摘要
着重探讨了凤凰山岩体的地质和地球化学特征,并从地球化学的角度分析了岩体的成因,认为凤凰山岩体为复式岩体,形成于燕山晚期。原始岩浆来源于上地幔碱性玄武岩浆,成岩构造环境为造山带和岛弧环境,成岩过程中经受了钙质围岩的同化混染。
The paper has mainly probed into the geological and geochemical characters of Fenghuangshan rockbody. Based on these, the paper has analysized the genesis of rockbody and pointed out that Fenghuangshan rockbody belongs to complex rockbody.The diagenetic epoch is in the late Yanshan period and the former magma derives from alkali basalt magma of the upper mantle.The diagenetic tectonic setting belongs to the orogenic belt and island arc. The diagenic process has undertaken assimilation and contamination of calcareous wallrock.
出处
《矿产与地质》
2003年第5期627-629,共3页
Mineral Resources and Geology
基金
国家"97 3"项目 <大规模成矿作用与成矿预测 >(G1 9990 43 0 6 )
国家"十五"攻关项目 <大型矿山接替资源探查技术与示范 >(2 0 0 1 BA6 0 9A-0 6 -0 2 )资助
关键词
岩浆岩
地球化学特征
碱性玄武岩浆
上地慢
造山带和岛弧
钙质围岩
geological and geochemical characters
upper mantle
alkali basalt magma
orogenic belt and island arc
calcareous wallrock
