Name derived from exposures 4 mi long and half a mi wide which form a gentle, northwest sloping surface west of Oxbow Creek, northern Yellowstone Park, WY, Yellowstone province. No type locality designated. Composed of two flows separated by a red soil 1 ft thick. No detailed lithologic description given. Shows no evidence of deformation. Terminates in a scarp 15 to 20 ft high. Is younger than Crescent Hill basalt (new) and fresher than Crescent Hill. Is post-rhyolite in age. Shown on table 9 as Miocene-Pliocene. Geologic map.
Source: GNU records (USGS DDS-6; Denver GNULEX).
For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.
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