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Volcanos That Erupt

Published on Nov 18, 2015

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PRESENTATION OUTLINE

1.

VOLCANOS

BY:DAVID ROBINSON
Photo by NASA Goddard Photo and Video
2.

ANCIENT LAND SURFACE

  • Magma that remains below the surface will later become intrusive igneous rock.
Photo by Karlbert
3.

PRSENT-DAY LAND SURFACE

  • Surface rock has worn away to reveal some of the intrusive rock.
Photo by aka_lusi
4.

INTRUSIVE ROCK FORMATIONS

  • Ship rock actually formed about one kilometer below the surface of earth 30 million years ago.
  • It is all that remains of magma that once fed a volcano.
Photo by Rich Anderson
5.

EXTRUSIVE ROCK FORMATIONS

  • When magma makes its way to earth's surface through a volcano or crack, the lava may erupt in different ways.
Photo by acodring
6.

VOLCANOS THAT ERUPT

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Photo by Crater Lake Institute

David Robinson