By: D. Sack
The Roy quadrangle lies just west of Ogden on the lower to middle piedmont zone between Great Salt Lake and the Wasatch Range. Elevations increase from northwest to southeast across the quadrangle, and extend from about 4,208 feet on the modern Weber River delta of Great Salt Lake to approximately 4,768 feet on the Weber River?s relict Provo-level delta of late Pleistocene Lake Bonneville.
Geologic map units represent the late Quaternary alluvial, deltaic, lacustrine, mass wasting, and marsh environments of deposition found in the study area. In addition, the map portrays preserved portions of the Gilbert shoreline of Great Salt Lake. Relative age control and age estimates for the map units derive primarily from the established chronology of Lake Bonneville and Great Salt Lake.
Pages: 22 p.
Plates: 2 pl.
Location: Davis County and Weber County
Media Type: Paper Map