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The Dakota Hogback is a long hogback ridge at the eastern fringe of the Rocky Mountains that extends north-south from southern Wyoming through Colorado and into northern New Mexico in the United States. The ridge is prominently visible as the first line of foothills along the edge of the Great Plains. It is generally faulted along its western ...
In geology and geomorphology, a hogback or hog's back is a long, narrow ridge or a series of hills with a narrow crest and steep slopes of nearly equal inclination on both flanks. Typically, the term is restricted to a ridge created by the differential erosion of outcropping , steeply dipping (greater than 30–40°), homoclinal , and typically ...
Hogback (elevation 6,175 feet (1,882 m)) – The ridge is part of the Dakota Hogback, paralleling the front range of the Rocky Mountains. The term hogback is a reference to a similarity to the back of an Arkansas razorback hog. A harder layer of resistant rock forms the ‘backbone’ or ‘hogback’. Here, it is Dakota sandstone. Softer ...
U.S. Geological Survey Professional Paper 274-B:15–49. : Defines the Lytle and South Platte formations of the Dakota Hogback as regional members of the Dakota Group introduced by Lee (1923). Paul C. Franks (1979). "Paralic to Fluvial Record of an Early Cretaceous Marine Transgression--Longford Member, Kiowa Formation, North-Central Kansas".
The Dakota hogback exposes Dakota Sandstone overlying and protecting the Morrison Formation beneath and to the west. Between Golden and Morrison, the Dakota hogback is called Dinosaur Ridge and is the site of a dinosaur trackway and dinosaur fossils exposed in the outcrop that are part of a Colorado State Natural Area and Geological Points of ...
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However, by 1878, C. A. White restricted the Colorado Group to the Benton and Niobrara, which are the formations found within the flatirons and secondary hogbacks on the east flank of the Dakota Hogback. [2] [8] [9] [4] During the last decade of the 19th Century, Cretaceous rocks in Colorado and western Kansas were a focus of considerable study.
The fossil was collected in 2015 by the North Dakota Geological Survey, a state agency dedicated to geology and public education about minerals and fossils. In fact, Zietlow said, NDGS 10838 was ...