Rock With Wings
by Greni Graph
Title
Rock With Wings
Artist
Greni Graph
Medium
Photograph - Photography
Description
#201504079882--The Navajo name for the peak, Tse' Bitʼaʼi', "rock with wings" or "winged rock", refers to the legend of the great bird that brought the Navajo from the north to their present lands. The name "Shiprock" or Shiprock Peak or Ship Rock derives from the peak's resemblance to an enormous 19th-century clipper ship. Anglos first called the peak "The Needle", a name given to the topmost pinnacle by Captain J. F. McComb in 1860. United States Geological Survey maps indicate that the name "Ship Rock" dates from the 1870s. Shiprock is composed of fractured volcanic breccia and black dikes of igneous rock called minette. It is the erosional remnant of the throat of a volcano, and the volcanic breccia formed in a diatreme. The exposed rock probably was originally formed 2,500-3000 feet (750-1,000 meters) below the Earth's surface, but it was exposed after millions of years of erosion. Wall-like sheets of minette, known as dikes, radiate away from the central formation. Radiometric age determinations of the minette establish that these volcanic rocks solidified about 27 million years ago. Shiprock and the surrounding land have religious and historical significance to the Navajo people.
Uploaded
August 29th, 2015
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