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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]
This large arid region of 190,000 sq mi (490,000 km 2) includes: deserts, such as the Great Basin Desert and Sonoran Desert; and the non-desert arid region areas (with greater than 10 inches (250 mm) annual precipitation) in the Great Basin arid region, Colorado Plateau, Mexican Plateau, and others.
El Pinacate y 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 [4] It is in the Sonoran Desert in the eastern part Gran Desierto de Altar, just south of the border with Arizona, United States and north of the city of Puerto Peñasco.
El Elegante (Spanish for elegant one) is a maar (a type of volcanic crater) located in the Gran Desierto de Altar in the Sonoran Desert, Mexico. At 250 metres (820 ft) deep and 1.5 kilometres (0.93 mi) across, it is the largest in the volcanic complex of Pinacate Peaks .
The Great Basin Desert is part of the Great Basin between the Sierra Nevada and the Wasatch Range in the western United States.The desert is a geographical region that largely overlaps the Great Basin shrub steppe defined by the World Wildlife Fund, and the Central Basin and Range ecoregion defined by the U.S. Environmental Protection Agency and United States Geological Survey.
It is considered to be part of the Lower Colorado Valley region of the Sonoran Desert. It lies in a north–south direction to the east of the Cabeza Prieta Mountains and almost entirely in the Barry M. Goldwater Air Force Range. The Tule Desert also lies on the northern border of the Gran Desierto de Altar of Sonora, Mexico.