New Data on the Crust and Upper Mantle Structure of the Southeast China Obtained from Statistical Processing Results of Gravity Anomalies,Russian Journal of Pacific Geology

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New Data on the Crust and Upper Mantle Structure of the Southeast China Obtained from Statistical Processing Results of Gravity Anomalies
Russian Journal of Pacific Geology ( IF 0.8 ) Pub Date : 2020-04-08 , DOI: 10.1134/s1819714020020062
A. M. Petrishchevsky

Based on statistical processing of gravity anomalies and tectonic interpretation of 3D distributions of density contrast in the crust and upper mantle of Southeast China, new features of rheological layering of the tectonosphere are revealed. Relations of near-surface geological structures with a deep tectonosphere structure in this region are defined. New data on deep relationship of lithospheric segments of a different rank are obtained: splitting, underthrusting, thrusting, and strike-slip fault in the different depth ranges of geological space. Hidden tension zones in the lower crust and subcrustal mantle have been revealed. New assessments independent of the previous were obtained on the lithosphere thickness, subcrustal and asthenosphere layers of lowered viscosity, and their location in geological space. Rheological layering of the crust and upper mantle of Southeast China produces new features of the collision and subduction of the lithosphere segments, which are universal of the West Pacific continental margin.

更新日期：2020-04-08

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