| OSL chronology of the Liena archeological site in the Yarlung Tsangpo valley throws new light on human occupation of the Tibetan Plateau | |
Ling, Zhiyong ; Yang, Xiaoyan; Wang, Yixuan; Wang, Yanren; Jin, Jianhui; Zhang, Dongju; Chen, Fahu
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| 第一作者 | Ling, Zhiyong |
| 2020-07 | |
| 发表期刊 | HOLOCENE
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| ISSN | 0959-6836 |
| 卷号 | 30期号:7页码:1043-1052 |
| 摘要 | Recent environmental archeological evidence has started to throw light on both the timing and processes of human colonization of the Tibetan Plateau (TP). Yarlung Tsangpo (YT) valley, a very important region of the southern TP for occupation, is home to not only modern Tibetans but also their ancestors. However, a lack of suitable sedimentary strata has limited the establishment of a secure chronology. Here, we report on a new stratigraphic section with prehistoric pottery and cultural layers that was discovered on a terrace of the YT at Liena, in Nyingchi County. The cultural layers are overlain by, and bedded within, eolian and lacustrine sediments. We used the quartz Optically Stimulated Luminescence (OSL) method to date 11 samples and performed geochemical analysis on 100 samples to derive paleoenvironmental indicators. The OSL analysis gave an age of 4.3 ka BP for the cultural layer, which makes it the earliest human activity in the YT valley of Nyingchi to date. In addition, commencement of eolian deposition was dated to at least 8.3 ka, coinciding with the Holocene warm period. We discuss possible causal factors for human occupation in the valley and show that climatic changes played a crucial role in prehistoric human migration c. 8.3-4.3 ka BP. Before the early Holocene, most of the river terraces in the valley were being actively reworked by rivers or covered by lakes. So there were no suitable places for occupation by ancient populations. With the recession of dammed lakes during the Holocene warm period, the relatively flat and wide valley terraces, blanketed with rich eolian deposits (such as sandy loess), provided an attractive place for ancient people engaged in nomadic and even agricultural activities. Hence, the climate conditions of the Holocene warm period drove the environmental changes that provided favorable conditions for ancient human activities. |
| DOI | 10.1177/0959683620908643 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.isl.ac.cn/handle/363002/33971 |
| 专题 | 盐湖地质与环境实验室 中国科学院青海盐湖研究所 支撑部门 |
| 推荐引用方式 GB/T 7714 | Ling, Zhiyong,Yang, Xiaoyan,Wang, Yixuan,et al. OSL chronology of the Liena archeological site in the Yarlung Tsangpo valley throws new light on human occupation of the Tibetan Plateau[J]. HOLOCENE,2020,30(7):1043-1052. |
| APA | Ling, Zhiyong.,Yang, Xiaoyan.,Wang, Yixuan.,Wang, Yanren.,Jin, Jianhui.,...&Chen, Fahu.(2020).OSL chronology of the Liena archeological site in the Yarlung Tsangpo valley throws new light on human occupation of the Tibetan Plateau.HOLOCENE,30(7),1043-1052. |
| MLA | Ling, Zhiyong,et al."OSL chronology of the Liena archeological site in the Yarlung Tsangpo valley throws new light on human occupation of the Tibetan Plateau".HOLOCENE 30.7(2020):1043-1052. |
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| OSL chronology of th（1478KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | 浏览 请求全文 | |
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