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Coastal, ocean-going communities of Native Americans have existed in the area since prehistoric times, with evidence of settlements dating back to at least ca. 8,000 B.C. [1] [3] [4] [7] During the Last Glacial Period, such communities existed on land that became submerged by rising sea levels [7] as the glaciers retreated.
On January 19, 2021, NOAA issued the Final Instruction for expansion of Flower Garden Banks National Marine Sanctuary. This action protects 14 additional reefs and banks, slightly adjusts the boundaries of the sanctuary's original three banks and expands the sanctuary from 56 square miles (145 km 2) to a total of 160 square miles (415 km 2).
The Submerged Lands Act of 1953 [2] is a U.S. federal law that recognized the title of the states to submerged navigable lands within their boundaries at the time they entered the Union. They include navigable waterways, such as rivers , as well as marine waters within the state's boundaries, generally three geographical miles (almost exactly 3 ...
The Blue Hole is a clear blue body of water with a constant 62 °F (17 °C) temperature and constant inflow of 3,000 US gallons per minute (11 m 3 /min; 2,500 imp gal/min), enough to cycle out the water every six hours. While the surface is only 80 feet (24 m) in diameter, it expands to a diameter of 130 feet (40 m) at the bottom.
The area was considered a productive fishing area, but not much was discovered about its marine life until an expedition in 1977. [6] NOAA carried out a detailed multibeam echosounder survey of the area in 1985 from aboard the R/V Davidson. [7] The expedition was led by a non-profit research group, Cordell Expeditions. [7]
Surface elevation. 4,414 ft (1,345 m) Elephant Butte Reservoir is a reservoir on the southern part of the Rio Grande in the U.S. state of New Mexico, 5 miles (8.0 km) north of Truth or Consequences. The reservoir is the 84th largest man-made lake in the United States and the largest in New Mexico by total surface area and peak volume.
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.
Website. Valles Caldera National Preserve. The Valles Caldera (or Jemez Caldera) is a 13.7-mile (22.0 km) wide volcanic caldera in the Jemez Mountains of northern New Mexico. [1] Hot springs, streams, fumaroles, natural gas seeps, and volcanic domes dot the caldera landscape. [4]