Lorenson, Thomas D. et al. (2005): Acetate and hydrogen concentration in pore fluids associated with a large gas hydrate reservoir, southern Hydrate Ridge, offshore Oregon, USA
Leg/Site/Hole:
Related Expeditions:
ODP 204
Identifier:
ID:
2007-035105
Type:
georefid
ID:
10.2973/odp.proc.sr.204.126.2006
Type:
doi
Creator:
Name:
Lorenson, Thomas D.
Affiliation:
U. S. Geological Survey, Menlo Park, CA, United States
Role:
author
Name:
Colwell, Frederick S.
Affiliation:
Christian-Albrechts-Universitaet zu Kiel, Federal Republic of Germany
Role:
author
Name:
Delwiche, Mark E.
Affiliation:
Joint Oceanographic Institutions, United States
Role:
author
Name:
Dougherty, Jennifer A.
Affiliation:
University of Texas at Austin, United States
Role:
author
Identification:
Title:
Acetate and hydrogen concentration in pore fluids associated with a large gas hydrate reservoir, southern Hydrate Ridge, offshore Oregon, USA
Year:
2005
Source:
In: Trehu, Anne M., Bohrmann, Gerhard, Torres, Marta E., Rack, Frank R., Bangs, Nathan L., Barr, Samantha R., Borowski, Walter S., Claypool, George E., Collett, Timothy S., Delwiche, Mark E., Dickens, Gerald R., Goldberg, David S., Gracia, Eulalia, Guerin, Gilles, Holland, Melanie, Johnson, Joel E., Lee, Young-Joo, Liu, Char-Shine, Long, Philip E., Milkov, Alexei V., Riedel, Michael, Schultheiss, Peter, Su Xin, Teichert, Barbara, Tomaru, Hitoshi, Vanneste, Maarten, Watanabe, Mahito, Weinberger, Jill L., Boetius, Antje, Brockman, Fred J., Deyhle, Annette, Fehn, Udo, Flemings, Peter B., Girguis, Peter R., Heesemann, Martin, Joye, Samantha B., Lorenson, Thomas D., Mills, Christopher T., Musgrave, Robert J., Popa, Radu, Ussler, Bill, Wilkes, Heinz, Winckler, Gisela, Winters, William J., Proceedings of the Ocean Drilling Program; scientific results; drilling gas hydrates on Hydrate Ridge, Cascadia continental margin; covering Leg 204 of the cruises of the drilling vessel JOIDES Resolution; Victoria, British Columbia, Canada, to Victoria, British Columbia, Canada; Sites 1244-1252; 7 July-2 September 2002
Publisher:
Texas A&M University, Ocean Drilling Program, College Station, TX, United States
Volume:
204
Issue:
Pages:
Abstract:
Acetate and hydrogen concentrations in pore fluids were measured in samples taken at seven sites from southern Hydrate Ridge (SHR) offshore Oregon, USA. Acetate concentrations ranged from 3.17 to 2515 mu M. The maximum acetate concentrations occurred at Site 1251, which was drilled on a slope basin to the east of SHR at depths just above the bottom- simulating reflector (BSR) that marks the boundary of gas hydrate stability. Acetate maxima and localized high acetate concentrations occurred at the BSR at all sites and frequently corresponded with areas of gas hydrate accumulation, suggesting an empirical relationship. Acetate concentrations were typically at a minimum near the seafloor and above the sulfate/methane interface, where sulfate-reducing bacteria may consume acetate. Hydrogen concentrations in pressure core samples ranged from 16.45 to 1036 parts per million by volume (ppmv). In some cases, hydrogen and acetate concentrations were elevated concurrently, suggesting a positive correlation. However, sampling of hydrogen was limited in comparison to acetate, so any relationships between the two analytes, if present, were difficult to discern.
Language:
English
Genre:
Serial
Rights:
URL:
Coverage: Geographic coordinates: North:44.3500 West:-125.0900 East:
-125.0400 South:44.3400
Keywords: Oceanography; General geochemistry; acetates; bottom-simulating reflectors; Cascadia subduction zone; concentration; continental slope; East Pacific; esters; gas hydrates; geochemistry; geophysical methods; Hydrate Ridge; hydrochemistry; hydrogen; Leg 204; marine sediments; North Pacific; Northeast Pacific; Ocean Drilling Program; Oregon; organic compounds; Pacific Ocean; pore water; sediments; seismic methods; United States;
.