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  AZ Grand Canyon
  USA

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Added in: december 2012
Last Modified in: december 2012


Geology site description:

The Grand Canyon is perhaps the best example of erosion by rivers in the world. The very broad and deep gorge carved into the Colorado Plateau. The gorge is 435 kilometers long and 29 kilometers wide.

Due to tectonic uplift of the plateau, the Colorado River was cutting into it. Currently, this is still going on at a rate of almost 2 cm per century. The gap is about 1600 meters deep. Geological research has shown that the forming of the canyon started  already some 17 million years ago. Due to differences in elevation and drainage in the rate of erosion in the geological history varied significantly.

In the gorge is a huge section of the stratigraphy is visible. The largest part of stratigraphy are several layers of sandstone and limestone from the Paleozoic. At the bottom of the canyon layers from the Precambrian are exposed which are 1.5 billion years old. Between these two part an unconformity is present which represents a time gap of one billion years.



Sign at the entrance to the Grand Canyon National Park. Photo taken February 4, 2003.
Added by: almach on 20-10-2015


View from Mather Point. Notice the people on the left side of the photo for size reference. Photo taken February 4, 2003
Added by: almach on 20-10-2015


View from Mather Point. Photo taken February 4, 2003
Added by: almach on 20-10-2015


Close up of part of the previous photo, view from Mather Point. Photo taken February 4, 2003
Added by: almach on 20-10-2015


View from Mather Point. Photo taken February 4, 2003
Added by: almach on 20-10-2015


View from Yavapai Point. Photo taken February 4, 2003
Added by: almach on 20-10-2015


Close up of a mule deer, they were all over the place!. Photo taken February 4, 2003
Added by: almach on 20-10-2015


View from Maricopa Point. Photo taken February 4, 2003
Added by: almach on 20-10-2015


Looking down, one can see the switchback trail to the bottom of the canyon from Maricopa Point. Photo taken February 4, 2003
Added by: almach on 20-10-2015


View from Maricopa Point. Photo taken February 4, 2003
Added by: almach on 20-10-2015


View from Maricopa Point. Photo taken February 4, 2003.
Added by: almach on 20-10-2015


Wind blown tree at Maricopa Point. Photo taken February 4, 2003.
Added by: almach on 20-10-2015


View from Maricopa Point. Photo taken February 4, 2003.
Added by: almach on 20-10-2015


Close up view from Maricopa Point. Photo taken February 4, 2003.
Added by: almach on 20-10-2015


View from Hopi Point. Photo taken February 4, 2003.
Added by: almach on 20-10-2015


View from Hopi Point. Photo taken February 4, 2003.
Added by: almach on 20-10-2015


View from Hopi Point. Photo taken February 4, 2003.
Added by: almach on 20-10-2015


Sign at Hopi Point. Photo taken February 4, 2003.
Added by: almach on 20-10-2015


View from Mohave Point. Photo taken February 4, 2003.
Added by: almach on 20-10-2015


View from Mohave Point. Photo taken February 4, 2003.
Added by: almach on 20-10-2015


View from Pima Point. Photo taken February 4, 2003.
Added by: almach on 20-10-2015


View from the Hermit\'s Rest. Do you spot the scrub jay? Photo taken February 4, 2003.
Added by: almach on 20-10-2015


Path from Powell Point. Photo taken February 4, 2003.
Added by: almach on 20-10-2015


View from Powell Point. Photo taken February 4, 2003.
Added by: almach on 20-10-2015


View from Powell Point. Photo taken February 4, 2003.
Added by: almach on 20-10-2015

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Directions:

The Grand Canyon is located in the state of Arizona and can be accessed both from the North Rim and the South Rim. The south side is the most popular. On both sides are many viewpoints.

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