摘要
河南省西峡地区金红石含矿层有三种岩石类型:钙质变质岩、基性变质岩和泥质-长英质变质岩。通过对其含矿层的层位、时代、岩石组合、原岩建造及地球化学特征的研究,认为其原岩为沉积岩和基性火山岩,其形成环境为扬子板块北部古被动大陆边缘的陆缘断陷深海槽。
Rutile-bearing layers in Xixia district,Henan,comprise three types of rock: Metamorphic calcareous rock,basic metamorphic rock and pelitie-felsic metamorphic rock.All of three metamorphic rocks were recognised to derive from primary sedimentary rock and volcanic rock which were subjected to a metamorphic stage in such a environment as the fault sea trough along the passive continental margin north of Yangtze plate.
出处
《化工矿产地质》
CAS
1996年第1期39-46,共8页
Geology of Chemical Minerals
关键词
金红石
含矿层
岩石组合
矿床地质
形成环境
Xixia Henan
rutile-bearing layer
Yangtze plate
passive continertal margin
marginal subsidence
deep trough
