Larrasoana, Juan Cruz et al. (2005): Rock magnetic identification of magnetic iron sulfides and its bearing on the occurrence of gas hydrates, ODP Leg 204 (Hydrate Ridge)
Leg/Site/Hole:
Related Expeditions:
ODP 204
Identifier:
ID:
2007-035106
Type:
georefid
ID:
10.2973/odp.proc.sr.204.111.2006
Type:
doi
Creator:
Name:
Larrasoana, Juan Cruz
Affiliation:
Universidad de Zaragoza, Departamento de Ciencias de la Tierra, Saragossa, Spain
Role:
author
Name:
Gracia, Eulalia
Affiliation:
Christian-Albrechts-Universitaet zu Kiel, Federal Republic of Germany
Role:
author
Name:
Garces, Miguel
Affiliation:
Joint Oceanographic Institutions, United States
Role:
author
Name:
Musgrave, Robert J.
Affiliation:
University of Texas at Austin, United States
Role:
author
Name:
Pinero, Elena
Affiliation:
University of Leicester, United Kingdom
Role:
author
Name:
Martinez-Ruiz, Francisca
Affiliation:
Eastern Kentucky University, United States
Role:
author
Name:
Vega, Marta E.
Affiliation:
U. S. Geological Survey, United States
Role:
author
Identification:
Title:
Rock magnetic identification of magnetic iron sulfides and its bearing on the occurrence of gas hydrates, ODP Leg 204 (Hydrate Ridge)
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:
In this paper, we present a rock magnetic data set produced for sediments from Hydrate Ridge recovered during Ocean Drilling Program Leg 204. Our data set is based on several artificially induced magnetic properties that can be used as a diagnostic for the presence of magnetic iron sulfides. The occurrence of magnetic iron sulfides within the gas hydrate stability zone in locations where gas hydrates are present seems to confirm previous interpretations linking formation of such minerals with generation of gas hydrate. Magnetic iron sulfides are also found at positions deeper than the gas hydrate stability zone. We suggest that these positions, which include intervals located just below the bottom-simulating reflector and also at deeper positions, may mark the former presence of gas hydrates that have been later dissociated as the gas hydrate stability zone moved upward through time. Detailed characterization of the magnetic iron sulfide mineralogy and comparison with sedimentological and geochemical data will be attempted for better determining the significance of magnetic iron sulfides in Hydrate Ridge sediments and their possible applications in the study of gas hydrates.
Language:
English
Genre:
Serial
Rights:
URL:
Coverage: Geographic coordinates: North:44.3500 West:-125.0900 East:
-125.0400 South:44.3400
Keywords: Oceanography; anhysteretic remanent magnetization; Cascadia subduction zone; East Pacific; gas hydrates; Hydrate Ridge; iron sulfides; isothermal remanent magnetization; Leg 204; magnetic minerals; magnetic properties; magnetization; North Pacific; Northeast Pacific; Ocean Drilling Program; Pacific Ocean; paleomagnetism; remanent magnetization; sulfides;
.