TY  - JOUR
A1  - Baes, Marzieh
A1  - Sobolev, Stephan Vladimir
T1  - Mantle Flow as a Trigger for Subduction Initiation: A Missing Element of the Wilson Cycle Concept
JF  - Geochemistry, geophysics, geosystems
N2  - The classical Wilson Cycle concept, describing repeated opening and closing of ocean basins, hypothesizes spontaneous conversion of passive continental margins into subduction zones. This process, however, is impeded by the high strength of passive margins, and it has never occurred in Cenozoic times. Here using thermomechanical models, we show that additional forcing, provided by mantle flow, which is induced by neighboring subduction zones and midmantle slab remnants, can convert a passive margin into a subduction zone. Models suggest that this is a long-term process, thus explaining the lack of Cenozoic examples. We speculate that new subduction zones may form in the next few tens of millions of years along the Argentine passive margin and the U.S. East Coast. Mantle suction force can similarly trigger subduction initiation along large oceanic fracture zones. We propose that new subduction zones will preferentially originate where subduction zones were active in the past, thus explaining the remarkable colocation of subduction zones during at least the last 400 Myr.
Y1  - 2017
U6  - https://doi.org/10.1002/2017GC006962
SN  - 1525-2027
VL  - 18
SP  - 4469
EP  - 4486
PB  - American Geophysical Union
CY  - Washington
ER  - 
TY  - JOUR
A1  - Sobolev, Stephan Vladimir
A1  - Muldashev, Iskander A.
T1  - Modeling Seismic Cycles of Great Megathrust Earthquakes Across the Scales With Focus at Postseismic Phase
JF  - Geochemistry, geophysics, geosystems
Y1  - 2017
U6  - https://doi.org/10.1002/2017GC007230
SN  - 1525-2027
VL  - 18
SP  - 4387
EP  - 4408
PB  - American Geophysical Union
CY  - Washington
ER  -