Ice Age Floods Institute Masthead


Wednesday, December 2, 2015
Ellensburg Chapter
'Puget Sound Beaches: The Dynamics of Sediment Supply'
Location: Ellensburg, Washington
7 P.M. CWU's Hebeler Hall Auditorium. Lecture by Wendy Gerstel, Qwg Applied Geology. The health of beaches in Puget Sound depends in large part on sediment input from a variety of sources. To date, characterizing these sources has focused on the mapping of coastal bluffs by their relative degree of exposure and height. This mapping has provided a valuable qualitative tool for shoreline planners and permitting agencies. Modeling and large-scale sediment budget studies have provided quantitative estimates of sediment input from the major rivers of Puget Sound; however, one piece of the fluvial sediment input puzzle remains elusive and debated - that of input from the many small streams. Property damage, chronic road repairs, and active deltas give evidence to the significance of the sediment contribution to coastal beaches from small streams. A recent study for Kitsap County applied a new approach to characterizing sediment input sources to coastal beaches. This approach modifies previous mapping methods by characterizing landslide types in glacial sediments, and includes a qualitative analysis of stream basin morphology and processes to assess and rate relative sediment input potential. Resulting map products, based on remote and field mapping, are allowing Kitsap County to evaluate shoreline reaches for their habitat value, and to develop strategies for restoration and protection of natural coastal and watershed processes.
More Information: Nick Zentner 509-963-2828

Tuesday, December 8, 2015
Wenatchee Valley Erratics Chapter
How Volcanoes Work & Volcanism in the Pacific Northwest
Location: Wenatchee Valley Museum, 127 South Mission, Wenatchee
Wenatchee Valley Erratics Chapter of the Ice Age Floods Institute will meet at 7:00 P.M., Tuesday, December 8 at the Wenatchee Valley Museum, 127 South Mission, Wenatchee. Why do volcanoes erupt? Why do some erupt explosively and others gush lavas? Our speaker, Dr. Wendy Bohrson, CWU Distinguished Professor of Geology, will discuss “How Volcanoes Work & Volcanism in the Pacific Northwest.” Why are the Cascade volcanoes where they are, and what is the source of their magma along the Cascadia subduction zone? What happened at the Mt. Mazama eruption that later formed Crater Lake? Recent research may provide clues about conditions required to catalyze such a large, explosive eruption that blanketed the Pacific Northwest with pinkish-white ash. Don’t miss this talk, by an internationally revered research volcanologist! The program is free & open to the public.
More Information: Brent Cunderla, Chapter President (509) 860-6067

Wednesday, January 13, 2016
Ellensburg Chapter
Washington's Earthquake Early warning System
Location: Ellensburg, washington
7 P.M. CWU's Hebeler Hall Auditorium. Tim Melbourne, CWU Geology. Details to follow soon.

Thursday, February 4, 2016
Ellensburg Chapter
'Dating the Ice Age Floods using Cosmogenic Nuclides'
Location: Ellensburg, Washington
7 P.M.. CWU's Hebeler Hall Auditorium. Lecture by Andrea Balbas, Oregon State University. Details to follow.
More Information: Nick Zentner 509-963-2828

Saturday, April 30, 2016
Columbia Gorge Chapter
Columbia Gorge Geology Field Trip
Location: Begins/Ends Cascade Locks, OR
7:30 am - 5:00+ pm - Landslides, eddy bars, glacial erratics, kolk ponds, anticlines, synclines, thrust faults, Ohanepecosh to Troutdale formations, lahars, tree casts, petroglyphs, and more. The central Columbia River Gorge is like a storybook of the past 40-50 million years, and we will open and read from several chapters of that book in a 10 hour bus/walking tour of a 40 mile section of the Gorge between Bonneville Dam and The Dalles. As we turn some of those pages and take a glimpse into the incredible geology and more of the Columbia River Gorge, we will reveal many secrets that are hidden right in plain sight. This tour features huge landslides, local and distant lava outpourings that built mountains, filled lakes, and left behind the ghosts of lava-consumed forests; cataclysmic floods that reshaped the landscape; native american art saved from the backwaters of The Dalles Dam; the lush flora of the Gorge; maybe even a present-day mini-safari. It will involve some easy walking, but more importantly, it will enlighten your mind and light your eyes with amazing and delightful discoveries. If you are interested in participating in our next field trip please download and complete the Gorge Geology FieldTrip Registration Form. For more information contact us at To get a sense of the trip, click the map markers below to explore some of the many features along the fieldtrip route (we will not stop at or see them all) or download the IAFI-CGC Central Gorge Geology Fieldtrip Guide.
Gorge Geology FieldTrip Registration Form
More Information: Lloyd DeKay 713-542-4359

Friday-Saturday September 23-24, 2016
Glacial Lake Missoula Chapter
Annual meeting/Bus tour
Location: Holiday Inn Downtown, Missoula, Mt
Annual meeting evening of 9/23. View the new JT Pardee historical collection and display at the Natural History center. A bus trip featuring iconic features of Lake Missoula including the Markel pass ripples marks the following day. The hotel venue is at the center of all that is happening in Missoula. The center of the river walk , bike trails and walking bridges. Dining from casual Cajun to gourmet. The carousel, Brennans wave or the hipstrip. The UM, numerous brewerys or the History Center are within 3/4 mile mile walk
More Information: Jim shelden 406 728 1860