Abstract
Integrating geophysical data of seven Geoscience transects (GGT), we make a study on the geophysical characteristic model of the crust and mantle along the Daxinganling gravitational gradient zone. We analyze three kinds of factors generating the geophysical characteristics, namely mantle current, mantle plume and motions of three plates around the continental margin of East Asia. The forward fitting results of the gravity anomaly along the Daxinganling gravitational gradient zone indicate that the gravity anomaly of the zone is produced by the combination of the substance density variation in the crust and upper mantle and the Moho undulation. The stress fields crossed at the continental margin in East Asia and formed a series of the geophysical characteristics along the gravitational gradient zone. At last, we study the genesis mechanism of the gravitational gradient zone along the Daxinganling Mountain-Taihang Mountain-Wuling Mountain, and present a triple-junction model with dynamic force of compressive stress and upwelling action.
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