新疆石油地质 ›› 1997, Vol. 18 ›› Issue (1): 38-38.

• 地球物理勘探 • 上一篇    下一篇

塔里木盆地的古陨石坑

张传绩   

  1. 新疆石油管理局勘探开发研究院 克拉玛依 834000
  • 收稿日期:1996-08-08 发布日期:2021-01-18
  • 作者简介:张传绩,高级工程师 地球物理勘探

ANCIENT METEORITE CRATER IN TARIM BASIN

Zhang Chuanji   

  1. Research Institute of Exploration and Development, Xinjiang Petroleum Administration Bureau, Karamay 834000
  • Received:1996-08-08 Published:2021-01-18
  • About author:Zhang Chuanji,Senior Engineer, Geophysical Prospecting

摘要: 塔里木盆地东部满加尔地区在中新世曾发生一-次大陨石撞击事件,形成了直径约15km深约2km的近圆形古陨石坑。坑内堆积了一套较粗的快速堆积物,构成了地屣时间剖面上的盆状异常体,由于异常体的地震波传播速度较高,造成了下伏层穹窿状构造假像。

关键词: 塔里木盆地, 满加尔, 中新世, 陨石, 速度异常, 地震陷阱

Abstract: An important meteorite collision event occurred in the Miocene in Mangar area, eastern Tarim basin, resulted in a subround ancient meteorite crater with diameter of 15 km and depth of 2 km. A suite of coarse deposits in meteorite crater resulted in basin-shaped seismic anomaly in time section which in tum caused the dome structure pseudomorph in the underlying strata due to its high seismic velocity.

Key words: Tarim basin, Mangar, Paleocene, Ancient, Meteorite, Velocity anomaly, Seismic pitfall