地理科学 ›› 1995, Vol. 15 ›› Issue (4): 374-377,394.doi: 10.13249/j.cnki.sgs.1995.04.374

• 研究报道 • 上一篇    下一篇

云南东川古泥石流堆积物ESR测年的初步研究

业渝光1, 刁光波1, 和杰1, 高钧成2, 雷祥义3   

  1. 1. 地质矿产部海洋地质研究所;
    2. 中国计量科学研究院 北京100013;
    3. 西北大学地质系 西安710069
  • 收稿日期:1994-06-02 修回日期:1995-01-12 出版日期:1995-07-20 发布日期:1995-07-20
  • 基金资助:
    国家自然科学基金;地质行业科学技术发展基金联合资助项目

PRELIMINARY STUDY ON ESR DATING OF PALAEO-ACCUMULATION OF MUD-ROCK FLOW IN DONGCHUAN, YUNNAN

Ye Yuguang1, Diao Guangbo1, He Jie1, Gao Juncheng2, Lei Xiangyi3   

  1. 1. Institute of Marine Geology, Ministry of Geology and Mineral Resources, Qingdao 266071;
    2. National Institute of Metrology, Beijing 100013;
    3. Department of Geology, Northwest Uninersity, Xi’an 710069
  • Received:1994-06-02 Revised:1995-01-12 Online:1995-07-20 Published:1995-07-20

摘要: 用ESR方法对该区古泥石流堆积物的形成年代进行了初步研究,并讨论了此方法的可靠性、测年机理以及所得ESR年龄的地质意义.

Abstract: The ages of palaeo-accumulation of mud-rock flow in Dongchuan, Yunnan are ob-tained by ESR dating technique, they are consistent with 14C ages. The ESR ages show that the palaeo-accumulation of mud-rock flow is the product during the humid periods of the Late Pleistocene. The simulative experiments and analyses under SEM show that the reset mechanism of Ge center in quartz is most likely attributed to the collisions between quartz grains during the periods of quick transportation of mud-rock flow, besides the bleaching exposed to the sun.