湘赣边境志留纪花岗岩岩石谱系单位特征及侵位机制探讨  

On the rock hierarchical units characteristics and the emplacement mechanism of Silurian granite in the boundary between Hunan and Jiangxi

作　　者：张永忠 吕少伟 邓必荣 

机构地区：[1]江西省地质调查院,江西南昌330201

出　　处：《资源调查与环境》2005年第1期12-18,共7页Resources Survey & Environment

摘　　要：湘赣边境中段出露有黄洋界、汤湖两处花岗岩超单元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 of boundary between Hunan and Jiangxi. Based on emplacement structure, rock assemblage and geochemistry, we divided them into five rock units, which belong to Tanghu superunit. Controlled by sinistral shear stress of the regional major fault during magma emplacement, the granite distributed from the southeast to the northwest.

关 键 词：岩石谱系单位 左旋剪切应力 湘赣边境中段 

分 类 号：P588.12[天文地球—岩石学]