Rhyolites相关论文
浙西开化地区皖浙边界断裂带西侧浅变质岩系中发育了一套以流纹岩为主的酸性火山岩。两个流纹岩样品的锆石LA-ICP—MSU-Pb定年分别......
大兴安岭北部早白垩世上库力组流纹岩具有富碱(w(K2O+Na2O)〉6.10%)、高w(K2O)(3.25%~5.30%)、高K2O/Na2O(0.67~2.48)的特点,属于高钾钙碱性系列......
为了确定大兴安岭北段克-河地区的满克头鄂博组形成时代及其构造环境,对满克头鄂博组流纹岩开展年代学、岩石地球化学的研究。年代......
大兴安岭地区晚侏罗世-早白垩世流纹岩类广泛分布。根据岩石学和微量元素地球化学特征浆其划分为两类,分别称其为Ⅰ型流纹岩和Ⅱ型流......
Petrology of Metaluminous A-Type Rhyolite Discovered from Hadjer el Hamis Volcanoes (Lake Chad Basin
Metaluminous (P.I. > 1) rhyolite from Hadjer el Hamis consisted of quartz, alkali feldspar, clinopyroxene (hedenbergite)......
Geochemistry,petrogenesis and tectonic implication of Early Cretaceous A-type rhyolites in Hailar Ba
Early Cretaceous A-type rhyolites of the Shangkuli Formation in the Hailar Basin of NE China exhibit geochemical charact......