洞子沟地区大红峪组富钾火山岩岩石学、地球化学特征  

Petrological and Geochemical Research on Dahongyu Ultra-potassic Volcanic rocks in Dongzigou Area,Hebei Province

作　　者：丁建华[1] 肖成东[2] 秦正永[3] 

机构地区：[1]中国地质大学,北京100083 [2]天津华北地质勘查局,天津300181 [3]天津地质矿产研究所,天津300170

出　　处：《地质调查与研究》2005年第2期100-105,共6页Geological Survey and Research

摘　　要：从矿物学、岩石学、地球化学等角度对大红峪组火山岩特征进行了详细研究,认为大红峪组火山岩为一套特殊的超钾质火山岩,形成于夭折的大陆裂谷环境,成岩物质来源于上地幔,同时混染了部分下地壳物质,这也是岩石富钾的原因。Based on the study of the mineralogy, petrology and geochemistry, the author suggested that Dahongyu volcanic rock is a special ultra-potassic association. It formed in the continental rift setting that aborted shortly after the beginning. The rock-forming materials came from upper-mantle and contaminated the under crust material, which is also the reason of its high potassium.

关 键 词：大红峪组 地球化学特征 岩石学 富钾火山岩 超钾质火山岩 成岩物质来源 裂谷环境 地壳物质 矿物学 上地幔 

分 类 号：P534.3[天文地球—古生物学与地层学] P618.51[天文地球—地质学]