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The Vishnu Complex or Vishnu Metamorphic Complex is the basement metamorphic Paleoproterozoic schist and gneiss rock unit of the Grand Canyon of Arizona. It consists of two major units of rock, the dark-colored, fine-grained Vishnu Schist, metamorphosed Paleoproterozoic sedimentary rocks, that have been intruded by the second unit, a pink-colored gneiss that began as the Zoroaster Plutonic Complex.

These complexes were named by CD Walcott in 1883. Scientists often use deity names to describe things. It is not intended to offend anyone.

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11y ago

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