Idaho. Cross-beds crowded with pea-sized pumice in a road cut exposure of
fluviatile facies of the Glenns Ferry Formation (late Pliocene) on US 30 about
1.5 miles east of Hammett. The larger grains are pumice. Notice the shells
left of center. September 11, 1960.
Digital File:mhe00272
ID. Malde, H.E. 272