Photo of Edna Hope Gregory and Entrada sandstone in a Dry Wash, San Juan County, Utah, 1927. Photograph from Herbert E. Gregory Book 9: Utah, California, 1924-1928
Photo shows erosion surface truncating beds below Shinarump sandstone, west of Navajo Springs. Comb ...
Photo shows Morrison Formation erosion, just above heavy sandstone base. Near mouth of Recapture Cre...
Photo shows a beveled erosion surface above alluvium flat into which is cut Deer Range wash, in Kane...
Photo of Edna Hope Gregory and Entrada sandstone in a Dry Wash, San Juan County, Utah, 1927. Photogr...
Photo shows Entrada sandstone erosion, north branch of Whiskers Creek, looking south, San Juan Count...
Photo shows a view of geology in San Juan County, Utah, with detail of erosion in Entrada sandstone ...
Photo shows erosion in Alluvial fill, Cottonwood Wash, San Juan County, Utah, 1928, taken by Fred Lo...
Photo shows unconformity of Navajo sandstone and Entrada sandstone in a Dry Wash, San Juan County, U...
Photo shows a view of geology in San Juan County, Utah, with south wall of Dry Wash, entrada sandsto...
Photo shows erosion features in Entrada sandstone at Antimony Canyon, Garfield County, Utah, in 1943...
Photo shows a view of Dry Wash with heavy red bed Entrada in McElmo formation, San Juan County, Utah...
Photo shows a view in San Juan County, Utah, taken in 1928. Geology: Red sandstone, Carmel formation...
Photo shows alluvial fill exposed by recent erosion at Comb Wash, San Juan County, Utah, in 1929. Ph...
Photo shows Entrada sandstone with yellow-red bed, located above Navajo sandstone in Allen Canyon. S...
Photo shows erosion surface truncating beds below Shinarump sandstone, west of Navajo Springs. Comb ...
Photo shows Morrison Formation erosion, just above heavy sandstone base. Near mouth of Recapture Cre...
Photo shows a beveled erosion surface above alluvium flat into which is cut Deer Range wash, in Kane...
Photo of Edna Hope Gregory and Entrada sandstone in a Dry Wash, San Juan County, Utah, 1927. Photogr...
Photo shows Entrada sandstone erosion, north branch of Whiskers Creek, looking south, San Juan Count...
Photo shows a view of geology in San Juan County, Utah, with detail of erosion in Entrada sandstone ...
Photo shows erosion in Alluvial fill, Cottonwood Wash, San Juan County, Utah, 1928, taken by Fred Lo...
Photo shows unconformity of Navajo sandstone and Entrada sandstone in a Dry Wash, San Juan County, U...
Photo shows a view of geology in San Juan County, Utah, with south wall of Dry Wash, entrada sandsto...
Photo shows erosion features in Entrada sandstone at Antimony Canyon, Garfield County, Utah, in 1943...
Photo shows a view of Dry Wash with heavy red bed Entrada in McElmo formation, San Juan County, Utah...
Photo shows a view in San Juan County, Utah, taken in 1928. Geology: Red sandstone, Carmel formation...
Photo shows alluvial fill exposed by recent erosion at Comb Wash, San Juan County, Utah, in 1929. Ph...
Photo shows Entrada sandstone with yellow-red bed, located above Navajo sandstone in Allen Canyon. S...
Photo shows erosion surface truncating beds below Shinarump sandstone, west of Navajo Springs. Comb ...
Photo shows Morrison Formation erosion, just above heavy sandstone base. Near mouth of Recapture Cre...
Photo shows a beveled erosion surface above alluvium flat into which is cut Deer Range wash, in Kane...