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Gerilyn S. Soreghan

Mewbourne College of Earth and Energy, ConocoPhillips School of Geology and Geophysics, The University of Oklahoma website wordmark
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Gerilyn S. "Lynn" Soreghan

Director and Eberly Professor, School of Geology and Geophysics

Gerilyn S. "Lynn" Soreghan

David L. Boren Professor

Ph.D., 1992 University of Arizona
B.S., 1986, University of California, Los Angeles

Office: SEC 868
Phone: 405-325-4482
Fax: 405-325-3140

Areas of Interest

Sedimentology, Stratigraphy, and Paleoclimate


Earth's "deep-time" sedimentary record houses climate states dramatically different from our modern or recent world. My research is primarily field-based, but I collaborate with colleagues at OU and elsewhere in using geochemistry, geochronology, magnetism, and climate modeling as applied to the sedimentary record to refine our understanding of climate and linked processes. The late Paleozoic world (~300 My ago) captures my interest because it archives Earth's last great "icehouse" and collapse of that icehouse, glacial-interglacial climate swings like those of the recent, global mountain building that culminated in the Pangaean supercontinent, and perhaps the dustiest atmosphere in the planet's history. Working with students and colleagues, my current research includes (1) investigating hypotheses of tropical glaciation and orogenic (mountain) collapse in the enigmatic Ancestral Rocky Mountains, (2) gauging dustiness of the late Paleozoic atmosphere and possible effects on the biosphere and carbon cycling, (3) high-frequency, glacial-interglacial climate change, and (4) assessing physical and chemical weathering trends in various climate systems. For more details, please visit my personal webpage.

Courses Taught

Introductory Geology (Honors)

Earth, Sustainability, and the Economy (Honors)

Depositional Systems and Stratigraphy

Earth's Past Climate

Sedimentology / Stratigraphy Seminar

Paleozoic Carbonates and Sequence Stratigraphy

Selected Publications

Joo, Y.J., Elwood Madden, M.E., & Soreghan, G.S., 2018, Anomalously low chemical weathering in fluvial sediment of a tropical watershed (Puerto Rico). Geology, 1–4.

Carvajal, C.P., Soreghan, G.S., Isaacson, P.E., Ma, C., Hamilton, M.A., Hinnov, L.A., & Dulin, S.A., 2018, Atmospheric dust from the Pennsylvanian Copacabana Formation (Bolivia): A high-resolution record of paleoclimate and volcanism from northwestern Gondwana. Gondwana Research, 58, 105–121.

Smith, C., Soreghan, G.S., & Ohta, T., 2018, Scanning electron microscope (SEM) microtextural analysis as a paleoclimate tool for fluvial deposits: A modern test. Geological Society of America Bulletin, 1–17.

Pfeifer, L.S., Soreghan, G.S., Pochat, S., Van Den Driessche, J., & Thomson, S.N., 2016, Permian exhumation of the Montagne Noire core complex recorded in the Graissessac-Lodeve Basin, France. Basin Research, 1–14.

Sur, S., Owens, J. D., Soreghan, G. S., Lyons, T. W., Raiswell, R., Heavens, N. G., & Mahowald, N. M., 2015, Extreme eolian delivery of reactive iron to late Paleozoic icehouse seas. Geology, G37226.1–5.

Soreghan, G.S., Sweet, D.E., & Heavens, N.G., 2014, Upland Glaciation in Tropical Pangaea: Geologic Evidence and Implications for Late Paleozoic Climate Modeling. The Journal of Geology, 122(2), 137–163.

Soreghan, G.S., & Soreghan, M.J., 2013, Tracing Clastic Delivery To the Permian Delaware Basin, U.S.A.: Implications For Paleogeography and Circulation In Westernmost Equatorial Pangea. Journal of Sedimentary Research, 83(9), 786–802.

Soreghan, G.S., Soreghan, M.J., Poulsen, C., Young, R.A.., Eble, C., Sweet, D.E., & Davogustto, O., 2008, Anomalous Cold in the Pangaean Tropics. Geology, 36, 659–662.

Soreghan, M.J., Soreghan, G.S., & Hamilton, M.A., 2002, Paleowinds inferred from detrital-zircon geochronology of upper Paleozoic loessite, western equatorial Pangea. Geology, 30(8), 695–698.

Soreghan, G.S., Soreghan, M.J., & Hamilton, M., 2008, Origin and significance of loess in late Paleozoic western Pangaea: A record of tropical cold? Palaeogeography, Palaeoclimatology, Palaeoecology, 26.