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Gregory Hoke

Assistant Professor of Earth Sciences

Research Interests

Tectonic geomorphology
Interactions between landscapes, cimate and tectonics
Isotopic records of terrestrial surface conditions


Current Research Projects

Project SWIFT (with L.K. Lautz, Z. Liu, D.I. Siegel)

Interpreting clumped isotope temperatures and d18O records from pedogenic carbonate (NSF EAR-1251966, with K. Huntington (U. Washington), J. Aranibar (IANIGLA, Argentina) and C. Latorre (P. Universidad Católica, Chile)

Evaluating the mechanisms for episodic basin filling and and erosion in wedge-top and proximal foreland environments (ACS-PRF, in collaboration with M. R. Strecker (U. Potsdam) and George Hilley (Stanford) ).

Basin evolution and elevation history of the SE Tibetan Plateau margin (NSF EAR-1019427 with C.N. Garzione (U. Rochester) and M.T. Hren (UConn)).

Past Projects:
Rock deformation events, range elevation change and sedimentary basin filling in the Andes Mountains between 30°S and 34°S latitude (NSF OISE-0601957 with C. N. Garzione, U. Rochester; L. B. Giambiagi, IANIGLA, Argentina).


Courses

  • Earth System Science (EAR 203)
  • Geomorphology (EAR 403/603)
  • Applications of GIS in the Earth Sciences (EAR 410/610)
  • Advanced Geomorphology (EAR 443/643)


Postdoctoral Research Associate

Devin McPhillips


Students

Mallory Ringham
Pedro Val
Gregory Wissink


Facilities

Mineral Separation and quartz purification:
Frantz magnetic separator
24 gal,  1500 W ultrasonic tank with cooling loop
Heated hotdog rollers
LST and MEI mineral separation equipment
Carbonator for froth flotation of minerals

Optical instruments:
Leica S8 120x binocular microscope with 1.3 MP camera attached to a Macintosh computer
Leitz student-grade petrographic microscope

Computing:
3 dual quad-core workstations for GIS and image processing applications
Network enabled data storage unit
Matlab, ENVI, ArcGIS, ArcGIS server, FileMaker Pro

Field equipment:
Trimble Recon X ruggedized field computers with bluetooth GPS and ArcPad software
2 Brunton Geotransits
2 Jacob's staffs
1 sub-meter Trimble GPS
2 Laser Range finders


Selected Publications


Hoke, G.D., Aranibar, J.N.,Viale,M., Araneo, D.C., Llano, C., 2013, Seasonal moisture sources and the isotopic composition of precipitation, rivers and carbonates across the Andes at 32.5 - 35.5°S: Geochemistry, Geophysics, Geosystems, v. 14, p. 962-978, doi: 10.1002/ggge.20045

Peters, N. A., Huntington K.W., and Hoke, G.D., 2013, Hot or not? Impact of seasonally variable soil carbonate formation on paleotemperature and O-isotope records from clumped isotope thermometry: Earth and Planetary Science Letters, v. 361, 208–218, doi:10.1016/j.epsl.2012.10.024.

*Walcek, A.A. and Hoke, G.D., 2012, Surface Uplift and Erosion of the Southernmost Argentine Precordillera, Geomorphology, v. 153-154, p. 156-158, doi:10.1016/j.geomorph.2012.02.021

Hoke, G.D., Garzione, C.N., Araneo, D.C., Latorre, C., Strecker, M.R. and Williams, K.J.; 2009, Can Quaternary pedogenic carbonates be used to estimate modern elevations?: Geology v.37, p. 1015-1018, doi: 10.1130/G30308A.

Hoke, G. D., and Garzione, C. N., 2008, Paleosurfaces, paleoelevation, and the mechanisms for the latest Miocene topographic development of the Altiplano Plateau: Earth and Planetary Science Letters, v. 271, no. 1-4, p. 192-201. doi:10.1016/j.epsl.2008.04.008

Hoke, G. D., Isacks, B. L., Jordan T.E., Tomlinson, A.J., Blanco Pavez, N., and Razmezani, J., 2007, Geomorphic evidence for post-10 Ma uplift of the western flank of the central Andes 18°30'-22°S: Tectonics 26 doi:/10.1029/2006TC002082