All-around geologist, climber, and educator Roald Hilding Fryxell in Levis on Eagles Rest Peak, Teton Range. WY c. 1953. Son of Fritiof and Regina Fryxell, Roald exemplified the qualities of a great Geology professor: He worked broadly across disciplines mostly in the field.

Shear stress at the base of the overriding flow is transmitted to the substrate. Soupy and clay-rich substrate material is partially sheared off, peeled away, and incorporated into the flow, becoming internally deformed (plastic deformation) as the flow comes to rest. Structures in this outcrop are fine-scale versions of "no-slip flow" features produced by large-scale turbidity currents in marine settings (Sobieskiak et al., 2018) commonly observed in high-res seismic imagery

Brown soil wedges follow polygonal crack networks in fine grained sediment (lakebeds) south of Browning, MT. The features formed during the Pleistocene under periglacial conditions in a ground ice region mapped by Murton (2020) and French (2017). Periglacial wedges are reported in the Lemhi Range of Idaho (Butler, 1984), the Owl Cave-Wasden Site on the Snake River Plain (Dort, 1968; Butler, 1969), Glacial Lake Missoula basin in western Montana (Chambers, 1984; Chambers and Cu