【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。更多还原

【Abstract】 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.更多还原