UMass Geomechanics

Michele Cooke

230 Morrill Science Center
Department of Geosciences
University of Massachusetts
611 North Pleasant Street
Amherst, MA 01003-9297

email: cooke<at> <-- preferred
voice: 413-577-3142
video phone (ip): 128:119:45:50
video phone (direct dial up): 413-461-3286
video phone (interpreter relay) 413-461-3286
FAX: 413-545-1200

News from the Geomechanics research group

New paper in Geology

strain distribution

Justin shows that 40% of the strain within the Eastern California Shear Zone may be accomodated as permanent deformation between the faults rather than as slip along the faults. This could explain why geodetic studies that assume no off-fault deformation get faster fault slip rates than geologic investigations.

Herbert, Justin W., Michele L. Cooke, Michael Oskin and Ohilda Difo, 2014. How much can off-fault deformation contribute to the slip rate discrepancy within the Eastern California Shear Zone?, Geology. doi:10.1130/G34738.1

Experimental results now on you tube

shear strain

Alex Hatem has posted movies and animations from her restraining bend experiments onto the Geomechanics Physical Modeling Lab you tube channel.

We hope to develop these into useful teaching tools. If you have suggestions please let us know.

Michele was on sabbatical in far north Queensland, Australia July 2013- January 2014.

The geomechanics group will have several presentations at the upcoming Southern California Earthquake Center meeting

Ayla Heinze Fry and Karl Grette present their undergraduate theses

ayla with poster

    karl iwth poster

(photos by J Brigham-Grette)

New paper in Journal of Structural Geology

laser scan of restraining bend We document fault propagation around restraining bendswithin wet kaolin and demonstrate that the fault evolve to increase efficiency.
    Cooke, M. L., M. T. Schottenfeld and S. W. Buchanan (2013), Evolution of Fault Efficiency at Restraining Bends within Wet Kaolin, Journal of Structural Geology, doi:10.1016/j.jsg.2013.01.010.