Announcement Box Sunday, November 6, 2005 Week 12 Friday's Lecture Notes	Large-scale aeolian cross beds in the Jurassic Navajo Sandstone, Zion National Park, Utah. Festoon cross beds such as these are the most prominent sedimentary structure associated with sand dunes. Can you tell which way the prevailing winds were blowing when these sand dunes were deposited?

GSCI 675 - Geoscience Visualizations Dr. Ron Schott, Assistant Professor of Geology Fort Hays State University - Geosciences Dept. 600 Park Street, Hays, KS  67601-4099 Phone: (785)628-5348  Fax: (785)628-4096 E-mail: rschott@fhsu.edu Web: http://hays.outcrop.org/schott/ Page content last revised on: 06 November 2005