Brucite chimney formation and carbonate alteration at the<scp>S</scp>hinkai<scp>S</scp>eep<scp>F</scp>ield, a serpentinite‐hosted vent system in the<scp>s</scp>outhern<scp>M</scp>ariana forearc

DOI Web Site Web Site Web Site 被引用文献13件 参考文献77件 オープンアクセス
  • T. Okumura
    Department of Subsurface Geobiological Analysis and Research (D‐SUGAR)Japan Agency for Marine‐Earth Science and TechnologyYokosuka Japan
  • Y. Ohara
    Department of Subsurface Geobiological Analysis and Research (D‐SUGAR)Japan Agency for Marine‐Earth Science and TechnologyYokosuka Japan
  • R. J. Stern
    Geosciences DepartmentUniversity of Texas at DallasRichardson Texas USA
  • T. Yamanaka
    Graduate School of Natural Science and TechnologyOkayama UniversityOkayama Japan
  • Y. Onishi
    Graduate School of Natural Science and TechnologyOkayama UniversityOkayama Japan
  • H. Watanabe
    Marine Biodiversity Research ProgramJapan Agency for Marine‐Earth Science and TechnologyYokosuka Japan
  • C. Chen
    Department of Subsurface Geobiological Analysis and Research (D‐SUGAR)Japan Agency for Marine‐Earth Science and TechnologyYokosuka Japan
  • S. H. Bloomer
    Oregon State UniversityCorvallis Oregon USA
  • I. Pujana
    Geosciences DepartmentUniversity of Texas at DallasRichardson Texas USA
  • S. Sakai
    Institute of BiogeosciencesJapan Agency for Marine‐Earth Science and Technology Yokosuka Japan
  • T. Ishii
    Fukada Geological Institute Tokyo Japan
  • K. Takai
    Department of Subsurface Geobiological Analysis and Research (D‐SUGAR)Japan Agency for Marine‐Earth Science and TechnologyYokosuka Japan

書誌事項

公開日
2016-09
資源種別
journal article
権利情報
  • http://creativecommons.org/licenses/by-nc-nd/4.0/
  • http://creativecommons.org/licenses/by-nc-nd/4.0/
  • http://doi.wiley.com/10.1002/tdm_license_1.1
DOI
  • 10.1002/2016gc006449
公開者
American Geophysical Union (AGU)

この論文をさがす

説明

Brucite-carbonate chimneys were discovered from the deepest known (∼5700 m depth) serpentinite-hosted ecosystem – the Shinkai Seep Field (SSF) in the southern Mariana forearc. Textural observations and geochemical analysis reveal three types (I-III) of chimneys formed by the precipitation and dissolution of constitutive minerals. Type I chimneys are bright white to light yellow, have a spiky crystalline and wrinkled surface with microbial mat and contain more brucite; these formed as a result of rapid precipitation under high fluid discharge conditions. Type II chimneys exhibit white to dull brown coloration, tuberous textures like vascular bundles, and are covered with grayish microbial mats and dense colonies of Phyllochaetopterus. This type of chimney is characterized by inner brucite-rich and outer carbonate rich zones and is thought to have precipitated from lower fluid discharge conditions than type I chimneys. Type III chimneys are ivory colored, have surface depressions and lack living microbial mats or animals. This type of chimney mainly consists of carbonate, and is in a dissolution stage. Stable carbon isotope compositions of carbonates in the two types (I and II) of active chimneys are extremely 13C-enriched (up to +24.1‰), which may reflect biological 12C consumption under extremely low dissolved inorganic carbon concentration in alkaline fluid. Type III chimneys have 13C compositions indicating re-equilibration with seawater. Our findings demonstrate for the first time that carbonate chimneys can be form below carbonate compensation depth and provide new insights about linked geologic, hydrologic, and biological processes of the global deep-sea serpentinite-hosted vent systems. This article is protected by copyright. All rights reserved.

収録刊行物

被引用文献 (13)*注記

もっと見る

参考文献 (77)*注記

もっと見る

関連プロジェクト

もっと見る

問題の指摘

ページトップへ