Entrada sandstone and lower part of the Morrison formation near the mouth of Cottonwood Wash, Bluff. San Juan County, Utah. 1925.
Dates
Date Taken
1925
Summary
Entrada sandstone and lower part of the Morrison formation near the mouth of Cottonwood Wash, Bluff; the low ledge in the foreground represents the complete thickness of the Entrada sandstone near the southern limit of the formation. The slope forming beds and the massive ledge of sandstone ("Bluff sandstone") make up the lower part of the Morrison formation. San Juan County, Utah. 1925. Plate 19-A, in U.S. Geological Survey. Professional paper 183. 1936.
Summary
Entrada sandstone and lower part of the Morrison formation near the mouth of Cottonwood Wash, Bluff; the low ledge in the foreground represents the complete thickness of the Entrada sandstone near the southern limit of the formation. The slope forming beds and the massive ledge of sandstone ("Bluff sandstone") make up the lower part of the Morrison formation. San Juan County, Utah. 1925. Plate 19-A, in U.S. Geological Survey. Professional paper 183. 1936.
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