Gilby Jepson

Tectonics, structural geology, thermochronology, geochronology, geochemistry

My research involves the application of isotope geochemistry and high-to-low temperature thermochronology to structural and tectonic questions in orogenic systems. My approach blends both laboratory and field-based approaches, with the current focus on the formation and collapse of the North American Cordillera and the accretion-deformation history of Central Asia (Tianshan-Altai and the Pamir-Tibet-Himalaya orogens). In addition to application, I am always looking for new ways to do and use geochemistry and thermochronology. Currently, I am developing fission-track thermochronometers in novel mineral systems (e.g., monazite fission-track) and integrating geochronology and geochemistry (e.g., apatite fission-track, U-Pb, and trace elements). Finally, tectonic events and deformation rarely occur in isolation. In collaboration with colleagues from paleoclimate and sedimentology backgrounds, I seek to interrogate how flux in the global paleoclimate influences the distribution of global orogens.

Jepson, G., B. Carrapa, George, S. W. M., Reeher, L. J., Kapp, P. A., Davis, G. H., Thomson, S. N., Amidori, C., Clinkscales, C., Jones, S., Gleadow, A. J. W., Kohn, B. P, (2022), Where did the Arizona-plano go? Middle to lower crustal processes required, Journal of Geophysical Research: Solid Earth, https://doi.org/10.1029/2021JB023850

Yang, F., Jepson, G. Liu, C., Qian, Z., Zhang, X., Zhang, Y., Glorie, S., (2021), Uplift-exhumation and preservation of the Yumugou Mo-W deposit, East Qinling, China: Insights from multiple apatite low-temperature thermochronology, Ore Geology Reviews , https://doi.org/10.1016/j.oregeorev.2021.104670

Jepson, G., B. Carrapa, J. Gillespie, R. Feng, P. G. DeCelles, P. A. Kapp, C. Tabor, J. Zhu, (2021), Climate as the great equalizer of continental-scale erosion, Geophysical Research Letters, https://doi.org/10.1029/2021GL095008

Jepson, G., Glorie, S., Khudoley, A. K., Malyshev, S. V., Gillespie, J., Glasmacher, U. A., Carrapa, B., Soloviev, A. V., and Collins, A. S., (2021), The Mesozoic exhumation history of the Karatau-Talas range, western Tian Shan, Kazakhstan-Kyrgyzstan, Tectonophysics, https://doi.org/10.1016/j.tecto.2021.228977

Gillespie, J., Glorie, S., Jepson, G., Zhimulev, F. I., Gurevich, D., Daniík, M., and Collins,  A. S., (2021), Inherited structure as a control on late Paleozoic and Mesozoic exhumation of the Tarbagatai Mountains, southeastern Kazakhstan, Journal of the Geological Society, https://doi.org/10.1144/jgs2020-121

Jepson, G., Carrapa, B., George, S. W. M., Triantafyllou, A., Egan, S. M., Constenius, K. N., Gehrels, G. E., and Ducea, M. N., (2021), Chemical Geology, Resolving mid- to upper-crustal exhumation through apatite thermochronology and petrochronology, 565, 120071, https://doi.org/10.1016/j.chemgeo.2021.120071

Gottardi, R., McAleer, R., Casale, G., Borel, M., Iriondo, A., Jepson, G., (2020), Exhumation of the Coyote Mountains metamorphic core complex (AZ): implications for orogeniccollapse of the southern North American Cordillera, Tectonics, 29(8), e2019TC006050, https://doi.org/10.1029/2019TC006050

Jepson, G., Glorie, S., Konopelko, D., Mirkamalov, R., Mamadjanov, Y., Gillespie, J., Daniík, M., and Collins, A., (2018), The low-temperature thermo-tectonic evolution of the western Tian Shan, Uzbekistan, Gondwana Research, 64, 122-136, https://doi.org/10.1016/j.gr.2018.08.003

Jepson, G., Glorie, S., Konopelko, D., Mirkamalov, R., Mamadjanov, Y., Gillespie, J., Daniík, M., and Collins, A., (2018), Low-temperature thermochronology of the Chatkal-Kurama terrane (Uzbekistan-Tajikistan): insights into the Meso-Cenozoic thermal history of the western Tian Shan, Tectonics, 37(10), 3954-3969, https://doi.org/10.1029/2017TC004878

Jepson, G., S. Glorie, D. Konopelko, J. Gillespie, M. Danisík, E. J. Noreen, Y. Mamadjanov, and A. Collins, (2018), Thermochronological insights into the structural contact between the Tian Shan and Pamirs, Tajikistan, Terra Nova, 30(2), 95-104, https://doi.org/10.1111/ter.12313