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| TRANSITION FROM PALEO-ASIAN OCEAN DOMAIN TO CIRCUM-PACIFIC OCEAN DOMAIN FOR THE JI-HEI COMPOSITE OROGENIC BELT: Time Mark and Relationship to Global Tectonics |
| PENG Yu-jing1, QI Cheng-dong1, ZHOU Xiao-dong1, LU Xing-bo1, DONG Hong-chen1, LI Zhuang2 |
1. Jilin Institute of Regional Geological Survey, Changchun 130033, China;
2. College of Earth Sciences, Jilin University, Changchun 130061, China |
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Abstract The rhythmic coupling of geological events of tectonic movement, magmatism, metamorphism, deposit formation and so on indicate that, for the Ji-Hei composite orogenic belt, the ending time of the Paleo-Asian Ocean tectonic domain is 250-230 Ma; while the starting time of the Pacific Ocean tectonic domain is 227-222 Ma. From the view of global tectonics, they are constrained by the forming time of Pangaea (330-230 Ma) and its first splitting time (224 Ma) after it entered the new super-continent cycle(230-0 Ma).
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Received: 24 October 2011
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2012, Vol. 21 
