From April 27-30 the Department of Earth and Environmental Sciences hosted the 30th Annual Keck Geology Consortium Symposium at Wesleyan. The event involved several field trips to local sites of geographic significance and concluded with presentations at Exley Science Center from those who attended the field trips. The first trip was led by Paul Olsen, the Arthur D. Storke Memorial Professor of Earth and Environmental Sciences at Columbia University. This excursion examined the Connecticut River Valley Basin for remaining traces of the mass extinction that preceded the rise of the dinosaurs 202 million years ago. "The Connecticut River Valley Basin is one…