Dr. Eric Roberts from Jame's Cook University Presentation
- Wednesday, February 8, 2017 from 4:30pm to 5:30pm
- Reid Hall, Room 105 - view map
On February 8th, 2017 at 4:30PM in REID 105, Dr. Eric Roberts from James Cook University will give a prensentation titled, “Advances In Geochronology, Provenance And Stratigraphy Of Upper Cretaceous Strata And Volcanics Across Alberta, Montana And Utah With Implications For Vertebrate Paleontology.”
Below is a brief synopsis of his presentation from Dr. Roberts:
"Over the last 25 years, intense study of correlative Upper Cretaceous strata across the Western Interior Basin, including the Two Medicine and Judith River Formations in Montana, the Dinosaur Park Formation in Alberta, and the Kaiparowits Formation in Utah, has greatly improved our knowledge of the vertebrate faunas, depositional environments and ages of each of these units. However, the ability to test evolutionary and ecological hypotheses about these faunas, or sequence stratigraphic models that relate alluvial architecture of these deposits to sea level or paleoclimate curves and regional tectonics is still limited by the precision of our existing radioistopic dating and challenges associated with regional correlation of alluvial strata.
In this talk, I will discuss the results and implications of ongoing research aimed at improving our understanding of regional stratigraphy, vertebrate evolution, and tectonics of these Upper Cretaceous strata in western North America. I will focus on three elements of my research: (1) redating volcanic ash beds from each of these units via high precision U-Pb CA-TIMS geochronology; (2) application of detrital zircon geochronology for sedimentary provenance and to test for eustatic vs. tectonic drivers of sequence architecture in Montana and Utah; and (3) development of a novel approach to provenance analysis using melt inclusions in zircons, and its applications to source identification and correlation of volcanic ashes from Montana, Alberta and Utah."
We look forward to you joining us for this presentation.
- Department of Earth Sciences