Photograph of a monocline of La Plata (or Wingate) sandstone over Dolores (Chinle) formation on the east face of Skeleton Mesa, about 15 miles north of Marsh Pass, Arizona, in 1910. Photo 347 from Herbert E. Gregory Book 4: Navajo, San Juan 1910
Photograph showing cliffs with La Plata sandstone at the mouth of Tsegi Canyon on the Navajo Reserva...
Photograph of tilted La Plata sandstone overlying Dolores strata near Kayenta, Arizona, in 1913. Ph...
Photograph of exposed La Plata sandstone at Navajo Springs [location undetermined], Arizona, in 1910...
Photograph of a monocline of La Plata (or Wingate) sandstone over Dolores/Chinle formation on the ea...
Photograph of the monocline on southeast side of Skeleton Mesa, 2 miles east of the mouth of Tsegy C...
Photograph by K. C. Heald of La Plata sandstone exposed at Marsh Pass, Arizona,1913. View is northea...
Photograph of the monocline on southeast side of Skeleton Mesa, 2 miles east of the mouth of Tsegy C...
Photograph of beds of sandstone dipping southeast under Black Mesa, as seen from Marsh Pass, Arizona...
Photograph of La Plata (Wingate) sandstone over Dolores siltstone in Piute Canyon, Arizona, in 1913....
Photograph by K. C. Heald of La Plata sandstone exposed at Marsh Pass, Arizona, in 1913. Photo 835 f...
Photograph by K. C. Heald of two mesas of La Plata and Dolores rock, possibly near Round Rock, Arizo...
Photograph by K. C. Heald of La Plata sandstone exposed at Marsh Pass, Arizona, in 1913. View is no...
Photograph by K. C. Heald of La Plata sandstone exposed at Marsh Pass, Arizona, in 1913. Photo 837 f...
Photograph of rocky terrain of Dolores and La Plata (Wingate) sandstone west of Chinle, Arizona, in ...
Photograph showing cliffs with La Plata sandstone at the mouth of Tsegi Canyon on the Navajo Reserva...
Photograph showing cliffs with La Plata sandstone at the mouth of Tsegi Canyon on the Navajo Reserva...
Photograph of tilted La Plata sandstone overlying Dolores strata near Kayenta, Arizona, in 1913. Ph...
Photograph of exposed La Plata sandstone at Navajo Springs [location undetermined], Arizona, in 1910...
Photograph of a monocline of La Plata (or Wingate) sandstone over Dolores/Chinle formation on the ea...
Photograph of the monocline on southeast side of Skeleton Mesa, 2 miles east of the mouth of Tsegy C...
Photograph by K. C. Heald of La Plata sandstone exposed at Marsh Pass, Arizona,1913. View is northea...
Photograph of the monocline on southeast side of Skeleton Mesa, 2 miles east of the mouth of Tsegy C...
Photograph of beds of sandstone dipping southeast under Black Mesa, as seen from Marsh Pass, Arizona...
Photograph of La Plata (Wingate) sandstone over Dolores siltstone in Piute Canyon, Arizona, in 1913....
Photograph by K. C. Heald of La Plata sandstone exposed at Marsh Pass, Arizona, in 1913. Photo 835 f...
Photograph by K. C. Heald of two mesas of La Plata and Dolores rock, possibly near Round Rock, Arizo...
Photograph by K. C. Heald of La Plata sandstone exposed at Marsh Pass, Arizona, in 1913. View is no...
Photograph by K. C. Heald of La Plata sandstone exposed at Marsh Pass, Arizona, in 1913. Photo 837 f...
Photograph of rocky terrain of Dolores and La Plata (Wingate) sandstone west of Chinle, Arizona, in ...
Photograph showing cliffs with La Plata sandstone at the mouth of Tsegi Canyon on the Navajo Reserva...
Photograph showing cliffs with La Plata sandstone at the mouth of Tsegi Canyon on the Navajo Reserva...
Photograph of tilted La Plata sandstone overlying Dolores strata near Kayenta, Arizona, in 1913. Ph...
Photograph of exposed La Plata sandstone at Navajo Springs [location undetermined], Arizona, in 1910...