康定杂岩中钠质花岗岩类的地球化学特征

来源 :四川地质学报 | 被引量 : 0次 | 上传用户:dartal_1999
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前震旦纪康定杂岩中钠质花岗岩类,分布在四川康定至渡口一带,岩体多由规模宏大的岩基产出,呈南北向线性展布,出露面积达3000平方公里,向北东延伸与彭灌杂岩、汉南杂岩断续相连。岩石组合为闪长岩一石英闪长岩—英云闪长岩—花岗闪长岩,其中以石英闪长岩与英云闪长岩占绝对优势。其成因从30年代至今历来存在混合说和岩浆说两种观点。近年来我们结合地球化学研究,认为钠质花岗岩类具典型岩浆岩特征。 Pre-Sinian Kangding complex of sodium granites, located in Kangding, Sichuan to ferry area, rock mass produced by the large-scale rock outcrops, was linear distribution of north-south, exposing an area of ​​3,000 square kilometers, to the north-east Extension and Peng influx, Hannan complex intermittently connected. The rock assemblage is a diorite-quartz diorite-diorite-granodiorite, of which quartz diorite and dioritic diorite are dominant. Its causes from the 1930s up to now there are two kinds of mixed theory and magma point of view. In recent years, we combined geochemical research, that the type of calcareous rocks with typical characteristics of sodium.
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