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1 Casto Bluff head of Casto Canyon southwest edge of Sevier Plateau. Acidic lava underlain by Sevier(?) formation, Garfield County, UT, 19411941Image
2 Casto Bluff, detail thick lava beds in Sevier(?) formation1941Image
3 Castro Bluff, detail pumice conglomerate in Sevier formation1941Image
4 Castro Bluff, detail thin beds (upper) in Sevier(?) formation1941Image
5 Castro Bluff, view looking westward from its base. Terrace developed in the Sevier(?) formation at the top of the Wasatch formation1941Image
6 Conglomerates, base of Timpoweep member of the Moenkopi Tarper Creek. Washington County, UT. 19411941Image
7 Contact of Triassic and Permian (beds in wall wrinkled at base). Cherty limestone lower left. Camp Creek. Iron County, UT. 19411941Image
8 Fault, Wasatch limestone (extreme right) in horizontal contact with undifferentiated Cretaceous. Parowan Canyon. Iron County, UT1941Image
9 Fault, Wasatch limestone (extreme right) in horizontal contact with undifferentiated Cretaceous. Parowan Canyon. Iron County, UT1941Image
10 General view of eroded Pink Cliffs (Wasatch formation) near Cedar Breaks, Iron County, UT1941Image
11 Glacial till, Castle Creek below Sidney Valley. Top of Markagunt Plateau. Iron County, UT. 19411941Image
12 Herbert E. Gregory Book 11: Colorado Plateau, 1938-19421938; 1939; 1940; 1941; 1942Image
13 Hurricane Cliffs looking north across mouth of Swayne Creek. Iron County1941; 1942Image
14 Kaiparowits formation Cretaceous. Conglomerate (pinnacles) in contact with bedded arkosie sandstone. Parowan Canyon. Iron Co1941Image
15 Kaiparowits formation near southwest corner of Cedar Breaks National Monument. Iron County, UT. 19411941Image
16 Kaiparowits formation on Cedar City, Cedar Breaks road above Wood's Ranch. Iron County, UT. 19411941Image
17 Kaiparowits formation unconformable below Wasatch limestone south, foot of Parowan Canyon, Iron County, UT. 19411941Image
18 Kaiparowits formation, head of Deep Creek, Iron County, UT. 19411941Image
19 Mouth of Camp Creek. Resistant limestones of lowest Triassic make walls. Iron County, UT. 19411941Image
20 Natural bridge near top of wall of Ashdown Canyon, Iron County, UT, 19411941Image
21 Panorama of Ashdown Canyon, 600-1800 feet deep, 20-150 feet wide out in Straight Cliffs sandstone. Iron County, UT, 19411941Image
22 Panorama of Ashdown Canyon, 600-1800 feet deep, 20-150 feet wide out in Straight Cliffs sandstone. Iron County, UT, 19411941Image
23 Panorama. Surface of Kolob Terrace near the head of Kolob Creek. Iron County, UT1941; 1942Image
24 Panorama. Surface of Kolob Terrace near the head of Kolob Creek. Iron County, UT1941; 1942Image
25 Same as 2751, shows eroded top of Sevier Plateau1941Image
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