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Photographer's Note

Yosemite's dominant rock is granite, a plutonic igneous rock. Magma that cools and solidifies within the Earth's crust forms "plutonic rock", named for Pluto the Roman god of the underworld. The slow cooling of plutonic magma fosters the growth of individual crystals visible to the naked eye. The main minerals are quartz and feldspar.

Darker granite inclusions - "diorite" is mostly plagioclase and other dark minerals, with little quartz and feldspar.

On the east side of El Capitan is the famous diorite dike in darker colors resembling a map of the North American continent, as seen in my photo.

Miguel82, EstudioChispa has marked this note useful

Photo Information
  • Copyright: Ray Anderson (photoray) Gold Star Critiquer/Gold Note Writer [C: 982 W: 1 N: 2463] (10097)
  • Genre: Places
  • Medium: Color
  • Date Taken: 2000-05-00
  • Categories: Nature
  • Photo Version: Original Version
  • Date Submitted: 2014-01-21 14:25
Viewed: 464
Points: 12
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Additional Photos by Ray Anderson (photoray) Gold Star Critiquer/Gold Note Writer [C: 982 W: 1 N: 2463] (10097)
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