Fluctuation of chemical compositions of the phase-separated hydrothermal fluid from the North Fiji Basin Ridge

Jun ichiro Ishibashi, Daniel Grimaud, Yukihiro Nojiri, Jean Marie Auzende, Tetsuro Urabe

Research output: Contribution to journalArticlepeer-review

35 Citations (Scopus)

Abstract

On the central ridge of the North Fiji Basin (southwest Pacific), hydrothermal activities were located in 1989. It was the second discovery of the hydrothermal fluid undergo phase separation. During a dive mission of Shinkai 6500 in 1991, we revisited the hydrothermal area and collected fluid samples from the same anhydrite chimney. Fluid composition of the end member shows no significant changes during this two years. Other fluid ventings 150 m apart show similar chemistry, suggesting that the phase separation and segregation processes occur throughout the hydrothermal area. Small fluctuation in chemical composition of the fluids from two sites is attributed to subseafloor fluid-rock interaction after the phase segregation.

Original languageEnglish
Pages (from-to)215-226
Number of pages12
JournalMarine Geology
Volume116
Issue number1-2
DOIs
Publication statusPublished - Jan 1994
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Oceanography
  • Geology
  • Geochemistry and Petrology

Fingerprint Dive into the research topics of 'Fluctuation of chemical compositions of the phase-separated hydrothermal fluid from the North Fiji Basin Ridge'. Together they form a unique fingerprint.

Cite this