Research Areas: South America


Argentina


Mates by the campfire. photo by Alina Walcek

Research in west central Argentina has been a mainstay of the ES&T group since it inception in 2009. The Mendoza and San Juan Provinces of Argentina offer rich natural laboratories for tectonics, surfaces processes and the calibration of stable isotope proxy materials for deeper time applications. Prof. Hoke's long-term collaborators in Argentina, Laura Giambiagi (structural geology), Jose Mescua (structural geology)and Julieta Aranibar (biogeochemistry), all hail from IANIGLA. There are several projects currently underway in both provinces and a rare incursion northward to Tucuman Province:


  • Detrital zircon double dating of modern rivers between 32 and 35°S, Mendoza and San Juan (funding: American Chemical Society, Petroleum Research Fund)
  • TCN-derived paleoerosion rates from paired wedge-top and foreland basin sequences, Iglesia and Bermejo Basins, San Juan (funding: American Chemical Society, Petroleum Research Fund)
  • Calibration of the clumped isotope geothermometer in the Argentine Piedmont, Mendoza (collaborators, K.W. Huntington, J. Aranibar; funding: NSF)
  • Glacial-intergalcial temperature variations from a Quaternary loess sequence in Tucuman (collaborator, K.W. Huntington; funding: NSF)   



Prior research in Argentina was sponsored by NSF award OISE-0601957 and incude the following publications:

    • Hoke, G.D., Giambiagi, L.B., Garzione, C.N., Mahoney, J.B., Strecker, M.R., 2014, Neogene Paleoelevation of intermontane basins in a narrow, compressional mountain range, Earth and Planetary Science Letters, v. 406C, p. 153-164.  doi:10.1016/j.epsl.2014.08.032
    • Giambiagi, L., Tassara, A., Mescua, J., Tunik, M., Alvarez, P., Godoy, E., Hoke, G., Pinto, L., Spagnotto, S., Porras, H., Tapia, F., Jara, P., Bechis, F., García, V.H., Suriano, J., Pagano, S.D., 2014, Evolution of shallow and deep structures along the Maipo-Tunuyán Transect (33°40´S): from the Pacific coast to the Andean foreland, in Sepulveda et al. Eds, Geodynamic Processes in the Andes of Central Chile and Argentina, Geological Society of London Special Publications, doi:10.1144/SP399.14
    • Hoke, G.D., *Graber, N.R., Mescua, J.F., Giambiagi, L.B., Fitzgerald, P.G., Metcalf, J.R., 2014, Near Pure Surface Uplift of the Argentine Frontal Cordillera: insights from (U-Th/He) thermochronology and geomorphic analysis, in Sepulveda et al. Eds, Geodynamic Processes in the Andes of Central Chile and Argentina, Geological Society of London Special Publications. doi:10.1144/SP399.4
    • 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., Hoke, G.D., 2013, Hot or not? Temperature bias in pedogenic carbonate formation revealed by clumped isotope thermometry: Earth and Planetary Science Letters, v.361, p. 208-218, doi:10.1016/j.epsl.2012.10.024
    • Giambiagi, L., Mescua, J., Bechis, F., Tassara, A., Hoke, G., 2012, Thrust belts of yhe southern central Andes: along-strike variations in shortening, topography, crustal geometry, and denudation: Geological Society of America Bulletin, Published online 3 May 2012; doi:10.1130/B30609.1
    • *Walcek, A.A., and Hoke, G.D., 2012, Surface uplift and erosion of the Southernmost Argentine Precordillera: Geomorphology. doi: 10.1016/j.geomorph.2012.02.021
    • Ruskin, B.G, Dávila, F.M., Hoke, G.D., Jordan, T.E., Astini, R.A. and Alonso, R, 2011 Stable isotope composition of middle Miocene carbonates of the Frontal Cordillera and Sierras Pampeanas: Did the Paranaense seaway flood western and central Argentina?: Palaeogeography, Palaeoclimatology, Palaeoecology, vol. 308 pp. 293-303, doi:10.1016/j.palaeo.2011.05.033
    • Hoke, G.D., Garzione, C.N., Araneo, D.C., Latorre, C., Strecker, M.R., and *Williams, K.J., 2009, The stable isotope altimeter: Do Quaternary pedogenic carbonates predict modern elevations?: Geology, 37(11), p. 1015-1018,doi: 10.1130/G30308A.1




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