V12B:
Crustal Formation, Fluid–Rock Reactions, and Subsurface Microbial Communities in the Samail Ophiolite: Results from the Oman Drilling Project and Related Research


Submit an Abstract to this Session


Session ID#: 63833

Session Description:
The Oman Drilling Project (2016-2018) has obtained 1200 m of diamond drillcore from three boreholes in oceanic crust, 300 m from one hole at the base of the mantle section into the underlying metamorphic sole, 700 m from two holes in the crust-mantle transition zone, and 1000 m from three holes in partially serpentinized peridotite undergoing active alteration. Seven rotary holes for future water sampling and microbiological, geophysical and hydrological experiments, have been drilled in the crust-mantle transition zone and in altered peridotite. Most holes have been geophysically logged. IODP standard core description onboard the DV Chikyu has been supplemented with X-Ray CT and high resolution infrared scanning of the entire core, and XRF scanning of selected sections. This session will present new results from drilling, geophysical logging, and core analysis, as well as related research in the Samail ophiolite, and the oceanic lithosphere in general.
Primary Convener:  Damon A H Teagle, University of Southampton, School of Ocean and Earth Science, Southampton, United Kingdom
Conveners:  Juerg Michael Matter, University of Southampton, School of Ocean and Earth Science, Southampton, United Kingdom, Peter B Kelemen, Lamont-Doherty Earth Observatory, Palisades, NY, United States and Alexis S Templeton, University of Colorado, Boulder, Geological Sciences, Boulder, United States
Primary Liaison:  Damon A H Teagle, University of Southampton, School of Ocean and Earth Science, Southampton, United Kingdom
Chairs:  Damon A H Teagle1, Juerg Michael Matter1, Peter B Kelemen2 and Alexis S Templeton3, (1)University of Southampton, School of Ocean and Earth Science, Southampton, United Kingdom(2)Lamont-Doherty Earth Observatory, Palisades, NY, United States(3)University of Colorado, Boulder, Geological Sciences, Boulder, United States
OSPA Liaison:  Damon A H Teagle, University of Southampton, School of Ocean and Earth Science, Southampton, United Kingdom
Co-Organized with:
Volcanology, Geochemistry and Petrology, and Tectonophysics

Cross-Listed:
  • B - Biogeosciences
  • T - Tectonophysics

Proposed Co-Organized Session with:
  • B - Biogeosciences
  • T - Tectonophysics
Index Terms:

0456 Life in extreme environments [BIOGEOSCIENCES]
8140 Ophiolites [TECTONOPHYSICS]
8416 Mid-oceanic ridge processes [VOLCANOLOGY]
8424 Hydrothermal systems [VOLCANOLOGY]

Abstracts Submitted to this Session:

Brucite as an Important Sink and Source of Fe(II) During Low-Temperature Serpentinization (473493)
Eric T Ellison, University of Colorado at Boulder, Geological Sciences, Boulder, CO, United States, Alexis S Templeton, University of Colorado, Boulder, Geological Sciences, Boulder, United States, Lisa E Mayhew, University of Colorado, Department of Geological Sciences, Boulder, United States, Spencer D. Zeigler, University of Colorado Boulder, Department of Geological Sciences, Boulder, CO, United States and Oman Drilling Project Phase II Science Team
Subsurface Cycling of Nitrogen in the Actively Serpentinizing Samail Ophiolite, Oman (473658)
Kaitlin R. Rempfert1, Saroj Poudel2, Emily Antoinette Kraus3, John R Spear3, Eric S Boyd4, Juerg Michael Matter5, Sebastian Kopf1 and Alexis S Templeton6, (1)University of Colorado at Boulder, Geological Sciences, Boulder, CO, United States, (2)Montana State University, Department of Microbiology and Immunology, Bozeman, MT, United States, (3)Colorado School of Mines, Civil and Environmental Engineering, Golden, CO, United States, (4)Montana State University, Department of Microbiology and Cell Biology, Bozeman, MT, United States, (5)University of Southampton, School of Ocean and Earth Science, Southampton, United Kingdom, (6)University of Colorado, Boulder, Geological Sciences, Boulder, United States

See more of: Volcanology, Geochemistry and Petrology