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    Does Glacial-Interglacial Transition Affect Sediment Accumulation in Monsoon-Dominated Regions?

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    Acta_Geologica_Sinica_91_1079.pdf (1.680Mb)
    Date
    2017
    Author
    Singh, D.P.
    Saraswat, R.
    Naik, Dinesh K.
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    Abstract
    The spatio?temporal changes in sedimentation rate along the continental margin of the monsoon?dominated eastern Arabian Sea during the last 24 kyr have been estimated from a compilation of 58 radiocarbon dated cores, in order to understand the effect of glacial?interglacial variation on sedimentation. The sedimentation rate has been computed for four?time slices, viz. the last glacial maximum, glacial?interglacial transition, early Holocene and late Holocene. We report that the average sedimentation rate in the slope to the abyssal region of the entire eastern Arabian Sea, although higher during the Holocene as compared with that during the last glacial maximum and glacial?interglacial transition, does not significantly vary during all four?time intervals. The sedimentation rate during any particular time interval, however, varies from core to core, thus indicating zonal changes. We report four zones of relatively high sedimentation rate, viz. the northeastern Arabian Sea, the region off the Gulf of Khambhat, the region off Goa and Mangalore, and off the southern tip of India. We suggest that a complex interaction of land?ocean?atmospheric processes controlled sedimentation rate in the eastern Arabian Sea during the last 24 kyr in such a way that the average sedimentation rate does not vary significantly, even during highly contrasting climatic conditions.
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    https://doi.org/10.1111/1755-6724.13325
    http://drs.nio.org/drs/handle/2264/7848
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