Part 6. Present plate boundary seismic, volcanic and kinematic processes: The origin of magmas at convergent plate boundaries

Reconciling plate kinematic and seismic estimates of lithospheric convergence

1 Bull, J.M., De Mets, C., Krishna, K.S. and Sanderson, D.J. (2010). Reconciling 2 plate kinematic and seismic estimates of lithospheric convergence in the central 3 Indian Ocean. Geology, 38, (4), 307-310. (doi:10.1130/G30521.1). 4 See also Data Repository item 2010083 5 6 7 Reconciling plate kinematic and seismic estimates of lithospheric convergence 8 in the central Indian Ocean 9 J.M. Bull,...

An integrated global model of present-day plate motions and plate boundary deformation

S U M M A R Y In this paper we present a global model (GSRM-1) of both horizontal velocities on the Earth’s surface and horizontal strain rates for almost all deforming plate boundary zones. A model strain rate field is obtained jointly with a global velocity field in the process of solving for a global velocity gradient tensor field. In our model we perform a least-squares fit between model ve...

Slip parameters on major thrusts at a convergent plate boundary: regional heterogeneity of potential slip distance at the shallow portion of the subducting plate

Understanding variations of slip distance along major thrust systems at convergent margins is an important issue for evaluation of near-trench slip and the potential generation of large tsunamis. We derived quantitative estimates of slip along ancient subduction fault systems by using the maturity of carbonaceous material (CM) of discrete slip zones as a proxy for temperature. We first obtained...

The Diffuse Plate boundary of Nubia and

An updated digital model of plate boundaries

[1] A global set of present plate boundaries on the Earth is presented in digital form. Most come from sources in the literature. A few boundaries are newly interpreted from topography, volcanism, and/or seismicity, taking into account relative plate velocities from magnetic anomalies, moment tensor solutions, and/or geodesy. In addition to the 14 large plates whose motion was described by the ...