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SYNTHESIZED STUDY ON THE GEOPHYSICS OFMANZHOULI-SUIFENHE GEOSCIENCE TRANSECT,CHINA

YANG BAO-JUN; MU SHI-MIN; JIN XU; LIU CAI(Changchun University of Earth Sciences,Changchu 130026, China)  
This paper generalized the geophysical achievement of Manzhouli-Suifenhe geoscience transect.The transect is 1300 kilometers long,going through the magmatic belts of Daxinganling and Zhangguangcailing in north-east of China,the basins of songliao and Hailer,and the faults of Dunhua-Mishn and Jiamus-Yitong belonging to the north part of Danlu Fault.By linked with geologlcal data,we interpreted the multimethod geophysical data along the transect,which include the gravity,magnetism,MT,seismic(wide-angle seismic sounding, vertical reflection seismic and the natural earthquake),geotherm,archaeomagnetism and sythesized interpretation,and gived geophyslcal interpretation model of lithosphere structure of the transect.The paper also dissussed the features of basement in the basin of Songliao and Moho interface,the character of the gravity gradient belts in Daxinganling,and the process of the landblock's matching in transect region.From that This paper can conclude that the land of north-east Asia is a matched accretion continent having a new kind of structure of basin and mountain in the world,which was formed by the way that the small land block was collided to match,simultaneously affected by the stress field of oceanic plate subduction.
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