Geology ID: 97 This file appears in: Geology View of marker 209A This file appears in: Geology GeologyBy The Explore Nebraska History teamExposed on these slopes are two Tertiary age sedimentary rock formations, the Brule and the Ogallala. The Brule, the lower and older, is a brown siltstone containing volcanic ash blown into Nebraska…
GeologyBy The Explore Nebraska History teamExposed on these slopes are two Tertiary age sedimentary rock formations, the Brule and the Ogallala. The Brule, the lower and older, is a brown siltstone containing volcanic ash blown into Nebraska…
