Polarized Plate Tectonics

Reconstruction of northeast Asian deformation integrated with western Pacific plate subduction since 200 Ma

“…The complex interactions of plate boundary forces result in plate motions dominated by interactions among far-field plate velocities, hinge migration direction, subduction polarity Doglioni and Panza, 2015), slab pull and ridge push forces (Forsyth and Uyeda, 1975;Stadler et al, 2010), the dynamics driven by mantle drag (Conrad and Lithgow-Bertelloni, 2006), and radial (Phillips and Bunge, 2005) and lateral viscosity contrasts (Stadler et al, 2010). The kinematics of subduction zones suggest a close relationship between the velocities of subduction hinge migration, lower plate motion, and subduction relative to the anchored upper plate.…”

“…The kinematics of subduction zones suggest a close relationship between the velocities of subduction hinge migration, lower plate motion, and subduction relative to the anchored upper plate. The far-field velocities of the upper and lower plates and the trench migration (or the transient subduction hinge) control plate subduction Doglioni and Panza, 2015). Global or regional plate motion changes are likely related to tectonic events through changes in plate boundary forces which may further drive intracontinental deformation, back-arc spreading or shortening.…”

Conductive cooling of spherical bodies with emphasis on the Earth

“…Palme and O'Neill, ) and power sources in the core, and by debates regarding cooling mechanisms: whether plumes stretch from core to surface, whether subducted slabs penetrate into the lower mantle and whether primordial heat contributes to the surface flux (e.g. Hamilton, ; Foulger, ; Anderson, ; Foulger et al ., ; Doglioni and Panza, ). These issues underscore the need for constraints on the outcomes of end‐member initial conditions.…”

Torque exerted on the side of crustal blocks controls the kinematics of Ethiopian Rift

“…This has been inferred by several geodynamic and seismic anisotropy studies (e.g., Bird et al, 2008). However, recent modeling studies indicate the heterogeneity of mantle in density and viscosity both vertically and horizontally Doglioni and Panza, 2015;Doglioni and Anderson, 2015). Meanwhile, the presence of LVZ at the lithosphereeasthenosphere interface hints at possible decoupling and reduction of the drag at the base of the lithosphere and hence allows differential rotation between the lithosphere and the underlying mantle (e.g., Cuffaro and Doglioni, 2007).…”