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The Nevadan orogeny occurred along the western margin of North America during the Late Jurassic to Early Cretaceous approximately 155 Ma to 145 Ma. [1] Throughout the duration of this orogeny there were at least two different kinds of orogenic processes occurring. During the early stages of orogenesis an "Andean type" continental magmatic arc ...
The Sevier Fold and Thrust Belt extends from southern California near the Mexican border to Canada. [1] Basin and Range faults cut the older Sevier thrust faults. [4] The Sevier orogeny was preceded by several other mountain-building events including the Nevadan orogeny, the Sonoman orogeny, and the Antler orogeny, and partially overlapped in time and space with the Laramide orogeny.
Mauritanide Orogeny – Ancient orogen parallel to the west coast of Africa from Morocco to Guinea-Bissau. Mozambique Orogeny – Band in the Earth's crust from East Antarctica through East Africa up to the Arabian-Nubian Shield. Zambezian Orogeny – Area of mountain building now in southern Zambia and northern Zimbabwe.
Geology of Nevada. 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. Intense volcanism, the horst and graben landscape of the Basin and Range ...
Antler orogeny. The Antler orogeny was a tectonic event that began in the early Late Devonian with widespread effects continuing into the Mississippian and early Pennsylvanian. [ 1][ 2][ 3] Most of the evidence for this event is in Nevada but the limits of its reach are unknown. A great volume of conglomeratic deposits of mainly Mississippian ...
The Sonoma orogeny was a period of mountain building in western North America. The exact age and structure of the Sonoma orogeny is controversial. [1] [2] [3] The orogeny is generally thought to have occurred during the Permian / Triassic transition, around 250 million years ago, following the Late Devonian Antler orogeny.
The Laramide orogeny was caused by subduction of a plate at a shallow angle. The orogeny is commonly attributed to events off the west coast of North America, where the Kula and Farallon Plates were sliding under the North American plate. Most hypotheses propose that oceanic crust was undergoing flat-slab subduction, that is, subduction at a ...
1984 (8th Session) Yosemite National Park (/ joʊˈsɛmɪti / yoh-SEM-ih-tee[5]) is a national park of the United States in California. [6][7] It is bordered on the southeast by Sierra National Forest and on the northwest by Stanislaus National Forest. The park is managed by the National Park Service and covers 759,620 acres (1,187 sq mi; 3,074 ...