Professor of Geology


  • B.A., Carleton College, 1984
  • M.Sc., University of Arizona 1987
  • Ph.D., University of California-Santa Barbara, 1995

Curriculum vitae

Research metrics:   Scopus  //   Research Gate     //   Google Scholar  //  Academia

Media items:   Nature Careers  //   Science news   //  Ars Technica   //  Wikipedia

Current Projects and Federal Grants

Ice sheet erosional Interaction with Hot geotherm (ICI-Hot) in West Antarctica

Testing the linchpin for WAIS collapse using diatoms and IRD in Pleistocene and Late Pliocene strata of the Resolution Drift, Amundsen Sea, Antarctica

IODP 379, 2019-2021 Amundsen Sea – West Antarctic Ice Sheet History

Collaborative Research: A systems approach to understanding the Ross Ocean and ice Shelf Environment, and Tectonic setting Through Aerogeophysical surveys and modeling (ROSETTA-ICE)

Emplacement mechanism, paleoenvironment of formation, and lithification/fluid migration history of Neoproterozoic siliciclastics and injectites , Colorado Front Range

Recent Publications

Tankersley, M., Horgan, H., Siddoway, C., Caratori Tontini, F., and Tinto K., 2022, Basement topography and sediment thickness beneath Antarctica’s Ross Ice Shelf, Geophysical Research Letters, doi: 10.1029/2021GL097371 .

Tikoff, B., Siddoway, C., Sokoutis, D., and Willingshofer, E., 2022, The lithospheric folding model applied to the Bighorn uplift during the Laramide orogeny, in Craddock, J.P. et al., eds., Tectonic Evolution of the Sevier-Laramide Hinterland: Geol. Soc. America Special Paper 555.

Siddoway, C., 2020, Antarctica, in Scott Elias, S. and Alderton, D. (eds.), Encyclopedia of Geology, 2nd edition; 17 pages. Amsterdam: Academic Press,

Flowers, R. M., Macdonald, FA., Siddoway, C.S., and Havranek, R., 2020, Diachronous development of the Great Unconformity prior to Snowball Earth, Proceedings of the National Academy of Sciences,

Jordan, T.A., Riley, T.R. and Siddoway, C., 2020, Geology of West Antarctica, Nature Reviews Earth and Environment, doi:10.1038/s43017-019-0013-6.

Courses taught currently

GY140   Introduction to the Earth System
CC107   First-Year Seminar: Writing the Record of Earth
GY212   Investigating Earth as a Physical System
GY250   Topics in Geology (subjects vary year to year) 
GY315   Structural Geology
GY316   Field analysis of Geological Structures
GY445   Regional Studies in Geology [field course]

More on Teaching and Research Mentoring

Research Interests:   Structural and metamorphic geology; tectonic development of West Antarctica and New Zealand within Gondwana; Rocky Mountains tectonics; the role of melt in deformation of migmatites; sandstone injectites.

Geological evolution of Antarctica

Cryogenian Sedimentary Rocks of Colorado

Siddoway family:     Colorado College has another professor by the name of Siddoway, and you guessed it, the two of us are married. Mike teaches Mathematics. If you are seeking the Prof. Siddoway whose research is in divisibility theory of arithmetical rings, or who presently is teaching History of Mathematics at Montana State University, you can reach Mike’s professional web page here.  To reach Mike, email him at

Christine with field assistant, Pearl