作者
Steven L Goodbred Jr, Steven A Kuehl
发表日期
1998/11/30
期刊
Sedimentary Geology
卷号
121
期号
3
页码范围
239-258
出版商
Elsevier
简介
Floodplain deposits are recognized as potentially large sinks for fluvial sediments, yet spatial and temporal patterns of accumulation are not known for many river systems. In the tectonically active Bengal Basin, the Ganges and Brahmaputra rivers coalesce and have formed a large floodplain/delta complex, where widespread overbank flooding may deposit a significant portion of the river's estimated sediment discharge. To investigate the magnitude and distribution of this process, accumulation rates were determined by 137Cs and 210Pb radioisotope geochronology at 60 sites located in three regions of the Bengal Basin differing in age, physiography, and river influence. These geochronological methods have been applied to floodplain environments in only a few recent studies, and the present research offers a revised approach for heterogeneous systems. Patterns of sediment deposition in the Bengal Basin …
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SL Goodbred Jr, SA Kuehl - Sedimentary Geology, 1998