Numerical modeling of mantle diapirism as a cause of intracontinental rifting

作者：Polyansky O P^*; Korobeynikov S N; Babichev A V; Reverdatto V V; Sverdlova V G

来源：Izvestiya-Physics of the Solid Earth, 2014, 50(6): 839-852.

DOI：10.1134/S1069351314060056

The numerical model of mantle diapirism and active rifting is developed. The model describes the possibility of extension and thinning of the Earth%26apos;s crust under the action of a local 100-km long heat source in the sublithospheric mantle, which causes melting and rising of the magmatic diapir through the cratonic lithosphere. The model combines the mechanisms of the uplifting of the anomalously hot material due to its gravitational instability, underplating of magma beneath the continental crust, and its extension by the forces of the convective flows at the base of the plate. The obtained results shed light on some geological features of the joint formation of the large Vilyui igneous province and Vilyui sedimentary basin.

• 出版日期2014-11