Sediment deposition rates on the continental margins of the eastern Arabian Sea using 210Pb, 137Cs and 14C

B. L K Somayajulu, R. Bhushan, Ashish Sarkar, G. S. Burr, A. J T Jull

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Abstract

Eight gravity cores from the active eastern continental margins of the Arabian Sea were dated using 210Pb(xs), 137Cs and 14C. The short-term (≤ 100 years) sedimentation rates range from 0.06 to 0.66 cm/year where as the long-term (≥ 1000 years) ones using AMS 14C on planktonic foraminifera varied from 0.004 to 0.13 cm/year. For long-term chronology (≤ 50000 years) AMS dating of well-cleaned planktonic foraminifera is most suited.

Original languageEnglish (US)
Pages (from-to)429-439
Number of pages11
JournalScience of the Total Environment
Volume237-238
DOIs
Publication statusPublished - Sep 30 1999

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Keywords

  • AMS
  • Arabian Sea
  • Continental margins
  • Dating
  • Radioisotope
  • Sedimentation rate

ASJC Scopus subject areas

  • Environmental Chemistry
  • Environmental Science(all)

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