石油学报 ›› 1992, Vol. 13 ›› Issue (2): 209-214.DOI: 10.7623/syxb199202035

• 论文 • 上一篇    下一篇

新疆莎车阿尔塔什剖面白垩—第三系界线的碳稳定同位素异常事件

唐文松1, 钟筱春1, 郭椿杰1, 严正2, 叶莲芳2   

  1. 1. 石油勘探开发科学研究院;
    2. 国家地震局地质研究所
  • 收稿日期:1991-06-05 出版日期:1992-04-25 发布日期:2013-07-08

ABNORMAL EVENT OF CARBON STABLE ISOTOPE AT THE BOUNDARY BETWEEN CRETACEOUS AND TERTIARY IN ALTAX SECTION IN XINJIANG AUTOAORMOUS REGION

Tang Wensong1, Zhong Xiaochun1, Guo Chunjie1, Yan Zhen2, Ye Lianfang2   

  1. 1. Research Institute of Petroleum Exploration & Development;
    2. Institute of Geology, State Seismological Bureau
  • Received:1991-06-05 Online:1992-04-25 Published:2013-07-08

摘要: 新疆莎车阿尔塔什剖面白垩系—第三系界线的碳同位素研究表明,在白垩系—第三系交替时期,碳同位素曾出现明显的负异常,达-3.79‰,变化幅度达6‰,负异常最大值位于原划定的吐依洛克组底界以上1.4m.反映了在吐依洛克组开始沉积后不太长的时期内,地质环境发生了重大变化.

关键词: 新疆, 莎车地区, 白垩纪, 第三纪, 地层剖面, 碳同位素, 同位素异常

Abstract: The results of stable carbon isotope show that obvious carbon isotope negative abnor-mality up to-3.79‰ and a fluctuation up to 6‰,have been found at the transitional time between Cretaceous and Tertiary.The maximun value of negative anomaly occurs at a point of1.4m above the base of Tuilok formation.This indicates that a great change in geological environment took place not too long after the beginning of the deposition at the Tuilok formation.