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Geologic Map of West Virginia. West Virginia's geologic history stretches back into the Precambrian, and includes several periods of mountain building and erosion. At times, much of what is now West Virginia was covered by swamps, marshlands, and shallow seas, accounting for the wide variety of sedimentary rocks found in the state, as well as its wealth of coal and natural gas deposits.
Alluvial fans vary greatly in size, from only a few meters across at the base to as much as 150 kilometers across, with a slope of 1.5 to 25 degrees. [1] Some giant alluvial fans have areas of almost 20,000 square kilometres (7,700 sq mi). [3]
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This list of the prehistoric life of West Virginia contains the various prehistoric life-forms whose fossilized remains have been reported from within the US state of ...
There are listings in every one of West Virginia's 55 counties. Listings range from prehistoric sites such as Grave Creek Mound , to Cool Spring Farm in the state's eastern panhandle, one of the state's first homesteads, to relatively newer, yet still historical, residences and commercial districts.
An alluvial fan could have been deposited and formed outside of a mountain range, however, thrusting of the mountain belt could cause the alluvial fan to become broken up by the new mountain forming. Thus, the alluvial fan would be split with the fan on either side of the new mountain range development and could change the steepness of the fan. [1]
This list of the Paleozoic life of West Virginia contains the various prehistoric life-forms whose fossilized remains have been reported from within the US state of West Virginia and are between 538.8 and 252.17 million years of age.
Neighboring south the Incipient Intermontane (CE 800–1200) followed by the Full Montane (1200~1625 CE) are found in the Ridge and Valley provence in western Virginia (Blue Ridge) and SW West Virginia border area to upper border area of W North Carolina. [60] Wilhelm culture (Late Middle Woodland, 1–500 CE) appeared in the Northern Panhandle.