The forearc extension in the Central Kuril Islands and the trench rollback


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Resumo

On the basis of bathymetric and seismic data, obtained during cruises 37 (2005) and 41 (2006) of R/V Akademik M.A. Lavrentiev, a new structural scheme of transverse faults in the forearc of the Central Kuril Islands was compiled, the fault kinematics was studied, and a model of the extension zone in the structural pattern of the study area was proposed. According to this model, the trench rollback and development of back-arc basins resulted from the continuous supply of material into the upper mantle convection cell owing to subduction and an increase in the dynamic pressure that pushes the subducting plate, causing it to migrate toward the ocean.

Sobre autores

B. Baranov

Shirshov Institute of Oceanology

Autor responsável pela correspondência
Email: bbaranov@ocean.ru
Rússia, Nakhimovskii pr. 36, Moscow, 117218

L. Lobkovsky

Shirshov Institute of Oceanology

Email: bbaranov@ocean.ru
Rússia, Nakhimovskii pr. 36, Moscow, 117218

K. Dozorova

Shirshov Institute of Oceanology

Email: bbaranov@ocean.ru
Rússia, Nakhimovskii pr. 36, Moscow, 117218

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