福建前加里东区域变质岩系的岩石学、地球化学和变质作用特征  

Characteristics of Petrology, Geochemistry and Metamorphism of the Precaledonian Regional Metamorphic Rocks in Fujian Province

作　　者：金文山[1] 庄建民[2] 杨传夏 陈云钊[3] 

机构地区：[1]天津地质矿产研究所 [2]福建省区域地质调查队 [3]闽北地质大队

出　　处：《福建地质》1992年第4期241-262,共22页Geology of Fujian

摘　　要：本区前加里东区域变质岩系可划分为三大岩群,即麻源群,马面山群和长汀浅变质岩系。它们具有不同的岩石学、地球化学和区域变质作用特点。麻源群为早元古代大陆边缘广海盆地的沉积作用产物;马面山群为中元古代内陆裂陷海槽的沉积作用产物;长汀浅变质岩系主要为晚元古代至早古生代内陆裂陷海槽的沉积作用产物。The regional metamorphic rock series in the surveyed area can be divided into three large groups——Mayuan Group, Mamianshan Group and Chanting low-grade metamorphic rock series, for which there are different characteristics of petrology, geochemistry and regional metamorphism. The Mayuan Group is derived from the early Proterozoic sedimentation of the broad oceanic basin of the continental margin and the Mamlanshan Group from the middle Proterozoic sedimentation of the inland rift trough. The Changting low-grade metamorphic rock series are derived from the later Proterozoic-early Palaeozoic sedimentation of the inland rift trough.

关 键 词：浅变质岩系 沉积作用 地球化学 岩石学 变质作用 海盆 早古生代 内陆 东区 区域 

分 类 号：P588[天文地球—岩石学] P534[天文地球—地质学]