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Western Interior Seaway. The Western Interior Seaway (also called the Cretaceous Seaway, the Niobraran Sea, the North American Inland Sea, and the Western Interior Sea) was a large inland sea that split the continent of North America into two landmasses for 34 million years. The ancient sea, which existed from the early Late Cretaceous (100 Ma ...
Geography of New Mexico. With a total area of 121,590 square miles (314,900 km 2), [1] New Mexico is the fifth-largest state, after Alaska, Texas, California, and Montana. Its eastern border lies along 103°W longitude with the state of Oklahoma, and 2.2 miles (3.5 kilometres) west of 103°W longitude with Texas (due to a 19th-century surveying ...
A brief rise in sea level deposited the limestone of the San Andres Formation across much of New Mexico, making this the most extensive Paleozoic formation exposed in the state. The subsequent retreat of the sea resulted in deposition of large deposits of gypsum , potash and salt of the Castile and Salado Formations in the Delaware Basin.
A submergent landform: the drowned river valley (ria) of Georges River in the greater Sydney area, Australia. Submergent coastlines or drowned coastlines are stretches along the coast that have been inundated by the sea by a relative rise in sea levels from either isostacy or eustacy. Submergent coastline are the opposite of emergent coastlines ...
Geologists study 5,600-year-old submerged bridge; new details of life emerge from Mallorca, Spain. ... "Both indicators suggest that these features formed during a period of sea-level still [and ...
This is a list of places on land below mean sea level. Places artificially created such as tunnels, mines, basements, and dug holes, or places under water, or existing temporarily as a result of ebbing of sea tide etc., are not included. Places where seawater and rainwater is pumped away are included.
The city's geographic center is at an elevation of 4,281 feet (1,305 m) above sea level. [15] U.S. Routes 60, 70, and 84 pass through the city. US 60 and 84 lead west 60 miles (97 km) to Fort Sumner, while US 70 leads southwest 19 miles (31 km) to Portales and 110 miles (180 km) to Roswell.
Over four–fifths of New Mexico is higher than 4,000 feet (1,200 meters) above sea level. The average elevation ranges from up to 8,000 feet (2,400 meters) above sea level in the northwest, to less than 4,000 feet in the southeast. [87]