404 N. H. DARTON — CATALOG OF PHOTOGRAPHS 



Indian Territory 



Photographed by J. E. Taff, 1899 



4 by 5 inches. Negatives in United States Geological Survey 



514. Faulted sandstone and shale, Kansas City, Pittsburg and Gulf railway, 



1 mile southeast of Houston (No. 64). 



515. Faulted sandstone and shale, Kansas City, Pittsburg and Gulf railway, 



1 mile southeast of Houston (No. 34). # 



516. Faulted sandstone and shale, Kansas City, Pittsburg and Gulf railway, 



1 mile east (No. 35). 



517. Recumbent fold in sandstone, Saint Louis and San Francisco railway, south 



base of Winding Stair mountain (No. 31a). 



518. Faulted sandstone and shale, Kansas City, Pittsburg and Gulf railway, 



1 mile southeast of Houston (No. 63). 



519. Recumbent fold in sandstone, Saint Louis and San Francisco railway, south 



base of Winding Stair mountain. Panorama (No. 316). 



Iowa 



Photographed by the Geological Survey of Iowa 



5 by 8 inches 



520. Cross-bedding in Coal Measures sandstone ; Redrock, Marion county (No. 79). 



521. Gypsum quarry face ; Cretaceous ; Iowa Plaster Company, Fort Dodge, Web- 



ster county (No. 83). 



522. Dakota formation, showing clays, lignite and sandstone, capped by loess ; Sar- 



geants bluff, Woodbury county, Iowa (No. 87). 



523. Chalk cliff; Niobrara; on Sioux river, Old Crills mill, below Westfield, Ply- 



mouth county (No. 89). 



524. Floodplain of the Missouri ; view taken from high bluffs east of the Sioux 



river ; showing that river at the base ; Dakota lowland between it and the 

 Missouri, with the Nebraska hills south of the Missouri in the distance ; 

 Old Crills mill, below Westfield, Plymouth county, Iowa (No. 102). 



525. Glacial scorings; Kingston, Des Moines county (No. 106). 



526. Till interbedded in loess ; sand pits north of Sioux City, Woodbury county, 



Iowa. The hammer points to a boulder of Sioux quartzite (No. 111). 



527. Quarry in Devonian limestone ; Cedar Valley stage ; showing two parallel 



joints. Near Iowa City, Johnson county, Iowa (No. 124). 



528. Columns of Saint Croix sandstone; Lane's farm; T. 100 N., R. 4, Sec. 31 



(No. 10). 



529. Exposure of Leclaire limestone, obliquely bedded below, horizontally 



bedded above. Sugar Creek lime quarries, Cedar county, Iowa (No. 142). 



530. Oblique bedding in Leclaire limestone, half a mile south of Leclaire, Iowa. 



The soil at top of exposure is an ancient shell heap or kitchen-midden 

 (No. 145). 



531. Exposure of thin bedded Leclaire limestone, Leclaire, Iowa, showing 



effect of subaquatic erosion and subsequent deposition of similar limestone 

 in eroded trough (No. 146). 



