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Department News | Department of Geological Sciences

Spring 2015 Weekly Seminar Schedule

Talks on Wednesdays are from 4:00 to 5:20 pm in 110 Willamette Hall. Tea and cookies are served in Cascade 200 beginning at 3:30 p.m. April 1 – Kerin Claeson (Philadelphia COM) Title: TBA April 8 – Regan Dunn and Rick Madden (University of Washington and University of ...

Quaternary Research paper on age of Willamette Valley Megafauna

Edward Davis is a contributing author on a paper in the latest issue of Quaternary research, headed by Danny Gilmour of Portland State University. This study used high-precision AMS radiocarbon dating to determine the ages of the latest megafauna found in the Willamette Valley, here in western ...

Geosphere paper on Pliocene rapid sediment aggradation in the Colorado River

Becky Dorsey is third author on a paper in the February 2015 issue of Geosphere. Howard et al. investigate the early Pliocene river-laid Bullhead Alluvium, exposed along the lower Colorado River downstream of Grand Canyon. They find that it records a massive pulse of sediment aggradation shortly ...

Publications for 2015

Gilmour, D.M., Butler, V.L., O’Connor, J.E., Davis, E.B., Culleton, B.J., Kennett, D.J., and Hodgins, G., 2015, Chronology and ecology of late Pleistocene megafauna in the northern Willamette Valley, Oregon: Quaternary Research, v. 83, no. 1, p. 127–136, URL: ...

Two papers in latest issue of Geosphere

We’ve had two papers published in the latest issue of Geosphere: First, the study by Fattaruso, Cooke, and our Becky Dorsey uses 3D boundary-element models to simulate crustal deformation for different interpretations of the geometry of the southern San Andreas fault and smaller secondary ...

Frontiers in Earth Science paper linking Crooked River volcanics to the Yellowstone Hotspot

A new paper by Angie Seligman and Ilya Bindeman and colleagues analyzes the geochemistry of Eocene and Oligocene (40 to 28 million year old) volcanic rocks of the Clarno and John Day Formations. They found that these rocks “were produced by the first appearance of the Yellowstone plume east ...

Ecography paper on southern overprediction of paleo species distribution models.

In this month’s issue of Ecography, Edward Davis published a study that found a consistent mis-match between Ecological Niche Models of mammal species distributions during the Last Glacial Maximum (~20,000 years ago). This work suggests that niche models that are used to predict range shifts ...

Nature paper on subduction-driven removal of continental lithosphere

Our own Gene Humphreys just published a paper in today’s issue of Nature (11/13/2014). The study is about how subduction can remove the mantle lithosphere along a continental margin, leaving it vulnerable to later tectonics and volcanism. The authors describe a type of interaction where ...

Publications for 2014

Antibus, J.V., Panter, K.S., Wilch, T.I., Dunbar, N., McIntosh, W., Tripati, A., Bindeman, I., and Blusztajn, J., 2014, Alteration of volcaniclastic deposits at Minna Bluff: Geochemical insights on mineralizing environment and climate during the Late Miocene in Antarctica: Geochemistry, Geophysics, ...

Winter 2015 Weekly Seminar Series

Talks on Wednesdays are from 4:00 to 5:20 pm in 110 Willamette Hall. Tea and cookies are served in Cascade 200 beginning at 3:30 p.m. Jan. 7 – Michael Manga (UC Berkeley) Title: Earthquakes and water (and why the Lusi eruption was not caused by an earthquake) Jan. 14 – Jean ...
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