摘要
将铁瓦殿岩体划分为 5个岩石谱系单位 ,厘定为 2个超单元 ,即铁瓦殿超单元和马院子超单元。研究认为 :铁瓦殿超单元形成于消减带活动板块边缘环境 ,其岩浆物质来源于上部地壳 ,以类岩墙扩张形式被动顶蚀上侵定位 ,是新元古代活动陆缘聚合作用的产物 ;马院子超单元形成于造山晚期—晚造山期消减带环境 ,其岩浆物质来源于上部地壳 ,以类岩墙扩张—底劈形式上侵定位 。
The Tiewadian rock mass can be divided into 5 units of rock pedigree and two super units named Tiewadian super unit and the Mayuanzi super unit. The Tiewadian super unit formed in the marginal environment of active plates at subduction zone and the magma materials came from the upper crust, which was localized by upward eroding similar to wall rock. It was the product formed by polymerization of the New Proterozoic active continental margins. The Mayuanzi super unit formed in a subduction environment of the late orogenic period and the magma materials came from the upper crust that localized upward at the pattern of dilation of similar wall rocks bottom cutting. It is the products of the polymerization of inner continent faults and subsidence during the Indosinite Yanshanite period
出处
《陕西地质》
2001年第2期29-39,共11页
Geology of Shaanxi
基金
马池幅
汉王城幅
瓦房店幅 1:5万区调联测项目
编号 :QD970 3
