中国地质Issue(5)：1179-1187,9.
西藏东坡蛇绿岩体深部结构的地球物理特征及其找矿意义
Geophysical characteristics and prospecting significance of deep structures in Dongpo ophiolite body, Tibet
摘要
Abstract
Geophysical survey of Dongpo rock mass on the south bank of Yarlung Zangbo River in western Tibet was carried out using multiple methods, and the inversion of aeromagnetic survey anomaly precisely positioned by ground magnetic survey revealed the range of the deep magnetic body in Dongpo rock mass; seismic reflection survey delineated the weak reflection places under the rock mass with reflected wave characteristics different from those of outcropping ophiolite body; meanwhile,as confirmed by MT method, the low- resistivity bodies under the rock mass are at the roughly identical places. The outcropping ophiolite body extends downward, resembling a pot bottom as a whole, and its middle part is characterized by low resistivity and weak reflected wave. In addition, magnetic minerals are relatively developed at the depths of 1.5km-3.0 km, which might be the very section of chromium-bearing rock mass having strong mineralization and alteration; the similar characteristics were observed in the Luobusha mining area, and hence these places are favorable for ore prospecting.关键词
东坡蛇绿岩体/反射地震/航磁异常/电阻率异常/找矿模型Key words
Dongpo ophiolite body/seismic reflection/aeromagnetic and resistivity anomaly/prospecting model/geophysical characteristics分类
天文与地球科学引用本文复制引用
姜枚,郭帅,宋昊翔,杨经绥,谭捍东,钱荣毅,张聿文,彭淼,许乐红,张立树,李庆庆..西藏东坡蛇绿岩体深部结构的地球物理特征及其找矿意义[J].中国地质,2015,(5):1179-1187,9.基金项目
大陆科学钻探选址与钻探实验项目（SinoProbo-05-07）资助。 （）
