黔东偏碱性超基性岩富含云母原因浅析  

The Reason Discussion of High Mica in Alkalescent Ultrabasic Rock in East Guizhou

作　　者：杨光忠[1] 黄远成[1] 饶红娟[1] 

机构地区：[1]贵州省地矿局101地质队,贵州凯里556000

出　　处：《贵州地质》2015年第2期90-97,共8页Guizhou Geology

基　　金：中国地调局[项目编号1212011220416]镇远马坪地区金刚石远景调查;贵州省国土厅镇远马坪-麻江隆昌金刚石整装勘查;贵州省地矿局黔东地区金刚石找矿成果综合研究和贵州钾镁煌斑岩特征;时代与金刚石成矿条件科研项目

摘　　要：黔东偏碱性超基性岩以富含金云母或钛黑云母为显著特征。分析认为,扬子地台基底固结程度低、盖层厚度大、变形变质浅,含水量大,地台盖层及基底富含的建造水,应大大地参与了偏碱性超基性岩在浅表层次侵位结晶过程中云母的形成,从而导致贵州黔东偏碱性超基性岩云母含量普遍偏高。The alkalescent ultrabasic rock in east Guizhou has a feature that it is rich of phlogopite or titanbiotite. It＇s thought the consolidation degree of Yangzte platform base is low,the over strata thickness is big,the deformation and metamorphism is small,the water content is abundant,the formation water of platform over strata and base should participate in the mica formation of alkalescent ultrabasic rock shallow emplacement crystallization,so it cause the high mica of alkalescent ultrabasic rock in east Guizhou.

关 键 词：偏碱性超基性岩 云母 高含量 分析 贵州 

分 类 号：P588.125[天文地球—岩石学]