SO! General Meeting
Covid policy: Full Covid 19 vaccination regimen and masks required indoors.
5:00-6:00 PM: New member orientation session
6:00-6:30 PM: Social half hour with no refreshments.
6:30-7:30 PM: meeting and presentation.
Presentation title: When ancient climate and continents collided; the tropical beaches and lost rivers of Hermosa Mountain
Speaker: Gary Gianniny
Presentation summary: Tropical Durango? Approximately 315- to 305 million years ago the place we call home was about 5 degrees north of the equator, and on the down-wind western margin of the largest continent this world has ever known. The strata which make up Hermosa Mountain, and the beautiful cliffs which mirror the sides of the Animas Valley near Hermosa, tell a tale of changing climate and mountains which towered over the region, only to be eroded completely away. At times our region was covered with clear tropical oceans teaming with ocean life, and forest-covered river deltas, only to switch to hyper-arid times marked by deposits of salt, gypsum, when the most abundant life locally was bacterial mats. These ancient deposits host aquifers, hot springs, oil, gas, and even Helium resources in this region. In this talk, I invite you to see the evidence of this tale as discovered by our research team composed of Fort Lewis College students, faculty, and my colleagues from across the west.
Speaker bio: Gary Gianniny is a geology professor at Fort Lewis College in Durango, CO and an avid southwestern US river rafter. His research and that of his students focuses on sedimentary geology associated with aquifers and oil and gas, climate change, water issues and other related topics in the southwestern United States. Several of his research areas are accessed while rafting southwestern US rivers
Meeting Place: Durango Rec Center 6:00 pm
Difficulty Info: Easy, fun and informative