Biography
Prof. Marshak maintains a strong interest in geoscience education. He has authored or co-authored college textbooks in introductory geology, Earth Science, and structural geology, most of which are published by W.W. Norton & Company. He also has developed a MOOC (massive open online course) offered through Coursera.
Textbooks: http://books.wwnorton.com/books/Author.aspx?id=11563
Research Interests
Prof. Marshak's research involves structural geology, tectonics, and field geology. He has been involved in research projects in the Midcontinent, the Appalachians, and southeastern Brazil, and studies a variety of issues including: the development of tectonic structures and unconformities in cratons; the development of tectonic foliations in rocks; the formation of fold-thrust belts; and crustal evolution during the Precambrian.
Education
- Ph.D. Columbia University
- M.S. University of Arizona
- A.B. Cornell University
Courses Taught
- GEOL 100: Planet Earth
- GEOL 411: Structural Geology and Tectonics
- GEOL 415/GEOL 515: Field Geology
- GEOL 512: Geotectonics
- ESE 199: Future of Earth's Resources
- GEOL 511: Advanced Structural Geology
Recent Publications
DeLucia, M. S., Murphy, B. S., Marshak, S., & Egbert, G. D. (2019). The Missouri High-Conductivity Belt, revealed by magnetotelluric imaging: Evidence of a trans-lithospheric shear zone beneath the Ozark Plateau, Midcontinent USA? Tectonophysics, 753, 111-123. https://doi.org/10.1016/j.tecto.2019.01.011
Marshak, S., Haq, S. S. B., & Sen, P. (2019). Ramp initiation in fold-thrust belts: Insight from PIV analysis of sandbox models. Journal of Structural Geology, 118, 308-323. https://doi.org/10.1016/j.jsg.2018.11.006
Barklage, M., Stein, S., Stein, C. A., Keller, G. R., Marshak, S., Hickman, J. B., ... Elling, R. P. (2018). BARSCOPE - EXTENDING EARTHSCOPE BETWEEN THE APPALACHIANS AND THE ROCKIES. Paper presented at Geological Society of America Annual Meeting, Indianapolis, United States. https://doi.org/10.1130/abs/2018AM-320443
Chen, C., Gilbert, H., Fischer, K. M., Andronicos, C. L., Pavlis, G. L., Hamburger, M. W., ... Yang, X. (2018). Lithospheric discontinuities beneath the U.S. Midcontinent – signatures of Proterozoic terrane accretion and failed rifting. Earth and Planetary Science Letters, 481, 223-235. https://doi.org/10.1016/j.epsl.2017.10.033
DeLucia, M. S., Guenthner, W. R., Marshak, S., Thomson, S. N., & Ault, A. K. (2018). Thermochronology links denudation of the Great Unconformity surface to the supercontinent cycle and snowball Earth. Geology, 46(2), 167-170. https://doi.org/10.1130/G39525.1