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The upward movement of the Yellowstone caldera floor between 2004 and 2008—almost 75 millimetres (3.0 in) each year—was more than three times greater than ever observed since such measurements began in 1923. [102] From 2004 to 2008, the land surface within the caldera moved upward as much as 8 inches (20 cm) at the White Lake GPS station.
Although the Valles caldera is not unusually large, it is relatively young (1.25 million years old) and unusually well preserved, [31] and it remains one of the best studied examples of a resurgent caldera. [6] The ash flow tuffs of the Valles caldera, such as the Bandelier Tuff, were among the first to be thoroughly characterized. [32]
(Click to zoom) See legend below This is the legend for the North American geological map above. Geologic map of North America. The geology of North America is a subject of regional geology and covers the North American continent, the third-largest in the world. Geologic units and processes are investigated on a large scale to reach a ...
Map of Long Valley Caldera Early winter in Long Valley, 2017. Long Valley Caldera is a depression in eastern California that is adjacent to Mammoth Mountain.The valley is one of the Earth's largest calderas, measuring about 20 mi (32 km) long (east-west), 11 mi (18 km) wide (north-south), and up to 3,000 ft (910 m) deep.
The Valles Caldera is the type location for resurgent caldera eruptions ... 2011 map of the Valles Caldera, ... for the Proterozoic growth of North America".
The Yellowstone Caldera has two resurgent domes formed by magma upwelling called Sour Creek and Mallard Lakes. [8] The magma chambers under the Yellowstone Caldera provides heat and energy for large hydrothermal systems. [8] [9] The Yellowstone Caldera has the greatest concentration of hydrothermal features in the world, and is an active system ...
Caldera is the type locality for a resurgent dome caldera, the formation of which was first developed by C.S. Ross, R.L. Smith, and R.A. Bailey during field work at Valles in the 1960s. [19] This type locality and associated studies have been used to studied other resurgent domes around the world, including Yellowstone Caldera.