青海拉脊山造山带早古生代火山岩  

EARLY PALAEOZOIC VOLCANIC ROCKS IN LAJI MOUNTAIN OROGENETIC BELT,QINGHAI PROVINCE

作　　者：邱家骧[1] 曾广策[1] 王思源[1] 朱云海 

机构地区：[1]中国地质大学

出　　处：《西北地质科学》1995年第1期69-83,共15页Northwest Geoscience

摘　　要：作者对青海拉脊山造山带早古生代火山岩的时空分布进行了简介，对火山岩的系列、类型、名称、组合进行了确定，对火山岩产出的构造环境及演化过程进行了分析，对开合作用的距离、时间、速度进行了估算，对蛇绿岩套特点与古地幔事件进行了讨论，对火山岩岩浆的来源及演化进行了探索。Following a brief introduction to the temporal and spatial distribution of the Early Palaeozoic volcanic rocks in Laji Mountain orogenetic belt,Qinghai Province,the series,types,nomenclature and associations of these rocks are studied.The tectonic setting and evolution process of the rocks are evaluated.The distance,velocity and timing of the orogenetic open-closing are estimated.The characteristics of ophiolite suite and the palaeomantle event are discussed.The origin an4evolution of the volcanic magma are explored.

关 键 词：青海省 拉脊山 造山带 早古生代 火山岩 

分 类 号：P588.14[天文地球—岩石学]