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第 15 卷第 3 期地学前缘(中国地质大学(北京) ; 北京大学) Vol. 15 No. 3
2008 年 5 月 Earth Science Frontiers (China University of Geosciences ,Beijing ; Peking University) May 2008
中国东部燕山期和四川期岩石圈构造滑脱与岩浆起
源深度
万天丰1 ,2 2, 2 王亚妹3 , 刘2 2俊来1 ,2
1 中国地质大学地质过程与矿产资源国家重点实验室, 北京 100083 2 1 1
2 中国地质大学(北京) 地球科学与资源学院, 北京 100083
3 北京大学地球与空间科学学院, 北京 100871
Wan Tianfeng1 ,2 , Wang Yamei3 , Liu J unlai1 ,2
1 S tate Key L aboratory of Geological Processes and Mineral Resources , China Universit y of Geosciences , Bei j ing 100083 , China
2 School of Earth Sciences and Resources , China Universit y of Geosciences ( Bei j ing) , Bei j ing 100083 , China
3 School of Earth and S pace Sciences , Peking Universit y , Bei j ing 100871 , China
Wan Tianfeng , Wang Yamei , Liu Junlai Detachments and magmatic source depth in lithosphere of Eastern China during Yans
hanian and Sichuanian stages Earth Science Frontiers ,2008 ,15( 3) :001 035
Abstract : It is an important project for present tectonics to precisely research the time and space of the detach
ment formation in the lithosphere in geological history It is a feasible research method that through collecting a
lot of data of magmatic source depths in Eastern China during the Yanshanian (205 135 Ma) and Sichuanian
(135 52 Ma) tectonic stages to determine the local tectonic detachment , the partial decoupling and the interac
tion between spheres in the lithosphere or at the bottom of the lithosphere The results showed that the tectonic
detachment , the partial decoupling and the interaction between spheres were exhibited and concentrated at the
intersection of the middle crust , the Moho and the regional main faults of Eastern China during Yanshanian and
Sichuanian tectonic stages , however , at the bottom of the lithosphere does not exist obvious detachment or
migration in those stages The violent magmatic area of Eastern China during the J urassic