Grand Canyon National Park, Arizona. Atokan Conglomerate, at the base of an upper slope unit of the Watahomigi Formation.
Summary
Grand Canyon National Park, Arizona. Atokan Conglomerate, at the base of an upper slope unit of the Watahomigi Formation. Base of Atokan rocks, mostly of chert and reddish-brown jasper with angular, closely packed clasts. Specimen from Thunder River Trail. Figure J2-C, U.S. Geological Survey Professional paper 1173.
Summary
Grand Canyon National Park, Arizona. Atokan Conglomerate, at the base of an upper slope unit of the Watahomigi Formation. Base of Atokan rocks, mostly of chert and reddish-brown jasper with angular, closely packed clasts. Specimen from Thunder River Trail. Figure J2-C, U.S. Geological Survey Professional paper 1173.
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