Tuff

Tuff

Tuff. NOTE: The photo is public domain. Please credit U.S. Forest Service when used.

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Uploaded on May 24, 2011

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Weathered Porphyritic Rhyolite

Weathered Porphyritic Rhyolite

Weathered porphyritic rhyolite. NOTE: The photo is public domain. Please credit U.S. Forest Service when used.

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Uploaded on May 24, 2011

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Rhyolite Dome

Rhyolite Dome

Rhyolite dome NOTE: The photo is public domain. Please credit U.S. Forest Service when used.

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Uploaded on May 24, 2011

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Rhyolite

Rhyolite

Rhyolite dome. NOTE: The photo is public domain. Please credit U.S. Forest Service when used.

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Uploaded on May 24, 2011

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Battleship Rock

Battleship Rock

Battleship Rock NOTE: The photo is public domain. Please credit U.S. Forest Service when used.

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Uploaded on May 24, 2011

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Flow

Flow

NOTE: The photo is public domain. Please credit U.S. Forest Service when used.

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Uploaded on May 24, 2011

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Basalt

Basalt

Basalt from the Caja del Rio Plateau in the Santa Fe National Forest. Basalt is fine-graned and contains...

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Uploaded on May 24, 2011

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Cinder Texture

Cinder Texture

NOTE: The photo is public domain. Please credit U.S. Forest Service when used.

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Uploaded on May 24, 2011

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Porphyritic Andesite

Porphyritic Andesite

NOTE: The photo is public domain. Please credit U.S. Forest Service when used.

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Uploaded on May 24, 2011

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Pumice and Obsidian Close

Pumice and Obsidian Close

Pumice and obsidian rocks. NOTE: The photo is public domain. Please credit U.S. Forest Service when used.

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Uploaded on May 24, 2011

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Granite Embudosm

Granite Embudosm

Granite boulder in the Sandia Mountains. The pink minerals are feldspar. The green streak is a vein...

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Uploaded on May 24, 2011

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Lizard On Granite

Lizard On Granite

Another granite boulder in the Sandias, with a lizard. To the left of the lizard, several quartz...

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Uploaded on May 24, 2011

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Red Shale

Red Shale

Red shale along the Miller Peak Trail. NOTE: The photo is public domain. Please credit U.S. Forest Service when used.

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Uploaded on May 24, 2011

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Sunspot Vista

Sunspot Vista

The gypsum of White Sands National Monument was depositied in a playa lake after being leached out of...

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Uploaded on May 24, 2011

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Low Angle Crossbeds

Low Angle Crossbeds

Low-angle cross-beds in sandstone along the Miller Peak Trail. NOTE: The photo is public domain. Please credit U.S. Forest Service when used.

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Uploaded on May 24, 2011

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Hermit Channel

Hermit Channel

River channel preserved in sandstone of the Hermit Foundation. NOTE: The photo is public domain. Please credit U.S. Forest Service when used.

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Uploaded on May 24, 2011

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El Paso Gap

El Paso Gap

The layering of the sedimentary rocks west of the Guadalupe Mountains results in a neat circular patter...

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Uploaded on May 24, 2011

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High Angle Crossbeds Coconino

High Angle Crossbeds Coconino

The high-angle cross-beds in the Coconino Sandstone are evidence of deposition in terrestrial sand...

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Uploaded on May 24, 2011

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