Preliminary geologic map of the Mount Hayes quadrangle, eastern Alaska Range, Alaska

Abstract

Scattered exposures of Tertiary continental sedimentary rocks occur north of the Denali fault and consist of, from youngest to oldest, the Nenana Gravel, a sandstone unit, and the sedimentary rocks and coal of the Jarvis Creek coal field (Wahrhaftig and Hickox, 1955). The Nenana Gravel occurs mainly in the northwestern corner of the quadrangle, and north of the Jarvis Creek coal field in the center of the quadrangle. The sandstone unit occurs mainly in fault-bounded prisms along the northern edge of the Alaska Range. The Jarvis Creek coal field occurs between the Delta River and Jarvis Creek, east of the Richardson Highway.