Productivity fluctuations in the southeastern Arabian Sea during the last 140 ka

Productivity fluctuations in the southeastern Arabian Sea during the last 140 ka

Detailed analyses of multiple geochemical productivity proxies such as calcium carbonate, biogenic opal, biogenic Ba, organic carbon and total nitrogen have been carried out on a sediment core from the southeastern Arabian Sea to trace the palaeoproductivity fluctuations over the last 140 ka. High c...

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Veröffentlicht in:Palaeogeography, palaeoclimatology, palaeoecology palaeoclimatology, palaeoecology, 2003-05, Vol.193 (3), p.575-590
Hauptverfasser: Pattan, J.N., Masuzawa, Toshiyuki, Naidu, P.Divakar, Parthiban, G., Yamamoto, Mineko
Format: Artikel
Sprache:eng
Schlagworte:
Al/Ti ratio
biogenic barium
biogenic opal
calcium carbonate
Holocene
organic carbon
Pleistocene
productivity proxies
southeastern Arabian Sea
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Zusammenfassung:Detailed analyses of multiple geochemical productivity proxies such as calcium carbonate, biogenic opal, biogenic Ba, organic carbon and total nitrogen have been carried out on a sediment core from the southeastern Arabian Sea to trace the palaeoproductivity fluctuations over the last 140 ka. High calcium carbonate, biogenic opal, biogenic Ba contents (wt%) and their mass accumulation rates (g/cm 2/ka) suggest higher productivity during major interglacials than in the glacials. Organic carbon content (
ISSN:0031-0182
1872-616X
DOI:10.1016/S0031-0182(03)00267-0