

Repeated Soft Sediment Deformation - Lake Rufus Woods, WA
Shear stress at the base of the overriding flow is transmitted to the substrate, forming these structures. Soupy and clay-rich substrate...


Pleistocene(?) Alluvial Stratigraphy - Lind Coulee, WA
Non-flood sediments of Pleistocene age are well exposed along Crab Creek in Lind Coulee east of O'Sullivan Dam. Very little has been...


Structureless Sandstone Beds - White Bluffs, WA
Structureless sand is fairly unusual in the geologic record. Sandy sediment deposited by flowing water always preserves bedforms....


Old Maid Coulee Site Geology - Connell, WA
The Old Maid Coulee site, located near Connell, WA, contains convincing evidence of "pre-late Wisconsin" flooding. Geologists distinguish...


Dry Hollow Site Geology near Clyde, WA
Outcrop sketch: For large outcrops, I will take a panoramic photo, draw a quick map, and make a sketch in my field book. If I have the...


Sanpoil-style Syn-sedimentary Deformation
Undeformed flood package. A single, meter-thick Missoula flood bed formed by when a rush of water, released out of western Montana,...


Slide Planes, Mud Squirts & Diamicts in Upper Grand Coulee
Brian Atwater always makes you feel like a million bucks. He invited me to join a group of geologists meeting in the Upper Grand Coulee...


Calcrete Field Trip 2021 - Stokrose Gravel Pit
Stokrose Gravel is a large, active pit and gravel stockpile located in Lind Coulee 7 miles east of Warden, WA off Lind-Warden Road (Road...


Calcrete Field Trip 2021 - Overview
Geology Field Guide to the Rain Shadow Calcretes near Othello, WA Northwest Geological Society September 17-19, 2021 Skye W. Cooley
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Calcrete Field Trip 2021 - Warden Canal
Directions - From Othello, drive north on Hwy 17 and turn R (east) on Hwy 170/Rd 8 SE at the '76 gas station toward Warden. Follow for...