Cretaceous Deposits of the Sioux Valley, 1895

(1895) Cretaceous Deposits of the Sioux Valley, 1895. University of Iowa


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The Cretaceous formations of the upper Missouri region have long attracted attention. As early as 1839 the rocks at the mouth of the Sioux river, near the site of the city of the same name, were examined by the French explorer Nicollet. Since that time the locality has been visited by a number of workers and by them has been made the starting point for all geological investigations in the region. While the knowledge regarding the beds along the Missouri river has become quite complete, information pertaining to exposures along the various tributaries has been almost wholly neglected. Along the Sioux River, which forms the northern third of the western boundary of Iowa, the formations have received no notice except that which has been merely incidental to the examinations of more western districts.

Item Type: Departmental Report
Keywords: Cretaceous Deposits, University of Iowa, sciences, Sioux Valley,
Subjects: History and culture
History and culture > History of Iowa
Natural resources and environment
Natural resources and environment > Earth sciences
Natural resources and environment > Ecology
ID Code: 47457
Deposited By: Margaret Barr
Deposited On: 16 Jan 2024 22:05
Last Modified: 16 Jan 2024 22:05