期刊
JOURNAL OF QUATERNARY SCIENCE
卷 35, 期 8, 页码 1089-1099出版社
WILEY
DOI: 10.1002/jqs.3240
关键词
C-14; Gangaridai civilization; luminescence dating; river migration; Wari-Bateshwar
资金
- National Non-Profit Fundamental Research Grant of China [IGCEA1713, IGCEA1720, IGCEA1818]
- National Natural Science Foundation of China [41772199]
- Youth Innovation Promotion Association of the Chinese Academy of Sciences [2018499]
- Bangladeshi Ministry of Cultural Affairs
Bangladesh is one of the most densely populated countries in the world. There are 57 trans-frontier rivers in the country, the widest being the Brahmaputra River. The river's channels have frequently changed course, but the relationship between such river migrations and human settlement patterns has remained unstudied. In this paper, optically stimulated luminescence and radiocarbon dating techniques were applied to sedimentary and organic materials in the oldest urban center (Wari-Bateshwar) in Bangladesh. The results showed that the landscape around the urban center was dominated by floodplain and peatland facies between 7.9-7.6 and 4.7-1.6 ka, respectively. Humans occupied this area at similar to 3.2 ka, and manufactured delicate semi-precious gemstone beads between similar to 2.4 and 1.8 ka. The urban center might be the same as an important city of the Gangaridai described in historical records. Due to fluvial migration at similar to 1.8 ka, the area surrounding the urban center was covered by fluvial sand. Humans might have been forced to abandon the urban center, leading to the bead processing technology in Bangladesh being lost forever. Copyright (c) 2020 John Wiley & Sons, Ltd.
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