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New Interpretations of Old Strandlines

Montana Natural History Center 120 Hickory Street, Missoula, MT

It’s that time of the year! Time to contemplate ice ages and glacial lakes. Time for the Glacial Lake Missoula Chapter of the Ice Age Floods Institute’s Cabin Fever Lecture!  Warm up your curiosity about those iconic strandlines we can see from town with a lecture from renowned geologist James W. Sears. New “LiDAR ” mapping techniques may imply that the famous Lake Missoula strandlines on Mount Sentinel and Mount Jumbo record only one draining of the ice-age lake. The draining coincided with massive erosion at the bottom of the lake, but passive lowering of lake level at the top, marked by short-term strandlines cut a few inches into thin colluvial soil on the mountainsides. About the Instructor: Dr. James W. Sears received his PhD from Queen’s University, Canada, in 1979, and has taught at the University of Montana since 1982. This is a live event that will not be recorded or streamed.

Terroir and the floods

(12Dec24) Scott Burns is back in March to talk about the impact the Ice Age Floods had on vinticulture in the Pacific Northwset.  Join us as Scott explains how the Floods influenced the regional properties of Northwest soils and ultimately made the Pacific Northwest one of the prime wine producing regions in the United States. The "virtual wine tasting" will happen at our chapter meeting 04Mar2025 at 7:00pm at Bellevue College, Building B ,ROOM 104.  This lecture will be in-person and livecast on Zoom. Click on Zoom link:   https://us02web.Zoom.us/j/82985244730 Bellevue College, Bldg B Rm 104

1.5 Million Years of Climate Data from the Antarctic Drilling Project

(05Dec2024) The Mid-Pleistocene Transition (MPT), where the Pleistocene glacial cycles changed from 41 to ∼100 kyr periodicity, is one of the most intriguing unsolved issues in the field of paleoclimatology. Jerry McManus is an AGU Fellow who is Chair of Columbia University's Environmental School. He spent time in Antarctica as part in a European-led consortium project to drill down an existing drill hole to punch back another half-million years of climate data from ice in the Antarctic Ice Sheet. The goal of the project was to get a continuous ice record reaching back past the Mid Pleistocene Transition (MPT) to get a better perspective on the short cycle into the long cycle transition. At our May meeting, Jerry will present an early glimpse on what the team discovered.  The May 05 meeting will be held in Bellevue College, Room B104.  The program begins at 7:00 PM.

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