Precambrian crustal evolution in Rangrim Massif,Korean Peninsula  

作　　者：LYANG To Jun LIU Yongjiang YANG Jong Hyok KIM Hon HAN Ryong Yon KIM Jong Nam 

机构地区：[1]Department of Geology, Kim II Song University, Pyongyang, DPR of Korea [2]College of Earth Sciences, Jilin University, Changchun 130061, China [3]Institute of Geology, State Academy of Science, Pyongyang, DPR of Korea

出　　处：《Global Geology》2009年第2期57-63,共7页世界地质（英文版）

摘　　要：Petrological,chronological and geotectonic geological analysis of Precambrian metamorphic rock in Korean Peninsula shows that the remnants(>3.4 Ga) of continental nuclei crust were formed in the Paleoarchean in the Rangrim Massif.In the massif,the main formation ages of continental crust range from 3.2 Ga to 2.5 Ga,its important growing period was 2.8-2.5 Ga.The subsequent expansion period of the Rangrim Massif was 2.4-2.2 Ga.The division events occurred in 1.85 Ga and in the Late Paleoproterozoic--Early Mesopro-terozoic,respectively.Since then the massif was relatively stable.However,the last division of the Rangrim Massif occurred at 793 Ma.Petrological, chronological and geotectonic geological analysis of Precambrian metamorphic rock in Korean Peninsula shows that the remnants （ 〉3.4 Ga） of continental nuclei crust were formed in the Paleoarchean in the Rangrim Massif. In the massif, the main formation ages of continental crust range from 3.2 Ga to 2.5 Ga, its important growing period was 2.8 - 2. 5 Ga. The subsequent expansion period of the Rangrim Massif was 2. 4 - 2. 2 Ga. The division events occurred in 1.85 Ga and in the Late Paleoproterozoic-Early Mesoproterozoic, respectively. Since then the massif was relatively stable. However, the last division of the Rangrim Massif occurred at 793 Ma.

关 键 词：Korean peninsula Rangrim massif PRECAMBRIAN Paleoarchean continental nucleus Korea-China Craton 

分 类 号：P597.3[天文地球—地球化学]