Robert J. Twiss is an American geologist emeritus of University of California, Davis. He made his Ph.D. 1971 at Princeton University.[1]
First in his career he researched viscosity of earth mantle.[2] Nowadays he interests for the mechanisms and mechanics of rock deformation and the interpretation of connected structures.[3][4]
Together with geologist Eldridge M. Moores he has co-authored two famous[citation needed] textbooks: Tectonics and Structural Geology.
- ^ Twiss’ webpage at UC Davis (from Internet Archive)
- ^ Robert J. Twiss (November 1976). "Structural superplastic creep and linear viscosity in the earth's mantle". Earth and Planetary Science Letters. 33 (1): 86–100. Bibcode:1976E&PSL..33...86T. doi:10.1016/0012-821x(76)90160-6.
- ^ Robert J. Twiss, Michael J. Gefell (January 1990). "Curved slickenfibers: a new brittle shear sense indicator with application to a sheared serpentinite". Journal of Structural Geology. 12 (4): 471–481. Bibcode:1990JSG....12..471T. doi:10.1016/0191-8141(90)90035-w.
- ^ Robert J. Twiss, Randall Marrett (2010). "Determining brittle extension and shear strain using fault-length and displacement systematics: Part I: Theory" doi:10.1016/j.jsg.2010.04.007