Photo shows unconformity of Navajo sandstone and Entrada sandstone in a Dry Wash, San Juan County, Utah, 1927. Photograph from Herbert E. Gregory Book 9: Utah, California, 1924-1928
Negative of a photo shows Navajo sandstone with an unidentified man on horseback, at Junction of Col...
Negative of a photo shows erosion surface truncating beds below Shinarump sandstone, west of Navajo ...
Photo shows Navajo sandstone along a branch of Parashant Wash north of Cane Beds, Arizona. Kane Coun...
Photo shows unconformity of Navajo sandstone and Entrada sandstone in a Dry Wash, San Juan County, U...
Photo shows a view of Dry Wash with contact of Navajo sandstone and McElmo formation, San Juan Count...
Photo of Edna Hope Gregory and Entrada sandstone in a Dry Wash, San Juan County, Utah, 1927. Photogr...
Photo shows a view of geology in San Juan County, Utah, with south wall of Dry Wash, entrada sandsto...
Photo shows a view of Dry Wash with heavy red bed Entrada in McElmo formation, San Juan County, Utah...
Photo shows Entrada sandstone with yellow-red bed, located above Navajo sandstone in Allen Canyon. S...
Photo shows a view of Navajo sandstone with waterpockets near Castle uplift. San Juan County, Utah, ...
Photo shows a view in San Juan County, Utah, taken in 1928. Geology: Red sandstone, Carmel formation...
Photo shows beds lying with unconformity immediately on top of massive Bluff sandstone near mouth of...
Photo showing Carmel Formation overlying Navajo Gray Mesa, San Juan County, Utah, 1927. Photograph f...
Negative of a photo shows Navajo sandstone with an unidentified man on horseback, at Junction of Col...
Negative of a photo shows erosion surface truncating beds below Shinarump sandstone, west of Navajo ...
Photo shows Navajo sandstone along a branch of Parashant Wash north of Cane Beds, Arizona. Kane Coun...
Photo shows unconformity of Navajo sandstone and Entrada sandstone in a Dry Wash, San Juan County, U...
Photo shows a view of Dry Wash with contact of Navajo sandstone and McElmo formation, San Juan Count...
Photo of Edna Hope Gregory and Entrada sandstone in a Dry Wash, San Juan County, Utah, 1927. Photogr...
Photo shows a view of geology in San Juan County, Utah, with south wall of Dry Wash, entrada sandsto...
Photo shows a view of Dry Wash with heavy red bed Entrada in McElmo formation, San Juan County, Utah...
Photo shows Entrada sandstone with yellow-red bed, located above Navajo sandstone in Allen Canyon. S...
Photo shows a view of Navajo sandstone with waterpockets near Castle uplift. San Juan County, Utah, ...
Photo shows a view in San Juan County, Utah, taken in 1928. Geology: Red sandstone, Carmel formation...
Photo shows beds lying with unconformity immediately on top of massive Bluff sandstone near mouth of...
Photo showing Carmel Formation overlying Navajo Gray Mesa, San Juan County, Utah, 1927. Photograph f...
Negative of a photo shows Navajo sandstone with an unidentified man on horseback, at Junction of Col...
Negative of a photo shows erosion surface truncating beds below Shinarump sandstone, west of Navajo ...
Photo shows Navajo sandstone along a branch of Parashant Wash north of Cane Beds, Arizona. Kane Coun...