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Volcanic calderas of Washington state, United States. Pages in category "Calderas of Washington (state)" The following 3 pages are in this category, out of 3 total.
Hannegan caldera is a 3.72 million year old volcanic collapse structure in the North Cascades of the U.S. state of Washington. [2] The caldera collapsed during two separate volcanic eruptions that produced as much as 140 km 3 of rhyolite ash.
About Wikipedia; Contact us; Contribute Help; ... Calderas of Washington (state) (3 P) Calderas of Wyoming (1 C, 2 P) Pages in category "Calderas of the United States"
The Kulshan caldera is a Pleistocene volcano in the North Cascades of Washington and one of the few calderas identified in the entire Cascade Range. [ 1 ] [ 2 ] It is the product of the Mount Baker volcanic field , which has a history stretching back to possibly 3.722 million years ago.
Although Mount St. Helens is in Skamania County, Washington, access routes to the mountain run through Cowlitz County to the west, and Lewis County to the north. State Route 504, locally known as the Spirit Lake Memorial Highway, connects with Interstate 5 at Exit 49, 34 miles (55 km) to the west of the mountain.
With an officially recognized [b] summit elevation of 14,410 ft (4,392 m) at the Columbia Crest, [1] [13] it is the highest mountain in the U.S. state of Washington, the most topographically prominent mountain in the contiguous United States, [2] and the tallest in the Cascade Volcanic Arc.
The term caldera comes from Spanish caldera, and Latin caldaria, meaning "cooking pot". [6] In some texts the English term cauldron is also used, [7] though in more recent work the term cauldron refers to a caldera that has been deeply eroded to expose the beds under the caldera floor. [6]
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