摘要
贵州中西部以广布峨眉山玄武岩著称,而东部地区,处在扬子地台与江南陆块这一特殊的地质构造部位上,岩体分布较中西部地区,由酸性～基性～超基性岩均有见及,出露种类齐全、分布面积有限,特别是沿北向南基性～超基性岩局地成群成带小规模集中分布。基于研究区内以往物探工作程度低,对出露火山岩、侵入岩的物性系统研究不足,这里以研究已知岩体上的重磁异常响应(值)特征的变化为主线,结合已知岩体分布、重磁异常的对应规律、有限的物性资料以及邻邦广西桂北一带的物性等信息,对研究区内可能存在的隐伏岩体进行初步圈定。共推断了17处花岗岩,21处基性～超基性岩,绘制了贵州东部岩体"一张图",基本反映了研究区内的客观地质现象和地质作用结果。
It is remarkable for wide area Mount Emei basalt in central and weatern Guizhou.While in the eastern area,It is in the Yangtze platform and Jiangnan landmass which is a special geological structure location,and the rock mass is distributed in center-west region with acidic-mafic-ultramafic rocks exposed range,and the distribution area is limited,especially along the North to South ultrabasic rocks with small scale centralized distribution in local communities.Based on the previous work in geophysical exploration degree is low,and it is fall short of property system research on the outcropping of lava and intrusive rock,so this paper studies the known rock on the gravity and magnetic anomaly response(value) characteristic changes as the main line,combined with the known distribution of rock mass,gravity and magnetic anomalies corresponding laws,limited physical property data and the property information in north of neighbor Guangxi province,and the hidden rock bodies are preliminary delineated in the research area.A total of 17 granite as well as 21 ultrabasic rock are inferred,drawing a rock map of 'Eastern Guizhou'.It basically reflects the objective geology in the research area.
出处
《物探化探计算技术》
CAS
CSCD
2012年第4期449-454,368,共6页
Computing Techniques For Geophysical and Geochemical Exploration
基金
贵州省优秀科技教育人才省长专项资金项目(黔省专合字(2009)70)
贵州省2010度公益性
基础性地质工作项目(项目序号5)
