甘肃北山红石山基性-超基性岩体的成因类型及构造意义
王小红;杨建国;谢燮;王磊
【期刊名称】《西北地质》 【年(卷),期】2013(046)001
【摘要】红石山基性-超基性岩体是板块构造研究者重点关注的岩体之一,通过岩体地质特征及系统的岩石化学、微量元素、稀土元素等研究,探讨了红石山基性-超基性岩体的成因类型和形成构造环境.根据岩体的岩石类型组合、相带产出关系、纯橄岩离析体的发育、岩体内部流动构造、晚期多种岩脉和铬铁矿矿化类型等特征研究表明,岩体应是一种岩浆类型的侵入体；从岩石化学、微量、稀±元素地球化学特征上可反映出该岩体是晚古生代(石炭-二叠纪)时期与古亚洲大洋在向南消之闭合其间,于雀儿山-英安山岛弧带南缘发育起来的一种弧后盆地裂谷类型的地幔岩浆作用产物,其机制或动力学环境为一种弧后扩张,地幔上隆的大陆裂谷岩浆作用机制.osic-ultrabasic rocks of Hongshishan is plate tectonics researchers focus on one of the rock. The genetic type and tectonic setting of Hongshishan basic-ultrabasic rocks are discussed by the rock chemistry, trace elements, rare elements. Studies have shown that rock types based on combination of rock, compared with the output relations, segregation dunite body' s development, the internal flow structure rock, late dykes and chromite mineralization of various types of rock should be akinds of intrusions of magma types; from petrochemistry, trace, rare earth element geochemistry of the rock is reflected in the late Paleozoic (Carboniferous -Permian) period and
甘肃北山红石山基性-超基性岩体的成因类型及构造意义
