A short hike to the top of the Devil’s Postpile on Mammoth Mountain, in the Sierra Nevada’s of California, reveals the tile-like pattern shown above. Slow cooling of basalt, from the top down, is responsible for these nearly 120 degree shrinkage cracks. The top of the “posts” were scoured by glaciers during the last glaciation. Visible on the tiles faces are glacial striations, which show the direction of motion of the glacier. A water bottle was placed for scale purposes. Photo taken in July 2008. Credit: Nel Graham. (via EPOD)
Pop-upView Separately

A short hike to the top of the Devil’s Postpile on Mammoth Mountain, in the Sierra Nevada’s of California, reveals the tile-like pattern shown above. Slow cooling of basalt, from the top down, is responsible for these nearly 120 degree shrinkage cracks. The top of the “posts” were scoured by glaciers during the last glaciation. Visible on the tiles faces are glacial striations, which show the direction of motion of the glacier. A water bottle was placed for scale purposes. Photo taken in July 2008. Credit: Nel Graham. (via EPOD)

Fuente: epod.usra.edu

42 Notes/ Hide

  1. dappercontessa ha reblogueado esto desde migeo
  2. thenightscall ha reblogueado esto desde migeo
  3. somestrangeseahorse ha reblogueado esto desde migeo
  4. lafrondeuse ha reblogueado esto desde migeo
  5. places-2-go ha reblogueado esto desde migeo
  6. hotelfoxtrot ha reblogueado esto desde thedistrict2o2
  7. blackrosesdubusandstars ha reblogueado esto desde migeo
  8. migeo ha publicado esto