Evidence of poor bottom water ventilation during LGM in the equatorial Indian ocean

K. R. Chandana, Ravi Bhushan, A. J.T. Jull

Research output: Contribution to journalArticle

2 Scopus citations

Abstract

Multi-proxy approach for the reconstruction of paleo-redox conditions is attempted on a radiocarbon (14C) dated sediment core near the equatorial Indian Ocean. Based on the behavior and distribution of redox sensitive and productivity proxies, study demonstrates prevalence of anoxic bottom water conditions during LGM due to poorly ventilated bottom waters augmented by high surface productivity resulting in better preservation of organic carbon (OC). During early Holocene, the equatorial Indian Ocean witnessed high sedimentation rates resulting in high organic carbon (OC) with depleted redox sensitive elements thereby causing better preservation of OC. The study underscores poor bottom water ventilation during LGM and preservation of OC as a result of high sedimentation rate in early Holocene.

Original languageEnglish (US)
Article number84
JournalFrontiers in Earth Science
Volume5
DOIs
StatePublished - Oct 24 2017

Keywords

  • Anoxic bottom water
  • GEOTRACES
  • Holocene period
  • LGM
  • Organic carbon
  • Redox sensitive elements

ASJC Scopus subject areas

  • Earth and Planetary Sciences(all)

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