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干旱区地理 ›› 2001, Vol. 24 ›› Issue (2): 130-135.doi: 10.13826/j.cnki.cn65-1103/x.2001.02.007

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浅谈新疆罗布泊地区第四纪下限

赵振宏1, 侯光才1, 齐万秋1, 常志勇1, 陈旭光1, 王永2, 林景星2   

  1. 1.新疆地矿局第二水文地质工程地质大队 昌吉市 831100;
    2.地质科学院地质研究所, 北京市 100037
  • 收稿日期:2000-11-08 修回日期:2001-01-10 发布日期:2025-12-31

DISCUSSION OF THE LOWER LIMIT OF QUATERNARY IN LOP NUR, XINJIANG

ZHAO Zhen-hong1, HOU Guang-cai1, QI Wang-qiu1, CHANG Zhi-yong1, CHEN Xu-guang1, WANG Yong2, LIN Jing-xing2   

  1. 1. Hydrogeologicaal Party, Changji, Xinjang, 831100;
    2. Institute of Geology, Chinese Academy of Geological Sciences, Beijian, 100037
  • Received:2000-11-08 Revised:2001-01-10 Online:2025-12-31

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摘要： 罗布泊地区东部AK1孔地层根据岩石地层单元和古地磁、孢粉、氧化铁、易溶盐、14 C等测定结果, 划分为全新统(Q4)、上更新统(Q3)、中更新统(Q2)、下更新统(Q1)和上新统(N2)。在孔深416.90m处, 岩石、构造、古地磁、气候、地球化学等标志均非常明显, 结合现在新疆第四纪划分方案, 我们认为宜将此界线作为罗布泊地区第四系下界。其位于凯纳事件稍下, 年龄约305万年。

关键词: 罗布泊地区, 第四纪下限, 新疆

Abstract: The stratigraphy of Hole AK 1 in the East of Lop Nur is divided into five parts：Q 4, Q 3, Q 2, Q 1 and N 2. This division is upon the strength of the lithostratigraphy unit and the analgsis of paleomagnetism, sporopollen, Fe 3＋, solubesalt, 14 C ete. There is a dividing line at the deep of 416.90 m. It has very apparent differences on the characteristice of lithostratigraphy, structure, paleomagnetism, geological clmate, geochemistry etc. Integrating the project of Quaternary stratigraphic division in Xinjiang, that dividing line is the lower limit of Quaternary system in Lop Nur. It is before Keana Event and its age is about 2050 Ka.

Key words: Lop Nur, the lower limit of Quaternary

中图分类号: 

  • P534.63