罗霄山脉中段志留纪花岗岩岩石谱系单位特征及侵位机制探讨  

A DISCUSSION ON THE CHARACTERISTICS OF ROCK HIERARCHI CAL UNITS AND THE EMPLACEMENT MECHANISM OF SILURIAN GRANITE IN THE MIDDLE SECTION OF LUOXIAO MOUNTAINS

作　　者：邓必荣[1] 王迪文[1] 石鉴东[1] 

机构地区：[1]江西省地质调查院,江西南昌330201

出　　处：《江西地质》2001年第3期171-175,共5页Jiangxi Geology

摘　　要：罗霄山脉中段出露有黄洋界、汤湖两处花岗岩岩基和同时期侵位的岩株、岩瘤,其成岩时代属志留纪,按其侵位构造、岩石组合、地球化学等特征,可建立5个岩石单元,归并为汤湖超单元。岩浆的侵位受区域性大断裂左旋剪切应力控制,空间上呈现由南东往北西逐渐变新的特点。Two Silurian granite batholiths with contemporaneous stocks and bosses are exposed respectively in Huangyangjie and Tanghu in the middle section of Luoxiao mountains.Based on emplacement structure,rock assemblage and geochemistry,a Tanghu super-unit consisting of5rock units can be established.Controlled by sinistral shear stress of a regional major fault during magma emplacement,the distribution of the granite displays a northwestward younging pattern.

关 键 词：岩石谱系单位 左旋剪切应力 罗霄山脉 志留纪 花岗岩 侵位机制 地质构造 

分 类 号：P588.121[天文地球—岩石学]