Ediacarian Volcanic Rocks and Basic Dikes from the Lac Ifni Sector of the Central High Atlas Mountains:Petrographic Studies and Clinopyroxene Chemical Composition  

作　　者：Sad Belkacim M.Ikenne S.Arai H.Gahlan A Ahmed Hassan Y.Ishida 

机构地区：[1]Laboratoire de Géologie Appliquée Et Géo-environnement,Faculte Des Sciences,Université Ibn Zohr [2]Department of Earth Sciences,Kanazawa University [3]Department of Geology,Faculty of Science,Assiut University [4]Department of Geology,Helwan University

出　　处：《地学前缘》2009年第S1期198-198,共1页Earth Science Frontiers

摘　　要：The Ediacarian volcanic series from the Lac Ifni sector are composed of a large variety of rocks from basalts and rhyolites to intermediates facies such as andesites,rhyodacites and pyroclastites.All these rocks are intruded by dolerite dikes.Secondary processes are reflected by total serpentinization of olivine within basic andesite and by albitization

关 键 词：High ATLAS MOUNTAINS Anti ATLAS MOUNTAINS VOLCANISM Ediacarian CLINOPYROXENE ICP-MS Laser orogenic calc-alcaline THOLEIITIC 

分 类 号：P588.1[天文地球—岩石学]