This program is over. Hope you didn't miss it! Browse other programs we offer The Geology of Western National Parks: Crater Lake, Oregon, and Lassen, California Evening Lecture/Seminar Monday, August 7, 2023 - 7:00 p.m. to 8:30 p.m. ET Code: 1NV042 Location: This online program is presented on Zoom. Select your Registration $25 Member $30 Non-Member Save when you purchase this program as a part of one of these series! 3 Program Series: The Geology of Western National Parks View series details Materials for this program Handout Resize text Join geologist Kirt Kempter as he explores the geology of Western National Parks over the course of 2023, with an in-depth look at one location every month. Each program’s content is enhanced by geologic maps, photos, and Google Earth flyovers to reinforce geologic concepts and interpretations. Session Information Crater Lake, Oregon, and Lassen, California Lassen Volcanic and Crater Lake National Parks represent spectacular volcanic features along the Cascade volcanic arc. Still active, these volcanoes are born from the ongoing subduction of the Juan de Fuca plate beneath the North American plate. A visceral eruption from ancient Mount Mazama approximately 7,700 years ago created a 5 by 6-mile wide caldera that today is filled with a pristine crater lake almost 0.6-miles deep. To the south, Lassen Volcanic Center has formed in the past million years, creating a landscape of volcanic domes, cinder cones, and lava flows. Additional Geology of Western National Parks Programs June 5 - Death Valley, California (from our spring series) July 10 - Yosemite, California September 11 - Yellowstone, Wyoming General Information View Common FAQs and Policies about our Online Programs on Zoom.