Two papers in latest issue of Geosphere
We’ve had two papers published in the latest issue of Geosphere:
First, the study by Fattaruso, Cooke, and our Becky Dorsey uses 3D boundary-element models to simulate crustal deformation for different interpretations of the geometry of the southern San Andreas fault and smaller secondary faults in southern California. When compared to observed vertical motions in the Coachella Valley, Santa Rosa Mountains, and Mecca Hills, the model results suggest that this section of the fault dips steeply northeast, in contrast to existing models that assume the fault is vertical.
Fattaruso, L.A., Cooke, M.L., and Dorsey, R.J., 2014, Sensitivity of uplift patterns to dip of the San Andreas fault in the Coachella Valley, California: Geosphere, v. 10, no. 6, p. 1235–1246, URL: http://geosphere.geoscienceworld.org/content/10/6/1235.abstract.
Additionally, this study by Mackey (PhD UO 2009), and our own Sammy Castonguay, Paul Wallace, and Ray Weldon, dates the timing of normal faulting and emplacement of a lava field on the margins of ancient Fort Rock Lake. They find evidence for a period of synchronous normal faulting and dike-fed cinder cone activity about 14,000 years ago, with minimal movement since.
Mackey, B.H., Castonguay, S.R., Wallace, P.J., and Weldon, R.J., 2014, Synchronous late Pleistocene extensional faulting and basaltic volcanism at Four Craters Lava Field, central Oregon, USA: Geosphere, v. 10, no. 6, p. 1247–1254, URL: http://geosphere.geoscienceworld.org/content/10/6/1247.abstract.