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    • 10Be meltwater signal in Orca basin sediments, Gulf of Mexico

      B L K Somayajulu

      Volume 105 Issue 4 December 1996 pp 357-364

    • Fulltext

       

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      Permanent link:
      https://www.ias.ac.in/article/fulltext/jess/105/04/0357-0364

    • Keywords

       

      Meltwater; beryllium-10; Gulf of Mexico; cosmic rays

    • Abstract

       

      An increase in the cosmogenic beryllium-10 content of the Orca basin sediments due to the flooding of the Gulf of Mexico (GM) by meltwaters during the late Wisconsin interglacial is reported. A strong negative correlation (γ =-0.99) betweenδ18O (in the range o f-1.5‰ to +0.5‰) and10Be/Al ratio is seen. During intense flooding reflected by a decrease in δ18O by ∼ 2‰, this correlation may not hold as some of the sediments with low10Be/Al ratio and deposited on the shelf and slope regions of the GM during the earlier glacial period would also be washed into the basin. The deposited sediment would then be a mixture with a10Be/Al ratio lower than expected from the correlation

    • Author Affiliations

       

      B L K Somayajulu1

      1. Physical Research Laboratory, Ahmedabad - 380 009, India

    • Dates

       
      Published
      December 1996
      Manuscript received
      17 February 1996
      Manuscript revised
      29 July 1996

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