Sharing the Fascinating Ice Age Floods Story Since 1995
How the twisting and turning of 19th-century society crossed up with the Ice Age Floods
Glaciers have shaped much of the Pacific Northwest’s landscape over the past 15,000 years. Geologists and cartographers have been mapping and interpreting glacial landforms since the late 19th century. And now LIDAR helps create incredibly accurate, detailed, and stunning maps.
The Wenatchee Valley Erratics Chapter of the Ice Age Floods Institute will meet Tuesday, June 11 at 7:00 PM, at the Wenatchee Valley Museum and Cultural Center, 127 S. Mission, Wenatchee. Or via Zoom link https://us02web.zoom.us/j/84520197937 Our speaker will be Philip Long of the Lake Chelan Research Institute (LCRI). Phil will talk about “Exploration of Geomorphic Features in Lake Chelan with an Underwater Remotely Operated Vehicle (ROV)” Swath bathymetry, chirp sub-bottom reflection profiles, and sediment cores…. These were techniques recently used by the U.S. Geological Survey (June 2023) to collect data from Lake Chelan, WA, The resulting information has provided insights into late- and post-glacial history of Lake Chelan. In addition, LCRI’s ROV dives have distinguished bedrock from till on lake bottom sediment profiles, and have directly observed landslide scarps, debris aprons, and other geomorphic features of interest to many of us here. Some of the features on the bottom of Lake Chelan resemble surface glacial features we are familiar with on the Waterville Plateau! Moraines, kames, drumlins, kettles, underwater landslides…. Find out what’s going on at the bottom Lake Chelan! The program is free and open to the public. Contact information: Ken Lacy 1geospiracle2@gmail.com (509) 787-9755 Susan Freiberg Wenatchee Valley Erratics Publicity wenvalerratics@yahoo.com
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