地理科学 ›› 1982, Vol. 2 ›› Issue (3): 202-209,291.doi: 10.13249/j.cnki.sgs.1982.03.202

• 论文 • 上一篇    下一篇

甘肃陇西盆地的黄土

文启忠, 郑洪汉, 韩家楙, 王俊达, 林绍孟, 乔玉楼, 魏兰英, 刁桂仪   

  1. 中国科学院地球化学研究所
  • 出版日期:1982-05-20 发布日期:1982-05-20

LOESS OF LONGXI BASIN IN GANSU PROVINCE

Wen Qizhong, Zheng Honghan, Han Jiamao, Wang Junda, Lin Shaomong, Qiao Yulou, Wei Lanying, Diao Guiyi   

  1. Institute of Geochemistry, Academia Sinica
  • Online:1982-05-20 Published:1982-05-20

摘要: 陇西盆地黄土的研究系于1978年配合工程任务开展的,重点研究了文峰镇东南暖泉沟剖面,分析项目有古地磁、C14年龄,孢子花粉、重矿物,粘土矿物、化学成分等。本文系对该剖面所做各项分析的总结。工作中得到甘肃省物资局和省地质局所属部门的大力协助和支持,谨致谢意。

Abstract: Nuanquangou loess section at Longxi basin has been examined in terms of stratigraphic investigation,radiocarbon dating,paleomagnetie polarity,and spore-pollen diagram mineral and chemical analyses.The results indicated that the section is one of acient loess sections with a continuous sedimentation and composed of homogeneous materials with rich-carbonate.Brunhes/Matuyama boundaryand Jaramillo event were recorded in the section.Stratigraphically,this section can be divided into Holocene and pleistocene loesses.The latter included Malan,Lishi and Wueheng loess in descending order.They developed at the age beginning at ca.1.2m.y.Whereas,Nuanquangou section reflects several local characteristics different from those on other areas.