Tuff Schist

sedimentarymydear:

Cotopaxi, Ecuador

sedimentarymydear:

Patagonia, Argentina

(Source: reddit.com)

geologise:

Mount Fuji in Winter by Jukka Vuokko on Flickr

geologise:

Sandstone Cross-bedding by ZionNPS on Flickr

The cross-bedding found in the Navajo Sandstone is the result of sand being moved by wind. As the sand dunes, which were once found in this ancient desert, were blown by prevailing winds, the sand tumbled down and collected on the dune face. As wind patterns would change, so would the direction of the bedding. With more layers accumulating with this constant dune migration, the deposits were continuously buried. In time, these deposits were solidified in place by mineral rich ground water. NPS Photo

ikenbot:

White Dome Geyser & Aurora

The Aurora extended to southern Montana and into Wyoming just before and after midnight on Sept 30/Oct 01. The rising full moon spotlighted the erupting White Dome Geyser in Yellowstone National Park. — Robert Howell

opticoverload:

Rapture of the Deep

arizonanature:

National Parks: Day Ten

Sunset Crater Volcano National Monument

Sunset Crater Volcano! Roughly 900 years ago, the eruption of this volcano reshaped the surrounding landscape, forever changing the lives of people, plants and animals. Hike the trail through the lava flow and cinders and you’ll likely discover colorful, ruggedly dramatic geological features coexisting with twisted Ponderosa Pines and an amazing array of wildlife.

thehornygeologist:

Rio Grande River

A truly grand river.

opticoverload:

Monument Valley, Utah

opticoverload:

The Giant’s Causeway (known in Irish as Clochán an Aifir or Clochán na bhFómharach) is an area of about 40,000 interlocking basalt columns, the result of an ancient volcanic eruption. It is located in County Antrim on the northeast coast of Northern Ireland