Repeated Deformation along Lake Rufus Woods, WA
Shear stress at the base of the overriding flow is transmitted to the substrate. Soupy and clay-rich substrate material is partially...
Periglacial Soil Wedges East of Glacier National Park
Brown soil wedges follow polygonal crack networks in fine grained sediment (lakebeds) south of Browning, MT. The features formed during...
Clastic Dikes at Metalline Falls, WA
Olaf P. Jenkins took these photos in 1924 near Metalline Falls, WA. They show Pleistocene-age clastic dikes intruding rippled...
