地质通报2016，Vol.35Issue(9)：1512-1516,5.
陕西秦岭元古宇松树沟岩组变质火山岩的地球化学特征及地质意义
Geochemical characteristics and tectonic significance of Proterozoic Songshu-gou Formation volcanic rock in Qinling Mountain, Shaanxi Province
摘要
Abstract
The middle-upper Proterozoic Songshugou Formation is exposed in the south of Zhouzhiheihe Huangcaopo and the north of Zhashuifeng Street. It consists of basic igneous rocks with vesicular structure, amygdaloidal structure and local pillow struc⁃ture, together with small amounts of clastic rocks. The basic igneous rocks experienced amphibolite facies metamorphism. An analysis of the Sognshugou Formation shows that, it is similar to the mid ocean ridge in petrochemical characteristics. The curve is flat, and there exists the enrichment of LREE relative to HREE. The trace element spider diagram shows it is rich in high field elements and large ion lithophile elements. An analysis of the structural environment shows that it is characteristic of the mid ocean ridge.关键词
商丹带/中新元古界/松树沟岩组/洋中脊Key words
Shangdan zone/middle-upper Proterozoic/Songshugou Formation/mid ocean ridge分类
天文与地球科学引用本文复制引用
王新录,杨永成,冯晓强,宇峰,郭俊..陕西秦岭元古宇松树沟岩组变质火山岩的地球化学特征及地质意义[J].地质通报,2016,35(9):1512-1516,5.基金项目
中国地质调查局项目 （）
