doi: https://doi.org/10.3389/fmicb.2017.00056
Rempfert KR, Miller HM, Bompard N, Nothaft D, Matter JM, Kelemen P, Fierer N, Templeton AS. Geological and Geochemical Controls on Subsurface Microbial Life in the Samail Ophiolite, Oman. Front Microbiol. 2017 Feb 07;8:56. doi: 10.3389/fmicb.2017.00056. eCollection 2017. PMID: 28223966; PMCID: PMC5293757.
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Front Microbiol. 2017 Feb 07;8:56. doi: 10.3389/fmicb.2017.00056. eCollection 2017.

Geological and Geochemical Controls on Subsurface Microbial Life in the Samail Ophiolite, Oman.

Frontiers in microbiology

Kaitlin R Rempfert, Hannah M Miller, Nicolas Bompard, Daniel Nothaft, Juerg M Matter, Peter Kelemen, Noah Fierer, Alexis S Templeton

Affiliations

  1. Department of Geological Sciences, University of Colorado Boulder, CO, USA.
  2. National Oceanography Centre, University of Southampton Southampton, UK.
  3. Lamont-Doherty Earth Observatory, Columbia University Palisades, NY, USA.
  4. Cooperate Institute for Research in Environmental Sciences, University of ColoradoBoulder, CO, USA; Department of Ecology and Evolutionary Biology, University of ColoradoBoulder, CO, USA.

PMID: 28223966 PMCID: PMC5293757 DOI: 10.3389/fmicb.2017.00056

Abstract

Microbial abundance and diversity in deep subsurface environments is dependent upon the availability of energy and carbon. However, supplies of oxidants and reductants capable of sustaining life within mafic and ultramafic continental aquifers undergoing low-temperature water-rock reaction are relatively unknown. We conducted an extensive analysis of the geochemistry and microbial communities recovered from fluids sampled from boreholes hosted in peridotite and gabbro in the Tayin block of the Samail Ophiolite in the Sultanate of Oman. The geochemical compositions of subsurface fluids in the ophiolite are highly variable, reflecting differences in host rock composition and the extent of fluid-rock interaction. Principal component analysis of fluid geochemistry and geologic context indicate the presence of at least four fluid types in the Samail Ophiolite ("gabbro," "alkaline peridotite," "hyperalkaline peridotite," and "gabbro/peridotite contact") that vary strongly in pH and the concentrations of H

Keywords: Samail Ophiolite; deep subsurface biosphere; gabbro; hyperalkaline; peridotite; serpentinization; water-rock interactions

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