首页 | 本学科首页   官方微博 | 高级检索  
     检索      

青藏高原东部玛多-沙马地区的重力场与深部构造
引用本文:王谦身,安玉林.青藏高原东部玛多-沙马地区的重力场与深部构造[J].地球物理学进展,2001,16(4):4-10.
作者姓名:王谦身  安玉林
作者单位:1. 中国科学院地质与地球物理研究所,
2. 中国地质大学地球科学院,
基金项目:国家重点基础研究发展计划(973计划),中国科学院科研项目,G1998040800,KZ951-A1-204,KZ95T-06,,
摘    要:根据青藏高原东部玛多-沙马(下察隅)重力剖面的重力数据资料,对该地区的重力场和深部地壳构造特征作了分析研究,提出青藏高原东部的布格重力异常是高原边缘高,内部低,地壳厚度是边缘薄,内部厚,平均地壳厚度为60km左右,在察隅-沙马地区,为负均衡异常区,因此,该地区是属于地壳上升的地区,此项结果,填补了察隅-沙马地区的均衡重力异常的空白。

关 键 词:青藏高原  玛多-沙马地区  重力  地壳构造  地壳厚度
文章编号:1004-2903(2001)04-0004-07

GRAVITY FIELD AND DEEP STRUCTURE OF MADOI-SHAMA REGION IN EASTERN QINGHAI-XIZANG (TIBETAN) PLATEAU
WANG Qian shen,AN Yu lin.GRAVITY FIELD AND DEEP STRUCTURE OF MADOI-SHAMA REGION IN EASTERN QINGHAI-XIZANG (TIBETAN) PLATEAU[J].Progress in Geophysics,2001,16(4):4-10.
Authors:WANG Qian shen  AN Yu lin
Institution:WANG Qian shen 1 AN Yu lin 2
Abstract:According to the gravity data of Madio Shama (Lower Zayul) gravity profile in eastern Qinghai Xizang (Tibetan) Plateau, the gravity field and deep crustal structure are analysed. In this region, features of Bouguer gravity anomalies are higher at the edge of plateau and lower at the interior. The distribution of crustal thickness are relative thin at the edge of plateau and relative thick at the interior. The average crustal thickness is about 60 km. The minus values of isostatic gravity anomlies are shown in Zayul Shama region. It is means that the crust in this region must be raise for the retrieval of its isostasy. These results fill the gaps in isostatic gravity anomalies of Zayul Shama region.
Keywords:Eastern Qinghai Xizang Plateau  Madio  Shama region  Gravity  Crustal structure
本文献已被 CNKI 维普 万方数据 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号