Snyder, Glen T. et al. (2006): Iodine and boron in Mariana serpentinite mud volcanoes (ODP Legs 125 and 195); implications for forearc processes and subduction recycling
Leg/Site/Hole:
Related Expeditions:
ODP 125
Identifier:
ID:
2006-066605
Type:
georefid
ID:
10.2973/odp.proc.sr.195.102.2005
Type:
doi
Creator:
Name:
Snyder, Glen T.
Affiliation:
Rice University, Earth Science Department, Houston, TX, United States
Role:
author
Name:
Savov, Ivan P.
Affiliation:
Geological Survey of Canada, Canada
Role:
author
Name:
Muramatsu, Yasuyuki
Affiliation:
Ocean Drilling Program, United States
Role:
author
Identification:
Title:
Iodine and boron in Mariana serpentinite mud volcanoes (ODP Legs 125 and 195); implications for forearc processes and subduction recycling
Year:
2006
Source:
In: Shinohara, Masanao (editor), Salisbury, Matthew H. (editor), Richter, Carl (editor), Araki, Eiichiro, Barr, Samantha R., D'Antonio, Massimo, Dean, Simon M., Diekmann, Bernhard, Edwards, K. Michelle, Fryer, Patricia B., Gaillot, Philippe J., Hammon, William S., III, Hart, David, Januszczak, Nicole, Komor, Stephen C., Kristensen, Mette B., Lockwood, John P., Mottl, Michael J., Moyer, Craig L., Nakahigashi, Kazuo, Savov, Ivan P., Su Xin, Wei, Kuo-Yen, Yamada, Tomoaki, Proceedings of the Ocean Drilling Program; scientific results; seafloor observatories and the Kuroshio Current; covering Leg 195 of the cruises of the drilling vessel JOIDES Resolution; Apra Harbor, Guam, to Keelung, Taiwan; Sites 1200-1202; 2 March-2 May 2001
Publisher:
Texas A&M University, Ocean Drilling Program, College Station, TX, United States
Volume:
195
Issue:
Pages:
Abstract:
Iodine and boron were analyzed in pore fluids, serpentinized ultramafic clasts, and the serpentinized mud matrix of the South Chamorro Seamount mud volcano (Ocean Drilling Program Leg 195 Site 1200) to determine the distribution of these elements in deep forearc settings. Similar analyses of clasts and muds from the Conical Seamount mud volcano (Leg 125 Site 779) were also carried out. Interstitial pore fluids are enriched in boron and iodine without appreciable change in chloride concentration relative to seawater. Both the ultramafic clasts and the associated serpentinized mud present the highest documented iodine concentrations for all types of nonsedimentary rocks (6.3-101.7 mu mol/kg). Such high iodine concentrations, if commonplace in marine forearc settings, may constitute a significant, previously unknown reservoir of iodine. This serpentinized forearc mantle reservoir may potentially contribute to the total crustal iodine budget and provide a mechanism for its recycling at convergent plate margins. Both clasts and mud show concurrent enrichments in boron and iodine, and the similarity in pore fluid profiles also suggests that these two incompatible, fluid-mobile elements behave similarly at convergent plate margins.
Language:
English
Genre:
Serial
Rights:
URL:
Coverage: Geographic coordinates: North:19.3045 West:146.0000 East:
146.4145 South:13.4700
Keywords: Geochemistry of rocks, soils, and sediments; Igneous and metamorphic petrology; boron; Conical Seamount; geochemistry; halogens; igneous rocks; iodine; Leg 125; Leg 195; Mariana Trench; metaigneous rocks; metamorphic rocks; metasomatic rocks; metasomatism; mud volcanoes; North Pacific; Northwest Pacific; Ocean Drilling Program; ODP Site 1200; ODP Site 779; Pacific Ocean; plate tectonics; plutonic rocks; pore water; recycling; serpentinite; serpentinization; subduction; submarine volcanoes; ultramafics; volcanoes; West Pacific;
.