Dr. Greg A. Valentine

Office: 421 Hochstetter Hall Phone: 716.645.4295 Email: gav4@buffalo.edu Website: Home Page Title: Professor, Department of Geology; Director, Center for GeoHazards Studies Degree: Ph.D., Geological Sciences, University of California Santa Barbara, 1988 Specialty: Volcanic risk, basaltic volcanic fields, pyroclastic deposits, volcano fluid dynamics, volcaniclastic and surface processes.

Courses Offered

GLY 215 Sedimentology

GLY 407 Geologic Field Training (Field Camp)

GLY 428/528 Geologic Hazards and Risk

GLY 431/531 Volcanology

Research Interests

Consequences of volcanic activity and spatial-temporal behavior of volcanic systems, with application to risk assessment and coupling to infrastructure response models. Physical processes associated with basaltic volcanism, from the scale of eruptive styles at individual volcanoes to the dynamics of basaltic fields. Interpretation of pyroclastic deposits including large-volume, widespread ignimbrites and associated caldera. Multiphase fluid dynamics and numerical modeling of explosive eruptions. Evolution of volcanic landforms, particularly in arid environments.

Recent Publications

Valentine GA, Doronzo DM, Dellino P, de Tullio MD (2011) Effects of volcano profile on dilute pyroclastic density currents: numerical simulations. Geology 39: 947-950, doi: 10.1130/G31936.1

Valentine GA, Shufelt NL, Hintz ARL (2011) Models of maar volcanoes, Lunar Crater (Nevada, USA). Bulletin of Volcanology 73: 753-765, doi:10.1007/s00445-011-0451-6

Valentine GA, Bonadonna C, Manzella I, Clarke A, Dellino P (2011) Large-scale experiments on volcanic processes. Eos, Transactions, American Geophysical Union 92:89-96.

Doronzo DM, Valentine GA, Dellino P, de Tullio MD (2010) Numerical analysis of the effect of topography on deposition from dilute pyroclastic density currents. Earth and Planetary Science Letters 300: 164-173, doi:10.1016/epsl.2010.10.003 

Genareau K, Valentine GA, Moore G, Hervig RL (2010) Mechanisms for transitions in eruptive style at a monogenetic scoria cone revealed by microtextural analyses (Lathrop Wells volcano, Nevada, USA). Bulletin of Volcanology 72: 593-607, doi 10.1007/s00445-010-0234-z

Valentine GA, Hirano N (2010) Mechanisms of low-flux intraplate volcanic fields - Basin and Range (North America) and Northwest Pacific Ocean. Geology 38: 55-58, doi:10.1130/G30427.1

Valentine GA, Perry FV (2009) Volcanic risk assessment at Yucca Mountain, NV, USA: integration of geophysics, geology, and modeling. In: Volcanism, Tectonism, and Siting Nuclear Facilities (Connor C, Connor L, Chapman N, eds), Cambridge University Press, p. 452-480.

Dartevelle S, Valentine GA (2008) Multiphase magmatic flows at Yucca Mountain, Nevada. Journal of Geophysical Research 113, B12209, doi:10.1029/2007JB005367

Valentine GA, Gregg TKP (2008) Continental basaltic volcanoes - processes and problems. Journal of Volcanology and Geothermal Research 177, 857-873, doi:10.1016/j.jvolgeores.2008.01.050

Keating GN, Pelletier J, Valentine GA, Statham B (2008) Evaluating suitability of a tephra dispersal model as part of a risk assessment framework. Journal of Volcanology and Geothermal Research 177: 397-404, doi: 10.1016/j.jvolgeores.2008.06.007

Keating GN, Valentine GA, Krier DJ, Perry FV (2008) Shallow plumbing systems for small-volume basaltic volcanoes. Bulletin of Volcanology 70: 563-582, doi:10.1007/s00445-007-0154-1