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Van Tuyl Lecture: James Hagadorn, Denver Museum
October 25 @ 4:00 pm - 5:00 pm
James Hagadorn, Denver Museum
241 Berthoud Hall, 4PM
Topic: New Data from the Strata: Rocky Mountain Extinctions
Abstract: Hiding within our mountainous successions of redbeds and ridge-capping carbonates, are strata that record Colorado’s passage through two mass extinctions—the end-Devonian (Fammenian) and Permian-Triassic events. Although challenging to decipher in outcrop and in the subsurface, they are relevant tie-points between basins across the Rocky Mountain region and contain some unusual facies and faunas that reflect the interplay between continental and marine conditions at transitions between wet and dry climates. Collectively, they have potential to inform our understanding of how inland continental settings were impacted by two global-scale biotic-environmental events.