摘要
Intracontinental block rotation is the result of interaction between crustal tectonic environment and tectonic activity in the lithospheric mantle. Paleomagnetic studies on the Cretaceous and Paleogene rocks from 51 sampling sites in the eastern Heilongjiang Province confirm that the Muling, Jixi, Qitaihe and Huanan areas in the east of the Mudanjiang fault are subjected to counterclockwise rotation of about 30°~40° relative to stable North and South China blocks and Eurasia since the Late Cretaceous. The differential rotation of the eastern North China and the Far Eastern Russian areas is probably due to the re-activation of the Mudanjiang fault and the subduction of the Pacific Plate since the Cretaceous.