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The map of North America with the Western Interior Seaway during the Campanian. The Western Interior Seaway (also called the Cretaceous Seaway, the Niobraran Sea, the North American Inland Sea, the Western Interior Sea and sometimes nicknamed "Hell's Aquarium") was a large inland sea that split the continent of North America into two landmasses for 34 million years.
During the early Paleozoic, southern and western New Mexico were submerged by a warm shallow sea that would come to be home to creatures including brachiopods, bryozoans, cartilaginous fishes, corals, graptolites, nautiloids, placoderms, and trilobites. During the Ordovician the state was home to algal reefs up to 300 feet high.
Bandera Volcano Ice Cave, also known as Zuni Ice Cave, is a lava tube cave in New Mexico with an internal temperature significantly less than above-ground summertime ambient temperature; it contains perennial ice. [1] The inside temperatures can fluctuate between −1 and 10 °C (31 and 50 °F). Some areas of the ice cave never reach above ...
Clovis is located in the New Mexico portion of the Llano Estacado, in the eastern part of the state. A largely agricultural community, closely bordering Texas , it is noted for its role in early rock music history and for nearby Cannon Air Force Base , current home to the 27th Special Operations Wing which is also known as "The Steadfast Line ...
Up to half of the continent's modern surface area may have been submerged by this sea. [72] This is called the Western Interior Seaway. [73] It covered the majority of states like Texas, New Mexico, Oklahoma, Colorado, Kansas, Nebraska, the Dakotas, and Wyoming. [74] The seafloor was smooth and probably never submerged by more than 600 feet of ...
Mid-ocean ridge cross-section (cut-away view) A mid-ocean ridge (MOR) is a seafloor mountain system formed by plate tectonics. It typically has a depth of about 2,600 meters (8,500 ft) and rises about 2,000 meters (6,600 ft) above the deepest portion of an ocean basin. This feature is where seafloor spreading takes place along a divergent plate ...
To estimate ice area, scientists calculate the percentage of sea ice in each pixel, multiply by the pixel area, and total the amounts. Scientists set a threshold percentage to estimate ice extent, and count every pixel meeting or exceeding that threshold as "ice-covered." The common threshold is 15 %.
The geologic history of the state began with its assembly during the Yavapai and Mazatzal orogenies 1750 to 1650 million years ago (Mya). This was followed by 200 million years of tectonic quiescence that ended in the Picuris orogeny. This event transformed the New Mexico crust into mature continental crust.