Bach, Wolfgang et al. (2007): Chemical and isotopic (S, Sr) composition of anhydrite from ODP Leg 193, PACMANUS hydrothermal system, Manus Basin, Papua New Guinea
Leg/Site/Hole:
Related Expeditions:
ODP 193
Identifier:
ID:
2007-051489
Type:
georefid
ID:
10.2973/odp.proc.sr.193.214.2005
Type:
doi
Creator:
Name:
Bach, Wolfgang
Affiliation:
Woods Hole Oceanographic Institution, Woods Hole, MA, United States
Role:
author
Name:
Roberts, Stephen
Affiliation:
CSIRO, Australia
Role:
author
Name:
Binns, Raymond A.
Affiliation:
Ocean Drilling Program, United States
Role:
author
Identification:
Title:
Chemical and isotopic (S, Sr) composition of anhydrite from ODP Leg 193, PACMANUS hydrothermal system, Manus Basin, Papua New Guinea
Year:
2007
Source:
In: Barriga, Fernando J. A. S., Binns, Raymond A., Miller, D. Jay, Asada, Ryuji, Bach, Wolfgang, Bartetzko, Anne C. M., Benning, Liane G., Bjerkgard, Terje, Christiansen, Lizet B., Elswick, Erika R., Findlay, Robert, Iturrino, Gerardo J., Kimura, Hiroyuki, Kulange, John B., Lackschewitz, Klas S., Lee, Sang-Mook, Masta, Andrew, Paulick, Holger, Pinto, Alvaro M., Roberts, Stephen, Scott, Steven D., Vanko, David A., Warden, Ian, Yeats, Christopher J., Proceedings of the Ocean Drilling Program; scientific results; anatomy of an active felsic-hosted hydrothermal system, eastern Manus Basin; covering Leg 193 of the cruises of the drilling vessel JOIDES Resolution; Apra Harbor, Guam, to Townsville, Australia; Sites 1188-1191; 7 November 2000-3 January 2001
Publisher:
Texas A&M University, Ocean Drilling Program, College Station, TX, United States
Volume:
193
Issue:
Pages:
Abstract:
Sr and S isotope data as well as trace element data for anhydrite samples from Sites 1188 and 1189 in the PACMANUS hydrothermal area are presented here. (super 87) Sr/ (super 86) Sr ratios range from 0.7050 to 0.7086, suggesting that the anhydrites precipitated from fluids that were variably influenced by entrained seawater (0%-89%). delta (super 3) 4S values range between 18.1% and 22.5%, indicating the main source of sulfate is seawater that may be affected to small extents by sulfide oxidation or magmatic sulfate input (delta (super 34) S<21%) and minor sulfate reduction (delta (super 34) S>21%). Rare earth element (REE) concentrations are highly variable, particularly at Site 1188. Chondrite-normalized REE pattern shapes comprise light REE enriched, light REE depleted, mid-REE enriched, and variable positive and negative Eu anomalies. Significant correlations between trace element and isotopic compositions are lacking. Anhydrite from Site 1188, a site of diffuse venting, has systematically lower delta (super 34) S and higher Sr contents and somewhat lower average (super 87) Sr/ (super 86) Sr than anhydrite from Site 1189. This is possibly a consequence of the different fluid flow regime with diffuse flow at Site 1188 and focused flow at Site 1189.
Language:
English
Genre:
Serial
Rights:
URL:
Coverage: Geographic coordinates: North:-3.4300 West:151.4000 East:
151.4100 South:-3.4400
Keywords: Isotope geochemistry; alkaline earth metals; anhydrite; Bismarck Sea; crystal chemistry; geochemical anomalies; geochemistry; hydrothermal vents; isotope ratios; isotopes; Leg 193; Manus Basin; metals; Ocean Drilling Program; ODP Site 1188; ODP Site 1189; Pacific Ocean; PACMANUS hydrothermal field; rare earths; S-34/S-32; South Pacific; Southwest Pacific; Sr-87/Sr-86; stable isotopes; strontium; sulfates; sulfur; trace elements; West Pacific;
.