地质与资源2019，Vol.28Issue(2)：128-133,148,7.
中亚造山带东部非典型辉绿结构辉绿岩的岩相学特征及鉴定
PETROGRAPHY AND IDENTIFICATION OF THE ATYPICAL OPHITIC DIABASES IN EASTERN CENTRAL ASIAN OROGENIC BELT
摘要
Abstract
Hornblende metamorPhic diabase is found in the eastern tectonic zone of Central Asian Orogenic Belt. Its PetrograPhical features Present atyPical oPhitic texture,as blastodiabasic texture and blastoPhitic Poikilitic texture,with major minerals of Plagioclase and hornblende and minor clinoPyroxene and actinolite. The whole rock Petrochemical analysis results show that the chemical comPositions in the samPles include SiO2(49.15%-52.96%),Na2O+Κ2O(2.71%-5.07%),CaO(7.07%-10.40%),Al2O3(14.77%-17.31%),TFeO(8.80%-12.27%),and MgO(6.45%-9.57%). The data fall into the basalt area in the volcanic rock TAS classification diagram,belonging to basic rock,which confirms the naming of the hornblende metamorPhic diabase with atyPical oPhitic texture. The hornblende metamorPhic diabase underwent retrometamorPhism with the basic Plagioclase(labradorite)turned to intermediate Plagioclase(andesine)and further to albite or sodium oligoclase,while the clinoPyroxene is metamorPhosed to hornblende,and then to actinolite.关键词
中亚造山带东部/非典型辉绿结构/变质辉绿岩/岩相学/岩石化学Key words
eastern Central Asian Orogenic Belt/ atyPical oPhitic texture/ metamorPhic diabase/ PetrograPhy/Petrochemistry分类
天文与地球科学引用本文复制引用
钟辉,刘欣,伍月,杨雅军..中亚造山带东部非典型辉绿结构辉绿岩的岩相学特征及鉴定[J].地质与资源,2019,28(2):128-133,148,7.基金项目
中国地质调查局"东北基础地质综合调查与片区总结"项目(编号 1212011220435). （编号 1212011220435）
