Record Details

Implications of organic carbon, trace elemental and CaCO<sub>3</sub> variations in a sediment core from the Arabian Sea

NOPR - NISCAIR Online Periodicals Repository

View Archive Info
 
 
Field Value
 
Title Implications of organic carbon, trace elemental and CaCO3 variations in a sediment core from the Arabian Sea
 
Creator Shetye, Suhas S.
Sudhakar, Maruthadu
Mohan, Rahul
Tyagi, Abhishek
 
Subject Organic
Marine Upulling Phytoplankton Holoeine
 
Description 432-438
Arabian Sea differs from other oceanic areas by strong seasonal variations in sea surface circulation controlled by the monsoonal wind system, very high primary productivity (PP) and the presence of an intense Oxygen Minimum Zone (OMZ). Sediment core, collected from a depth of 803 M in OMZ of eastern Arabian Sea, was analyzed for organic carbon, CaCO3, grain size and trace metals (Cu, Zn, Cr, Mn and Fe). Organic carbon and CaCO3 varied from 0.5-4.7% and 34-55.9% respectively and exhibit an inverse relation, whereas a positive correlation is observed between organic carbon and clay fraction in the upper 150 cm. Cu, Zn and Cr show positive correlation with organic carbon and is negatively related to CaCO3. Mn and Cr show inverse correlation due to the influence of redox conditions of the sedimentary column. Low productivity, oxic conditions and less intense southwest monsoon prevailed during the deglacial period. Productivity has increased from 16 kyr to the modern age.
 
Date 2010-01-05T11:44:04Z
2010-01-05T11:44:04Z
2009-12
 
Type Article
 
Identifier 0975-1033 (Online); 0379-5136 (Print)
http://hdl.handle.net/123456789/7080
 
Language en_US
 
Publisher CSIR
 
Source IJMS Vol.38(4) [December 2009]