山东沂水汞丹山凸起麻粒岩相岩石特征及其地质意义          下载免费PDF全文

金隆裕  阎守民  周志胜  牛良柱 《山东国土资源》1988,(2)

汞丹山凸起的麻粒岩类岩石可分为二辉麻粒岩、角闪二辉麻粒岩和紫苏混合花岗岩等。其主要矿物有斜长石(Anzb-34)、紫苏辉石、单斜辉石、普通角闪石、黑云母、条纹微斜长石、石英等。副矿物有磁铁矿、磷灰石、锆石、石榴石、金红石等。借助于多勃列佐夫(1971)的判别式,判别本区二辉麻粒岩类岩石属较低温的角闪麻粒岩亚相。按不同计算公式估算: 麻粒岩相形成温度为898.8℃、828.2℃、957.7℃;形成时的压力低于0.5GPa。  相似文献   

胶北地块与金矿有关的花岗岩类的研究---第一章 胶北地块的地质发展史          下载免费PDF全文

徐金芳  沈步云  牛良柱  郑文深 《山东国土资源》1989,(2)

Jiaobei block is well known as rich in gold mineral resources. The gold mineralization is closely related to granitoids, but there are different views about the age of granits and the type of granitoids with which gold mineralization is associated. Based on the study of petrology, mineralogy, geochemistry and isotopic geology of the granitoids, enclaves and viens in this region, some conclusions are obtained.  相似文献