东秦岭-桐柏-大别山碰撞造山带北部早古生代变质火山岩系特征及其形成环境

• THE CHARACTERISTICS OF THE METAVOLCANIC ROCK SERIES OF EARLY PALAEOZOIC ERA AND THE STRUCTURAL ENVIRONMENT OF THEIR GENESIS IN THE NORTHERN PART OF THE EAST QINLING-TONGBAI-DABIE COLLISION TYPE OROGENIC BELT