地震地质 ›› 1995, Vol. 17 ›› Issue (2): 109-113.

• 科研简报 • 上一篇    下一篇

山西五台地区壳内低速体的重力异常的研究

方盛明1, 余钦范1, 楼海1, 邢集善3   

  1. 1. 国家地震局地球物理勘探大队, 郑州, 450003;
    2. 中国地质大学(北京), 北京, 100083;
    3. 山西省地质矿产局物理探矿队, 运城, 044004
  • 收稿日期:1993-10-31 修回日期:1994-06-30 出版日期:1995-06-07 发布日期:2009-11-25

STUDY OF GKAVITY ANOMALY IN CRUSTAL LOW VELOCITY ZONE IN THE WUTAI REGION

Fan Shengming1, Yu Qingfan1, Lou Hai1, Xing Jishan3   

  1. 1. Geophyxicul Prospecting Brigade, SSB, Zhrngzhou 450003;
    2. China University of GeosciencesBeijing, Beijing 100083;
    3. Physical Prospecting Brigade, Bureau of Geological Mineral Resources of Shanxi Province, Yuncheng 044004
  • Received:1993-10-31 Revised:1994-06-30 Online:1995-06-07 Published:2009-11-25

摘要: 运用健全的极大似然法对山西五台地区中、下地壳中存在的低密度(低速度)异常体进行了三维反演,求出该异常体的空间赋存状况,并结合浅层局部重力负异常及其它地球物理特征进行地质解释,还就其形成机制进行了讨论。

关键词: 低波速带, 重力异常, 三维重力反演, 山西

Abstract: This paper deals with three dimensional inversion of low density(low velocity)anomalous zone in the middle and lower crusts in the Wutai region by use of the method of robust maximum likelibood to obtain its spatial existence for this anomalous zone and to carry out a geological in-terpretation along with shallow local negative anomaly of gravity as well as other geophysical characteristics. Their mechanism has been descussed as well.

Key words: Low-velocity zone, Gravity anomaly, Three-demensional gravity inversion, Shanxi