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The Gran Desierto sand sheets and dunes are located atop deltaic deposits of the Pleistocene Colorado River. The lower Colorado River was captured by the Gulf of California 1.2 million years before present. [9] This event places an upper bound on the age of the Gran Desierto with the Colorado's major clastic sediment sources.
El Pinacate and Gran Desierto de Altar Biosphere Reserve (Spanish: Reserva de la Biosfera El Pinacate y Gran Desierto de Altar) is a biosphere reserve and UNESCO World Heritage Site [1] managed by the federal government of Mexico, specifically by Secretariat of the Environment and Natural Resources, in collaboration with the state governments of Sonora and the Tohono O'odham.
The Pinacate Peaks (Sierra Pinacate, O'odham: Cuk Doʼag) are a group of volcanic peaks and cinder cones located mostly in the Mexican state of Sonora along the international border adjacent to the U.S. state of Arizona, surrounded by the vast sand dune field of the Gran Desierto de Altar, at the desert's southeast. [1]
Within the southern Sonoran Desert in Mexico is found the Gran Desierto de Altar, with the El Pinacate y Gran Desierto de Altar Biosphere Reserve, encompassing 2,000 square kilometres (770 sq mi) of desert and mountainous regions. [7] The biosphere reserve includes the only active erg dune region in North America.
Alto Golfo de California Biosphere Reserve is a UNESCO Biosphere Reserve located in the state of Sonora in extreme northwestern Mexico. Thee 1,652,110 hectares (6,378.8 sq mi) reserve comprises the El Pinacate y Gran Desierto reserve and the Bahia Adair on the Gulf of California border. Geological volcanic formations with craters, dunes, oasis ...
The Algodones Dunes is a large sand dune field, or erg, located in the southeastern portion of the U.S. state of California, near the border with Arizona and the Mexican state of Baja California. The field is approximately 45 miles (72 km) long by 6 miles (9.7 km) wide and extends along a northwest-southeast line that correlates to the ...
The city of Puerto Peñasco (Rocky Point) is found in the northwest of the Mexican state of Sonora, a state that is located directly to the south of the U.S. state of Arizona. It is located on the eastern coast of the Gulf of California approximately 60 miles south of the Arizonan border, only about a four-hour drive from Phoenix or Tucson . [ 17 ]
The southern end of the range extends approximately one mile into the northwestern Mexican state of Sonora on the northern perimeter of the Gran Desierto de Altar. The range is about 22 mi in length and about 4 mi wide at its widest point.