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GEOREF RECORD

Geologic and anthropogenic history of the Palouse Falls area; floods, fractures, clastic dikes, and the receding falls

Chad J. Pritchard and Larry Cebula
Geologic and anthropogenic history of the Palouse Falls area; floods, fractures, clastic dikes, and the receding falls (in Exploring the geology of the inland Northwest, Reed S. Lewis (editor) and Keegan L. Schmidt (editor))
Field Guide (Geological Society of America) (2016) 41: 75-92

Abstract

This one-day field trip of geologic and historical significance goes from Washtucna, Washington, through Palouse Falls State Park, Lyons Ferry State Park, and Starbuck, and ends in the Tucannon River valley. At Palouse Falls, it is readily apparent why Native Americans crafted stories about the origins of this spectacular area and why geologic debates regarding the role of Pleistocene glacial Lake Missoula floods during the formation of this natural wonderland have been centered here. This field trip focuses on structural geology and the Palouse Falls fracture zone, Columbia River Basalt Group stratigraphy at the falls, and subsequent erosion by glacial outburst floods. Discussion of the falls will include human history and the formation of Palouse Falls State Park. The main stop at Palouse Falls will explore the stratigraphy of the Columbia River Basalt Group, Vantage Member, loess islands, fracture zones, and human history dating back at least 12,000 yr. Driving south through Lyons Ferry State Park and the Tucannon Valley, we will discuss topics ranging from the Palouse Indians to sheep herding and from clastic dikes to terracettes.


ISSN: 2333-0937
EISSN: 2333-0945
Serial Title: Field Guide (Geological Society of America)
Serial Volume: 41
Title: Geologic and anthropogenic history of the Palouse Falls area; floods, fractures, clastic dikes, and the receding falls
Title: Exploring the geology of the inland Northwest
Author(s): Pritchard, Chad J.Cebula, Larry
Author(s): Lewis, Reed S.editor
Author(s): Schmidt, Keegan L.editor
Affiliation: Eastern Washington University, Department of Geology, Cheney, WA, United States
Affiliation: University of Idaho, Idaho Geological Survey, Moscow, ID, United States
Pages: 75-92
Published: 2016
Text Language: English
Publisher: Geological Society of America, Boulder, CO, United States
References: 69
Accession Number: 2016-083403
Categories: Quaternary geology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. strat. col., geol. sketch maps
N46°13'00" - N46°43'00", W119°27'00" - W118°13'00"
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States
Update Code: 201640
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