El Capitan, Yosemite National Park, California, USA
by Neale And Judith Clark
Title
El Capitan, Yosemite National Park, California, USA
Artist
Neale And Judith Clark
Medium
Photograph - Photography
Description
El Capitan - Yosemite national park El Capitan with the Merced river flowing through the Yosemite Valley Yosemite National Park California USA - the famous El Cap on a wonderful June day what more is there to say!!
El Capitan (Spanish: El Capitán; The Captain or The Chief), also known as El Cap, is a vertical rock formation in Yosemite National Park, located on the north side of Yosemite Valley, near its western end. The granite monolith is about 3,000 feet (914 m) from base to summit along its tallest face, and is a popular objective for rock climbers.
The formation was named "El Capitan" by the Mariposa Battalion when they explored the valley in 1851. El Capitan ("the captain", "the chief") was taken to be a loose Spanish translation of the local Native American name for the cliff, variously transcribed as "To-to-kon oo-lah" or "To-tock-ah-noo-lah" (Miwok language). It is unclear if the Native American name referred to a specific tribal chief or simply meant "the chief" or "rock chief".
El Capitan is composed almost entirely of a pale, coarse-grained granite emplaced approximately 100 MYA (million years ago). In addition to El Capitan, this granite forms most of the rock features of the western portions of Yosemite Valley. A separate intrusion of igneous rock, the Taft Granite, forms the uppermost portions of the cliff face.
A third igneous rock, diorite, is present as dark-veined intrusions through both kinds of granite, especially prominent in the area known as the North America Wall.
Along with most of the other rock formations of Yosemite Valley, El Capitan was carved by glacial action. Several periods of glaciation have occurred in the Sierra Nevada, but the Sherwin Glaciation, which lasted from approximately 1.3 MYA to 1 MYA, is considered to be responsible for the majority of the sculpting. The El Capitan Granite is relatively free of joints, and as a result the glacial ice did not erode the rock face as much as other, more jointed, rocks nearby. Nonetheless, as with most of the rock forming Yosemite's features, El Capitan's granite is under enormous internal tension brought on by the compression experienced prior to the erosion that brought it to the surface. These forces contribute to the creation of features such as the Texas Flake, a large block of granite slowly detaching from the main rock face about halfway up the side of the cliff
Alamy reference EHBAYD
Uploaded
January 7th, 2020
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