【摘 要】
:
雪龙山变质带由古—中元古代工江岩组、中梁子岩组、阿马普岩组及四十驮岩组和白龙里吾巴片麻岩、大宝山片麻岩,以及印支期叠加的箐口塘等两个糜棱岩带所组成。经历了以晋宁期
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雪龙山变质带由古—中元古代工江岩组、中梁子岩组、阿马普岩组及四十驮岩组和白龙里吾巴片麻岩、大宝山片麻岩,以及印支期叠加的箐口塘等两个糜棱岩带所组成。经历了以晋宁期为主,叠加了华力西期、印支期等多期变质,产生了三期结晶面理,主期变质达高绿片岩相→低角闪岩相中压区域动力热流递进变质;受到了同变质期和叠加了喜马拉雅期多期构造变形。原岩为古—中元古代大陆边缘增生复理石建造和钾质花岗岩建造。
The Xuelongshan metamorphic belt consists of the Proterozoic-Mesoproterozoic Jiangong Formation, Zhongliangziyan Formation, Amapu Formation and the Baoturui Formation and the Bailongliuobaabean gneiss, the Dabaoshan gneiss, and the Indo-China Period superimposed 箐 mouth Tong and other two mylonite belt formed. Experienced mainly Jinning period, superimposed Variscan, Indosinian and other multi-stage metamorphism, resulting in the third phase of crystallization, the main metamorphism of high greenschist facies → low amphibolite facies in the area of regional pressure The heat flow is progressive metamorphism; subjected to the same metamorphic period and superposed multi-stage structural deformation of the Himalayan period. Proterozoic is Paleo-Proterozoic continental margin accretionary flysch constructed and potassic granite.
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