Ford, Kathryn H. et al. (2006): Preservation of bacterial magnetosomes at Sites 1225 and 1227

Leg/Site/Hole:
ODP 201
ODP 201 1225
ODP 201 1227
Identifier:
2007-008205
georefid
10.2973/odp.proc.sr.201.115.2006
doi
Creator:
Ford, Kathryn H.
University of Rhode Island, Graduate School of Oceanography, Narragansett, RI, United States
author
King, J. W.
University of Rhode Island, United States
author
Niitsuma, Sachiko
Ocean Drilling Program, United States
author
Identification:
Preservation of bacterial magnetosomes at Sites 1225 and 1227
2006
In: Jorgensen, Bo B. (editor), D'Hondt, Steven L. (editor), Miller, D. Jay (editor), Aiello, Ivano W., Bekins, Barbara, Blake, Ruth E., Cragg, Barry A., Cypionka, Heribert, Dickens, Gerald R., Ferdelman, Timothy G., Ford, Kathryn H., Gettemy, Glen L., Guerin, Gilles, Hinrichs, Kai-Uwe, Holm, Nils G., House, Christopher H., Inagaki, Fumio, Meister, Patrick, Mitterer, Richard M., Naehr, Thomas H., Niitsuma, Sachiko, Parkes, R. John, Schippers, Axel, Skilbeck, C. Gregory, Smith, David C., Spivack, Arthur J., Teske, Andreas P., Wiegel, Juergen, Proceedings of the Ocean Drilling Program; scientific results; controls on microbial communities in deeply buried sediments, eastern Equatorial Pacific and Peru Margin; covering Leg 201 of the cruises of the drilling vessel JOIDES Resolution; San Diego, California, to Valparaiso, Chile; Sites 1225-1231; 27 January-29 March 2002
Texas A&M University, Ocean Drilling Program, College Station, TX, United States
201
Samples were collected at Sites 1225 and 1227 to investigate the occurrence of fine-grained, biogenic magnetic particles (magnetosomes). Several magnetic methods, including anhysteretic remanent magnetization and isothermal remanent magnetization, were used to characterize the main magnetic carriers in the samples. Extracts were made to isolate the fine-grained fraction, which was then examined under a transmission electron microscope. Grains with the unique characteristics of magnetosomes were found in samples from regions in the core with both high and low concentrations of magnetic minerals. This suggests they have the potential to be a persistent proxy of paleoredox conditions.
English
Serial
Coverage:Geographic coordinates:
North:2.4600
West:-110.3400East: -79.5700
South:-9.0000
Stratigraphy; anhysteretic remanent magnetization; bacteria; Cenozoic; characterization; continental margin; cores; East Pacific; Equatorial Pacific; experimental studies; instruments; isothermal remanent magnetization; laboratory studies; Leg 201; magnetic properties; magnetic susceptibility; magnetization; magnetosomes; marine sediments; Neogene; Ocean Drilling Program; ODP Site 1225; ODP Site 1227; Pacific Ocean; paleo-oceanography; paleomagnetism; Peru; preservation; Quaternary; remanent magnetization; sediments; South America; Tertiary;
.