陕西宁陕—户县地区商丹构造带北侧TTG岩系元素地球化学及其构造意义  

GEOCHEMISTRY AND STRUCTURAL SIGNIFICANCE OF THE ELEMENTS IN THE TTG ROCK SYSTEM ON THE NORTH SIDE OF THE SHANGXIAN-DANFENG STRUCTURAL ZONE IN NINGSHAN-HUXIAN DISTRICT,SHAANXI PROVINCE

作　　者：计文化 崔建堂 李海平 

机构地区：[1]陕西省地矿局区研院,咸阳712000

出　　处：《陕西地质》2001年第1期24-29,共6页Geology of Shaanxi

摘　　要：陕西宁陕—户县地区商丹构造带北侧发现的花岗质片麻岩为古老侵入体 ,主要由黑云斜长片麻岩、黑云角闪斜长片麻岩、角闪斜长片麻岩等类型岩石组成 ,具有TTG岩系的组成特征 。The granite gneiss found in the north side of the Shangxian Danfeng structural zone is a paleo intrusive in Ningshan Huxian area of Shaanxi Province. This paleo intrusive is mainly composed of the rocks of biotite anorthosite gneiss, biotite amphibole plagiogneiss and hornblende plagiogtneiss. It has the composition features of the TTG rock system. The element geochemical features indicate that it formed in a structural environment like to island arc.

关 键 词：花岗质片麻岩 地球化学 构造环境 灰色片麻岩 稀土元素 

分 类 号：P588.345[天文地球—岩石学] P595[天文地球—地质学]