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首页> 外文期刊>Journal of Asian earth sciences >New evidence for the catastrophic demise of a prehistoric settlement (the Lajia Ruins) in the Guanting Basin, upper Yellow River, NW China
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New evidence for the catastrophic demise of a prehistoric settlement (the Lajia Ruins) in the Guanting Basin, upper Yellow River, NW China

机译：中国西北黄河官厅盆地史前定居点（拉家遗址）灾难性灭亡的新证据

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摘要

The Lajia Ruins in the Guanting Basin, NW China, are a product of the prehistoric Qijia Culture. Like Pompeii, they are a rare example of an archaeological site preserved by a natural disaster and are therefore important in archaeology, anthropology and geology. However, the nature of the disaster(s) responsible for the destruction of the site remains controversial. Most studies have focused on an earthquake and a red clay layer directly overlying the site and a detailed stratigraphic study of the mid-Holocene sedimentary strata combined with other intervals of red clay deposition (hence possible disasters) is lacking. We identified a mid-Holocene paleosol sequence (the Shanglajia section) at the site which contains two layers of red clay, dated to 3950 a BP and 3500 a BP, intercalated within the mid-Holocene paleosol (So). Subsequent multi-proxy analysis indicated that the characteristics of the two red clay layers resemble those of typical Tertiary red clay deposits and the modern gully deposit at the foot of the Great Red Hills, but are distinctly different from those of the slackwater deposits of the Yellow River and the mid-Holocene paleosol. Our results suggest that, at 3950 a BP and 3500 a BP, two large-scale rainstorm-induced mudflow events, originating from the gullies to the north, flooded the Lajia area on the second terrace of the Yellow River, devastating and burying the human settlements. We infer that the intensified erosion and mass wasting were caused by human activity; in addition, natural factors such as rainstorms and earthquakes, may also have played an important role in triggering catastrophic mudflow events in the Tertiary Red Clay deposits. Overall, our results provide further insights into prehistoric man-land relationships in this environmentally sensitive region which may have implications for modern land use in this region of China and elsewhere.
机译：中国西北部官厅盆地的拉家遗址是史前齐家文化的产物。像庞贝一样，它们是自然灾害保护的考古遗址的罕见例子，因此在考古，人类学和地质学中很重要。但是，造成现场破坏的灾难的性质仍存在争议。大多数研究都集中在地震和直接覆盖该地点的红粘土层上，并且缺乏对全新世中期沉积地层以及其他间隔的红粘土沉积（因此可能造成灾害）的详细地层学研究。我们在现场发现了全新世中期古土壤序列（尚腊甲剖面），该序列包含两层红粘土，年代分别为3950 a BP和3500 a BP，插在全新世中期古土壤（So）中。随后的多代理分析表明，这两个红粘土层的特征类似于典型的第三大红粘土沉积物和大红山脚下的现代沟壑沉积物的特征，但与黄河松弛水沉积物的特征明显不同河流和全新世中期古土壤。我们的研究结果表明，在3950 a BP和3500 a BP处，两次暴雨诱发的泥石流事件起源于北部的沟壑，淹没了黄河第二阶地的拉家地区，摧毁并掩埋了人类定居点。我们推断侵蚀加剧和大量浪费是由于人类活动引起的。此外，暴雨和地震等自然因素也可能在引发第三纪红粘土沉积物中引发灾难性泥石流事件中发挥了重要作用。总体而言，我们的结果为该环境敏感地区的史前人与土地之间的关系提供了进一步的见解，这可能对中国这一地区及其他地区的现代土地利用产生影响。

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  • 来源
    《Journal of Asian earth sciences》 |2017年第15期|134-141|共8页
  • 作者

    Zhao Hui; Huang Chun Chang; Zheng Zixing; Hu Ying; Zhang Yuzhu; Guo Yongqiang; Zhou Qiang;

  • 作者单位

    Shaanxi Normal Univ, Dept Geog, Xian 710062, Shaanxi, Peoples R China|Chinese Acad Sci, State Key Lab Loess & Quaternary Geol, Inst Earth Environm, Xian 710061, Shaanxi, Peoples R China;

    Shaanxi Normal Univ, Dept Geog, Xian 710062, Shaanxi, Peoples R China;

    Shaanxi Normal Univ, Dept Geog, Xian 710062, Shaanxi, Peoples R China;

    Shaanxi Normal Univ, Dept Geog, Xian 710062, Shaanxi, Peoples R China;

    Northwest Univ, Coll Urban & Environm Sci, Xian 710127, Shaanxi, Peoples R China;

    Shaanxi Normal Univ, Dept Geog, Xian 710062, Shaanxi, Peoples R China;

    Qinghai Normal Univ, Sch Life & Geog Sci, Xining 810008, Qinghai, Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Prehistoric catastrophes; Red clay; Mudflow; Human impact; Lajia Ruins;

    机译：史前巨灾;红黏土;泥石流;人为冲击;拉家遗址;

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