Seep-carbonate lamination controlled by cyclic particle flux

Tobias Himmler, Germain Bayon, David Wangner, Frieder Enzmann, Jörn Peckmann, Gerhard Bohrmann

Research output: Contribution to journalArticleResearchpeer-review

11 Citations (Scopus)

Abstract

Authigenic carbonate build-ups develop at seafloor methane-seeps, where microbially mediated sulphate-dependent anaerobic oxidation of methane facilitates carbonate precipitation. Despite being valuable recorders of past methane seepage events, their role as archives of atmospheric processes has not been examined. Here we show that cyclic sedimentation pulses related to the Indian monsoon in concert with authigenic precipitation of methane-derived aragonite gave rise to a well-laminated carbonate build-up within the oxygen minimum zone off Pakistan (northern Arabian Sea). U-Th dating indicates that the build-up grew during past ∼1,130 years, creating an exceptional high-resolution archive of the Indian monsoon system. Monsoon-controlled formation of seep-carbonates extends the known environmental processes recorded by seep-carbonates, revealing a new relationship between atmospheric and seafloor processes.

Original languageEnglish
Article number37439
Number of pages8
JournalScientific Reports
Volume6
DOIs
Publication statusPublished - 23 Nov 2016

Programme Area

  • Programme Area 5: Nature and Climate

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