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Type: Journal article
Title: River response to Quaternary climatic fluctuations: evidence from the Son and Belan valleys, north-central India
Author: Williams, M.
Pal, J.
Jaiswal, M.
Singhvi, A.
Citation: Quaternary Science Reviews: the international multidisciplinary research and review journal, 2006; 25(19-20):2619-2631
Publisher: Pergamon-Elsevier Science Ltd
Issue Date: 2006
ISSN: 0277-3791
Statement of
M.A.J. Williams, J.N. Pal, M. Jaiswal and A.K. Singhvi
Abstract: The last glacial period was cold and dry in peninsular India. In north-central India, the interval from 39±9 to 16±3 ka was associated with widespread and prolonged aggradation in the Son and Belan valleys. The aggradation ended with sustained vertical incision after 16±3 ka and reflects a return to warmer, wetter conditions. In this region, it would appear that terminal Pleistocene to Holocene river incision was broadly synchronous with a strong summer monsoon regime and higher levels of river discharge and the preceding river aggradation with lower discharge and a weaker or more variable summer monsoon regime. Two older phases of prolonged aggradation followed by vertical incision are evident in the Son and Belan valleys before ~39 ka. One of these phases is centred towards 73±4 ka when ash from the Toba mega-eruption in Sumatra was deposited across peninsular India. The following phase of aggradation has yielded infrared stimulated luminescence ages of 58±6 and 45±12 ka. The youngest phase of aggradation began towards ~5.5 ka and seems to mark a return to a weaker summer monsoon regime.
DOI: 10.1016/j.quascirev.2005.07.018
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Appears in Collections:Aurora harvest 6
Geography, Environment and Population publications

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