地理科学 ›› 1996, Vol. 16 ›› Issue (1): 37-45.doi: 10.13249/j.cnki.sgs.1996.01.37

• 论文 • 上一篇    下一篇

庐山、黄山与天目山地区第四纪沉积环境比较研究

朱诚   

  1. 南京大学大地海洋科学系 南京210008
  • 收稿日期:1994-10-01 修回日期:1995-02-01 出版日期:1996-01-20 发布日期:1996-01-20
  • 基金资助:
    国家博士后科学基金;南京大学测试基金资助项目

COMPARISON OF QUQTERNARY DEPOSIT ENVIRONMENT AMONG LUSHAN, HUANGSHAN AND TIANMU MOUMTAIRS

Zhu Cheng   

  1. Department of Geo & Ocean, Nanjing University, Nanjing 210008
  • Received:1994-10-01 Revised:1995-02-01 Online:1996-01-20 Published:1996-01-20

摘要: 对庐山、黄山、天目山几个主要剖面进行Fe3+/Fe2+测定结果表明,三个地区在第四纪期间最低年平均气温并未做过0℃,因此不具备冰川发育条件.而且根据磁性地层、岩性薄片、网纹化现象、CM图、x衍射和抱粉分析结果,说明三个地区第四系具有非冰川的多成因沉积特点.

Abstract: The data of Fe3+/Fe2+ show that the lowest annual air temperature of the Lushan, Huangshan and Tianmu mountains didn’t reach below 0℃ therefore, glacier couldn’t develop in these regions. According to palaeomagnetic test combined with the phenomenon of red reticulate ground and lithologic identification, the author elaborates that the "Poyang moraine" is mainly the fluvial sediments of the early period of the Middle Pleis-tocene. It was formed by transportation of the ancient Gan River under the humid hot cli-mate. For C-M image, the Dajiaochang profile of Lushan Mountain is very similar to periglacial and the debris flow deposits, but the profile of Jiangpochang and Yaoshalin have many kinds of geneses, i. e., debris flow, water debris flow and alluvial etc. In the south piedmont of the Huangshan Mountain, slope gravity and slope seasonal running wa-ter transportation are mainly deposit factors. In the "glacial varve" of the Denglongqiao profile of the Tianmu Mountain, its CaO and Na2O content is lower than the nonglacial carve, the fact shows that it has the features of the violent leaching, weathering and nonglacial action.