Calendar of Events

Glacial Lake Missoula and its Giant Floods
Apr 6 @ 7:00 pm – 8:00 pm
Glacial Lake Missoula and its Giant Floods @ CWU's Science II Building, room 103

It’s generally accepted that the Clark Fork River was dammed during the last ice age by a glacier at the current location of Lake Pend Oreille near the Idaho/Montana border.  The lake rose and fell multiple times.  At its maximum, the lake was 2000 feet (610 m) deep at the ice dam, 1000 feet (305 m) deep at Missoula, and extended up multiple valleys in Montana.  

Larry Smith of Montana Tech will present evidence of multiple fillings of Glacial Lake Missoula near the end of the last Ice Age. Everyone is invited at 7:00 pm on Thursday, April 6, in CWU’s Science II Building room 103, 

Glaciolacustrine sediments in the Clark Fork River valley at Garden Gulch, near Drummond, MT allow for documenting highstand positions in glacial Lake Missoula and repeated subaerial exposure of the lake bottom.  Sandy alluvial sediment below the glaciolacustrine section locally interfingers with the lowermost lake-bottom sediments, showing concurrent deposition of the alluvium with the transgressing lake.  Cycles of lake deepening, subaerial exposure, and periglacial modification are represented in a 9 m-thick section.  

Optical dating of quartz show that glacial Lake Missoula reached >65% of maximum capacity by 17-24 ka and either partially or completely drained twelve times from this position.  Others have inferred that the lake rose and fell 35-90 times, but many of those events possibly did not reach the maximum elevation seen near Drummond.
Larry Smith is an associate professor in the Department of Geological Engineering at Montana Tech.  He has been studying glacial Lake Missoula for about 17 years.  He got interested in the lake deposits while working at the Montana Bureau of Mine and Geology.  He studied the huge gravel deposits in the Alberton Gorge are, which were moved during cataclysmic lake drainages.  The gravels host the aquifers that residents use for groundwater.  Larry has Bachelor’s, Master’s, and Ph.D degrees in geology from University of California, Santa Cruz and the University of New Mexico.  He has lived in Butte for 23½ years.
Lecture sponsored by the Ellensburg Chapter of the Ice Age Floods Institute.

Western Scablands of the Ice Age Floods
Apr 14 all-day
Western Scablands of the Ice Age Floods @ Begins and ends at The Hanford Reach Interpretive Center | Richland | Washington | United States

Join field trip leader Gary Kleinknecht as you go “upstream” from the Tri-Cities into the Quincy Basin.  Participants will see evidence of the erosive power of the floods at the Othello and Drunheller Channels and Frenchman Coulee.  We will also get a fantastic view of the Columbia River and the giant current ripples of West Bar as well as a visit to Gingko Petrified Forest State Park.  This tour is organized by the Hanford Reach Interpretive Center in partnership with the Lake Lewis Chapter of the IAFI.  Bus, water and lunch are provided.  Duration is 8:00 AM to 5:00 PM.

2017 Spring IAFI Board Meeting
Apr 22 @ 12:00 pm – Apr 23 @ 12:15 pm
2017 Spring IAFI Board Meeting @ Pasco Best Western | Pasco | Washington | United States

The Spring Board of Directors meeting of the Ice Age Floods Institute will be held April 22-23 at the Best Western Plus in Pasco, WA. 

More information to follow

2017 IAFI Fall Board/Membership Meeting & Field Trip
Sep 29 @ 8:00 am – Sep 30 @ 5:00 pm
2017 IAFI Fall Board/Membership Meeting & Field Trip @ Soap Lake | Washington | United States

The semi-annual meeting of the Board of Directors and the annual Membership Meeting and Field Trip will be Sept 29 and 30, 2017 in Soap Lake, WA.

More information will be forthcoming.