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X-WR-CALDESC:Events for Ice Age Floods Institute
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DTSTART;TZID=America/Los_Angeles:20260714T150000
DTEND;TZID=America/Los_Angeles:20260714T163000
DTSTAMP:20260403T103745
CREATED:20260226T041356Z
LAST-MODIFIED:20260226T042533Z
UID:41768-1784041200-1784046600@iafi.org
SUMMARY:Rathdrum: Dating Erratic Boulders: How Long Ago Were the Floods?
DESCRIPTION:How do geologists know when the ice age floods actually occurred in the Spokane area? One method is to date the large flood-rafted erratic boulders. We explore the ages of the floods and the methods used to determine their dates and present newly gathered dates from the Spokane region revealing when the floods happened.  \nPresented by Glenn Cruickshank\, vice president of the Ice Age Floods Institute (IAFI)\, Cheney-Spokane Chapter \nRegistration is required. It will be linked here as soon as it has been posted to the library website.
URL:https://iafi.org/event/dating-erratics-how-long-ago-were-the-floods-rathdrum/
LOCATION:Rathdrum Library\, 16320 ID-41\, Rathdrum\, ID\, 83858
CATEGORIES:Cheney-Spokane,Presentation
ATTACH;FMTTYPE=image/jpeg:https://iafi.org/wp-content/uploads/Glacial-Erratics-Hwy-200.jpg
ORGANIZER;CN="Cheney-Spokane Chapter":MAILTO:iaficheneyspokane@gmail.com
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BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20260721T130000
DTEND;TZID=America/Los_Angeles:20260721T143000
DTSTAMP:20260403T103745
CREATED:20260226T044918Z
LAST-MODIFIED:20260226T044918Z
UID:41783-1784638800-1784644200@iafi.org
SUMMARY:Spirit Lake: The Ice Age Missoula floods and the Spirit Lake giant current dune field
DESCRIPTION: Giant Current Dunes or MegaRipple Marks – One of Bretz’ most important pieces of evidence for catastrophic flooding was the “giant current dunes.” These large-scale bedforms appeared as patterns of parallel ridges and swales on many aerial photographs in the flood channels in the scabland of Washington\, but had escaped recognition from the ground because of their size.  \nGiant Current Dunes are visible west of Clark Fork near Castle Rock; however\, the most prominent and visible Giant Current Dunes are located several miles east of Spirit Lake along Hwy 54 where the highway cuts through the dunes showing their undulating profile. The location of many of the telephone poles on the crest of these dunes accentuates these landforms. The dunes form transverse to the current direction\, and form cusps that are convex upstream\, with arms that point downstream. Furthermore\, the size of the cusps appears to decrease in the direction of lower velocity. Internally\, the dunes consist of gravel and pebble foresets. \nGiant current dunes exhibit an asymmetrical profile with the downstream (lee) slope steeper than the upstream slope. Crests range from 20 to 200m apart and heights range from 1 to 15m (Baker and Nummedal\, 1978) and are among the largest measured throughout the Floods area. The Spirit Lake current dunes can also be easily recognized from the air by their characteristic pattern\, accentuated by vegetation. This dune field is immediately in the path of the breakout from Lake Pend Oreille\, and experienced some of the highest energy flows. \nPresented by Dr. Linda McCollum\, president of the Ice Age Floods Institute (IAFI)\, Cheney-Spokane Chapter \nRegistration is required. It will be linked here as soon as it has been posted to the library website (https://communitylibrary.net/library/spirit-lake/).
URL:https://iafi.org/event/spirit-lake-floods-and-current-dune-field/
LOCATION:Spirit Lake Library\, 32575 N 5th Ave\, Spirit Lake\, ID\, 83869
CATEGORIES:Cheney-Spokane,Presentation
ATTACH;FMTTYPE=image/jpeg:https://iafi.org/wp-content/uploads/MegaRipples.jpg
ORGANIZER;CN="Cheney-Spokane Chapter":MAILTO:iaficheneyspokane@gmail.com
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BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20260829T100000
DTEND;TZID=America/Los_Angeles:20260829T140000
DTSTAMP:20260403T103745
CREATED:20260215T224751Z
LAST-MODIFIED:20260215T230400Z
UID:41691-1787997600-1788012000@iafi.org
SUMMARY:Bretz Was Right: A Pre‑Birthday Floods‑Fest
DESCRIPTION:Save the date! \nOur chapter is planning a special late‑summer gathering on Saturday\, August 29\, in honor of J Harlen Bretz\, whose birthday falls just a few days later (September 2). Bretz’s groundbreaking work on the Ice Age floods reshaped the scientific understanding of the Northwest—and we think that deserves a celebration. \nWe’re still shaping the details\, but expect a relaxed\, community‑friendly event that highlights Bretz’s legacy and the remarkable landscapes he helped the world understand. More information will be posted as plans develop. \n \n \n  \nHe mapped the scablands bold and bright\,\nSaid “Floods did this!” with all his might.\nFor thirty years they told him “No”…\n’Til evidence began to flow. \nSo join us as we celebrate\nThe man who made the floods make sense —\nA pre‑birthday bash for J Harlen Bretz\,\nWho proved the skeptics wrong (immense!). \n \n 
URL:https://iafi.org/event/bretzfest2026/
CATEGORIES:Activity,Cheney-Spokane,Field Trip
ATTACH;FMTTYPE=image/jpeg:https://iafi.org/wp-content/uploads/2022/06/J-Harlan-Bretz-1-e1771196571336.jpg
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DTSTART;TZID=America/Los_Angeles:20260901T190000
DTEND;TZID=America/Los_Angeles:20260901T200000
DTSTAMP:20260403T103745
CREATED:20260324T052506Z
LAST-MODIFIED:20260325T022516Z
UID:41858-1788289200-1788292800@iafi.org
SUMMARY:Mysteries of the Channeled Scablands and the two Detectives who Solved it.
DESCRIPTION:Giant Pothole near Washtucna\, WA\nOver 100 years ago\, scientists discovered the unique landscape of the Channeled Scablands of Washington. By studying clues in Montana\, Idaho\, Washington\, and Oregon\, two of them pieced together the evidence that led to their conclusion which was scoffed at by many of their colleagues. After more than 20 years of field study and overwhelming evidence\, most of the scientific community finally agreed with them.  \nSee how today\, new detectives are in the field with new technologies to unravel more of the mysteries of the Channeled Scablands.  \nLloyd Stoess\, President of the Palouse Fall Chapter of the IAFI\, will show pictures and explain the evidence of the enormous Missoula Floods that carved our landscape.  \n 
URL:https://iafi.org/event/41858/
LOCATION:Richland Library\, 955 Northgate Dr.\, Richland\, Washington\, 99352
CATEGORIES:All IAFI,Lake Lewis,Presentation
ATTACH;FMTTYPE=image/jpeg:https://iafi.org/wp-content/uploads/250901-scaled.jpg
ORGANIZER;CN="Lake Lewis Chapter":MAILTO:lakelewis@iafi.org
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