Unknown
In:
pjms_ku@yahoo.com
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http://aquaticcommons.org/id/eprint/26522
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25017
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2019-05-26 07:37:41
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26522
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University of Karachi. Marine Reference Collection and Resource Centre
Publication Date:
2021-07-24
Description:
In this study composition of organic matter and its variations in marine sediments of northwestern Arabian sea has been discussed. This paper presents the geochemical analysis of organic carbon content, C/N and δ13 stable carbon isotope. The primary objective was to investigate the organic matter in sediments below an upwelling area. Undisturbed sediments (Piston core NIOP-486) of late Pleistocene time was collected during Netherlands Indian Ocean Program (NIOP-1992-93). The core NIOP-486 was raised from a depth of 2077 meters near the Owen ridge. This core records deposition history of last 200,000 years and includes 4 warm and 3 cold periods. The distribution of organic carbon content in studied core shows cyclicity during glacial and interglacial stages. The source of organic matter and variations in glacial/interglacial stages are discussed. C/N ratio and δ13 Corg isotope results are described to assess the relative proportions of terrestrial and marine organic matter.
Keywords:
Chemistry
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Organic Carbon
;
C/N ratio
;
δ13 stable carbon isotope
;
Terrestrial and Marine organic matter
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Sediment core
;
Glacial/interglacial climate
;
northwestern Arabian sea
;
Netherlands Indian Ocean Program (NIOP-92-93).
Repository Name:
AquaDocs
Type:
article
,
TRUE
Format:
application/pdf
Format:
application/pdf
Format:
1-14
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