地质通报Issue(11)：1768-1777,10.
藏北羌塘南部冈玛错地区展金组玄武岩的成因及其构造意义
Petrogenesis of the basalt of Zhanjin Formation in the Gangmar Co area, southern Qiangtang, and its tectonic implications
摘要
Abstract
There are widespread basic dykes and basalt distributed on the southern side of the Lungmu Co-Shuanghu-Lancang River suture zone trending nearly EW in southern Qiangtang. Basalts occur as interlayers in the Zhanjin Formation. Whole-rock compositions show that the southern Qiangtang basalts are alkaline and rich in Fe+Ti, and exhibit relative enrichment of light rare earth elements (LREE). Based on geochemical diagrams, the authors infer that the southern Qiangtang basalts erupted in an intraplate environment. It is concluded that the basalts in southern Qiangtang were related to the Permian mantle plume activity. The results achieved by the authors provide convincing evidence for the existence of the late Paleozoic mantle plume in southern Qiangtang.关键词
青藏高原/羌塘南部/玄武岩/地球化学/地幔柱Key words
Tibentan Plateau/southern Qiangtang/basalt/geochemistry/mantle plume分类
天文与地球科学引用本文复制引用
王明,李才,解超明,吴彦旺,范建军,徐建鑫..藏北羌塘南部冈玛错地区展金组玄武岩的成因及其构造意义[J].地质通报,2014,(11):1768-1777,10.基金项目
国家自然基金项目（批准号41272240、41072166、41273047）和中国地质调查局项目 （）
