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The Foothills Erratics Train is a 580 miles (930 km) long, narrow (0.62 miles (1.00 km) to 13.7 miles (22.0 km) wide), linear scatter of thousands of typically angular boulders of distinctive quartzite and pebbly quartzite that lie on the surface of a generally north-south strip of the Canadian Prairies.
The valley has 4 separate Wildlife Management Areas ("Railroad Valley WMA"), and valley communities include Currant, Crows Nest, Green Springs, Lockes, and Nyala. The valley is the ancestral home of the Tsaidüka band of Western Shoshone , who are now enrolled in the Duckwater Shoshone Tribe of the Duckwater Reservation .
The line connects Bakersfield and the San Joaquin Valley to Mojave in the Mojave Desert. Rising at a steady two-percent grade, the track gains 77 feet (23 m) in elevation and makes a 1,210-foot-diameter (370 m) circle. [1] [2] Any train that is more than 3,800 feet (1,200 m) long—about 56 boxcars—passes over itself going around the loop. At ...
When this phenomenon occurs in a valley, it is called a valley train. When the deposition is in an estuary, the sediments are known as bay mud. Outwash plains and valley trains are usually accompanied by basins known as "kettles". These are small lakes formed when large ice blocks that are trapped in alluvium melt and produce water-filled ...
Valley of Fire near Las Vegas. The geology of Nevada began to form in the Proterozoic at the western margin of North America. Terranes accreted to the continent as a marine environment dominated the area through the Paleozoic and Mesozoic periods.
This is consistent with Sikeston Ridge being a remnant of the late Wisconsin Valley Train. The fluvial deposits on Sikeston Ridge and more surfaces downstream match up and have been interpreted as a part of the same late Wisconsin full glacial and early late glacial valley train course. The relative ages of the terraces in the area were ...
Strike valley: A valley typically developed parallel to a cuesta from more readily eroded strata. Structural valley: A valley formed by geologic events such as drop faults or the rise of highlands. [12] Similar geographical features such as gullies, chines, and kloofs, are not usually referred to as valleys.
The Northern Pleistocene Valley Trains ecoregion is a flat to irregular alluvial plain composed of sandy to gravelly glacial outwash overlain by alluvium; sand sheets, widespread in the St. Francis Lowlands (73c), are absent. The Pleistocene outwash deposits of Ecoregion 73b are usually coarser and better drained than the alluvial deposits of ...