Eocene - Westward Subduction with Karin Sigloch

Explore the fascinating geology of the North Cascades in this comprehensive lecture focusing on the Eocene period and westward subduction. Delve into topics such as spreading ridges, slab walls, and the Wrangellia and Insular Superterrane. Learn about eastward and westward subduction processes, and gain insights from guest speaker Karin Sigloch, who shares her expertise on tomographic models of slabs and the subduction of the Farallon Plate. Discover the hypothesis of fixed trenches based on slab walls and examine the sinking rates of these geological structures. Engage with an in-depth Q&A session covering various aspects of Pacific Northwest geology and plate tectonics. Perfect for geology enthusiasts and students seeking to expand their knowledge of the region's complex geological history.

Video Start
Lecture Start
Spreading Ridges: Looking Back and Forward
Slab Walls
Wrangellia and Insular Superterrane Review
Eastward Subduction
Westward Subduction
Schedule and Eocene Papers
Karin Sigloch
Karin's Electrical Engineering Background
Slabs Under Pacific NW and North America
Tomographic Model of Slabs
Subduction of the Farallon Plate
Slab Walls East of Farallon Slab
Hypothesis: Slab Walls Mean Fixed Trenches
How fast are the slab walls sinking?
Extra Ocean Basin Subducted Westward
Q&A with Karin
Q&A with Nick
Toast and Goodbye