| 华北陆台高压麻粒岩－榴闪岩韧性剪切带 |
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| 关键词:high-pressure granulite-garner-amphibolite ductile searing belts crustal evolution North China Platform, |
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| The Ductile Searing Belts of High-Pressure Granulite-Garner-Amphibolite in North China Platform |
| Between the Chongli Complex Group and the Hongqiyingzi Complex Group, the highgrede metamorphic green stone belts of the Jiangouhe and Shuidizhuang Formations of the Lower Subgroup of the Chongli Complex Group,which were intruded by the Xiwanshan granulite complex and Changyukou hypersthene, and the Aijiagou Formation (Khondalite rock series)of the Upper Subgroup of the Chongli Complex Group,and the Jiangouhe Formation and Shuidizhuang Formation of the Lower Subgroup of the Chongli Complex Group there exist three crust-scale ductile shearing belts of high-pressure granulite-gsrnet comphibolite, which originated in the different Periods and under went the different evolutional singes. The characteristic mineral assemblage is garnet-clinopyroxene-plagiodase-guartz of garnet-plagiodase-hornblende with apparent pressure-decreasing texture. The equilibrium condition of relict high-pressure granulite are as high as 820-910℃ and 1. 2-1. 5GPa. It is inferred that they were originated by collision or accretion of different time terrains(microterrains). All the high-grade tectonolithologic units of different time strata-group and metumorphic complexes tube ductile shearing belts of high-pressure granuliie-garnet-amphibolite as their mutual contacts. This feature is almost a general regularity in the Early Precambrian evolution. |
| QIAN Hui-wen,LI Li-bao,GAO Mai,QIU Xiao-ping.1996.The Ductile Searing Belts of High-Pressure Granulite-Garner-Amphibolite in North China Platform[J].Acta Geoscientica Sinica,17(1):19-31. |
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