西藏东部隐爆角砾岩特征及其含矿性  

Geological characteristics and ore contents in the cryptoexplosive breccias from eastern Xizang

作　　者：林仕良[1] 雍永源[1] 高大发[1] 

机构地区：[1]成都地质矿产研究所,四川成都610082

出　　处：《沉积与特提斯地质》2003年第3期49-53,共5页Sedimentary Geology and Tethyan Geology

摘　　要：西藏东部发育大量与喜马拉雅期斑岩密切共生的隐爆角砾岩筒(脉)。隐爆角砾岩大都遭受强烈的矿化蚀变,其中的成矿元素金、银、汞等强烈富集。包裹体和同位素的资料证实爆破流体是一种与岩浆有成因联系的、介于岩浆与岩浆期后成矿热液之间的过渡性高温流体。The large quantities of cryptoexplosive breccia pipes (veins) from eastern Xizang are found to be associated with the Himalayan porphyries. These cryptoexplosive breccias have almost been subjected to intense mineralization and alteration, and are rich in gold, silver and mercury. Integration of inclusion and isotopic data show that the explosive fluids from which the cryptoexplosive breccias are originated should be considered as the intermediate high-temperature fluids that may be associated with magmas and postmagmatic ore fluids.

关 键 词：隐爆角砾岩 含矿性 西藏东部 包裹体 同位素 过渡性高温流体 

分 类 号：P588.13[天文地球—岩石学]