Theodore Roosevelt National Park
by Marty Fancy
Title
Theodore Roosevelt National Park
Artist
Marty Fancy
Medium
Photograph
Description
A typical formation in the Badslands of North Dakota in Theodore Roosevelt National Park.
Theodore Roosevelt National Park is a United States National Park comprising three geographically separated areas of badlands in western North Dakota. The park was named for U.S. President Theodore Roosevelt. The park covers 110 square miles of land in three sections: the North Unit, the South Unit, and the Elkhorn Ranch Unit.
Badlands are a type of dry terrain where softer sedimentary rocks and clay-rich soils have been extensively eroded by wind and water. They are characterized by steep slopes, minimal vegetation, lack of a substantial regolith, and high drainage density. They can resemble malpa a terrain of volcanic rock. Canyons, ravines, gullies, hoodoos and other such geological forms are common in badlands. They are often difficult to navigate by foot. Badlands often have a spectacular color display that alternates from dark black/blue coal stria to bright clays to red scoria.
The formation of badlands is a result of two aspects, deposition and erosion. The process of deposition describes the accumulation, over time, of layers of mineral material. Different environments such as seas, rivers, or tropical zones, deposit different sorts of clays, silts, and sand. For instance, the badlands formations in Badlands National Park, South Dakota, underwent a 47-million year period of deposition which spanned three major geologic periods (the Cretaceous Period, the Late Eocene, and the Oligocene Epochs), resulting in clear, distinct layers of sediment which serve as a dramatic display of the law of superposition. Once the deposited sediments have solidified, the sedimentary material becomes subject to erosion. It is sometimes erroneously taught that badlands erode at a steady rate of about 1 inch per year. In actuality, the precise processes by which the erosion responses take place vary depending on the precise interbedding of the sedimentary material.
Uploaded
July 23rd, 2014
Statistics
Viewed 139 Times - Last Visitor from New York, NY on 04/19/2024 at 3:27 AM
Embed
Share
Sales Sheet
Comments
There are no comments for Theodore Roosevelt National Park. Click here to post the first comment.