Probable Eocene Glacial Deposits in the Fort Apache Region, Arizona

Abstract

When the writer wrote his geology of the Fort Apache region, Arizona, much uncemented gravel and bowlders were found capping the mesas and underlying the lava flows. These deposits he placed in the Tertiary and Quaternary. In his section at Canyon creek, Arizona, from the source of that stream to its confluence with Salt river, he gives 125 feet of coarse, uncemented gravel of gneiss and quartzite bowlders capping the clastic rocks. Gilbert's section at the crossing of Canyon creek in that region, which he copies, also gives 20 feet of coarse, uncemented gravel of quartzite and gneiss bowlders.2 Some of the writer's other sections in that region are here copied in whole or in part to show the existence of this material in the various parts of the reservation, as follows:3 Section in Seven-mile Hill canyon, five miles southeast of Fort Apache, Ariz. Feet.