Abstract

The regional gravity field and residual gravity anomaly in the Qinling-Dabie area were separated for the first time, which might be produced by the relief of the Moho and the inhomogeneity of crust, separately. The residual anomalies show that there are two Mesozoic subducting magmatic rocks belts. The northern belt includes West Qinling magmatic rock belt and East Qinling magmatic rock belt and extends through Nanyang Basin and dies out to the west of Fuyang. The southern belt coincides with Tongbai-Dabie area. To the west of East Qinling there is also a residual gravity low which might coincide with early Paleozoic depression.

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