苏东北多期A型花岗岩及其成岩构造环境  

A-type Granite of Multiple-stages and Their Diagenetic Tectonic Environment in Northeast Jiangsu Province

作　　者：樊金涛[1] 

机构地区：[1]江苏省地质调查研究院,江苏南京210018

出　　处：《江苏地质》2001年第4期206-214,共9页Jiangsu Geology

基　　金：江苏省东北部地区 1:5万区调片区总结 ( 1999)

摘　　要：江苏东北部地区有宋山、牛山和踢球山 3种A型花岗岩 (类 )。其中宋山岩体属A1亚型花岗岩类 ,形成于晋宁期苏胶造山带同造山的郯庐走滑断裂带的拉张环境 ;牛山岩体属A2 亚型花岗岩 ,形成于震旦期苏胶造山带碰撞造山后的拉张环境 ;踢球山岩体属A1-A2 过渡亚型花岗岩 。Three kinds of A-type granitoids are occurred in Songshan,Niushan and Tiqiushan of the northeast areas in Jiangsu.In which,Songshan rockmass is deemed to be granite of A 1 subtype,formed in an extensional environment of Sujiao orogenic belt in Jinning stage and the orogenic Tanlu strike-slip fracture belt;Niushan rockmass is deemed to be granite of A 2 subtype,formed in an extensional environment of Sujiao orogenic belt of collision post-orogenesis in Sinian stage;Tiqiushan rockmass is deemed to be granite of A 1-A 2 transitional type,formed in an extensional environment of inter-terrigenous post-orogenesis of Sujiao orogenic belt in Yanshan stage and Tanlu fracture belt.

关 键 词：A型花岗岩 苏胶造山带 江苏 燕山期 郯庐断裂带 

分 类 号：P588.21[天文地球—岩石学]