Keller, Randy

Associate Professor
Senior Research

Office:	113 Wilkinson Hall
Phone:	541.737.7648
Fax:	541.737.1200
Email:	kellerr@geo.oregonstate.edu

Specialty: Marine Geology, Igneous Geochemistry

Research Interests: Chemical geodynamics of mantle plumes and subduction zones; Hotspot - spreading ridge interaction; Volcanology of seamounts; Origin of diamonds

Education

BS Geology (with Honors)
University of Florida, 1985
MS Marine Geology
Oregon State University, 1989
PhD Marine Geology
Oregon State University, 1996

Courses

GEO 101 - The Solid Earth
GEO 103 - Exploring the Deep: Introduction to Oceanography (online via OSU Extended Campus)
GEO 305 - Living with Active Cascades Volcanoes (online via OSU Extended Campus)

Recent Publications

Chaytor, J.D., R.A. Keller, R.A. Duncan, and R.P. Dziak, 2007. Seamount morphology in the Bowie and Cobb hotspot trails, Gulf of Alaska. Geochem. Geophys. Geosys. 8(9), doi:10.1029/2007GC001712.

Keller, R.A., D.W. Graham, K.A. Farley, R.A. Duncan, and J.E. Lupton, 2004. Cretaceous to recent record of elevated helium isotopes along the Hawaiian-Emperor volcanic chain. Geochem. Geophys. Geosys. 5(12), doi:10.1029/2004GC000739.

Fretzdorff, S., T.J. Worthington, K.M. Haase, R. Hékinian, R.A. Keller, and P. Stoffers, 2004. Magmatism in the Bransfield Basin: Rifting of the South Shetland Arc? J. Geophys. Res., 109, B12208, doi:10.1029/2004JB003046.

Duncan, R.A., and R.A. Keller, 2004. Radiometric ages for basement rocks from the Emperor Seamounts, ODP Leg 197. Geochem. Geophys. Geosys. 5, doi:10.1029/2004GC000704.

Keller, R.A., M.R. Fisk, J.L. Smellie, J.A. Strelin, L.A. Lawver, and W.M. White, 2002. Geochemistry of back arc basin volcanism in Bransfield Strait, Antarctica: Subducted contributions and along-axis variations. J. Geophys. Res. 107(B8):4-1-4-17.

Klinkhammer, G.P., C.S. Chin, R.A. Keller, A. Dahlmann, H. Sahling, G. Sarthou, S. Petersen, F. Smith, and C. Wilson, 2001. Discovery of new hydrothermal vent sites in Bransfield Strait, Antarctica, Earth Planet. Sci. Lett. 193: 395-407.

Keller, R.A., M.R. Fisk, and W.M. White, 2000. Isotopic evidence for Late Cretaceous plume-ridge interaction at the Hawaiian hotspot. Nature, 405: 673-676.

Taylor, L.A., R.A. Keller, G.A. Snyder, W. Wang, W.D. Carlson, E.H. Hauri, T. McCandless, K.-R. Kim, N.V. Sobolev, and S.M. Bezborodov, 2000. Diamonds and their mineral inclusions, and what they tell us: A
detailed "pull-apart" of a diamondiferous eclogite. International Geology Review 42: 959-983.

Keller, R.A., L.A. Taylor, G.A. Snyder, V.N. Sobolev, W.D. Carlson, S.M. Bezborodov, and N.V. Sobolev, 1999. Detailed pull-apart of a diamondiferous eclogite xenolith: Implications for mantle processes during diamond genesis, Proceedings, 7th Intl. Kimb. Conf., Cape
Town, 1: 397-402.

Strelin, J.A. G. Re, R. Keller, and E. Malagnino, 1999. New evidence concerning the Plio-Pleistocene landscape evolution of southern Santa Cruz region, J. So. Am. Earth Sci., 12: 333-341.

Keller, R.A., R.A. Duncan, and M.R. Fisk, 1997. 16 m.y. of hotspot and nonhotspot volcanism on the Patton-Murray seamount platform, Gulf of Alaska, Geology, 25(6): 511-514.

Lawver, L.A., B.J. Sloan, D.H.N. Barker, M. Ghidella, R.P. von Herzen, R.A. Keller, G.P. Klinkhammer, and C.S. Chin, 1996. Distributed active extension in Bransfield Basin, Antarctic Peninsula: Evidence from multibeam bathymetry, GSA Today, 6(11):1-6.