Saturday, August 1, 2009

Newberry Volcano caldera...

as viewed from the summit of Paulina Peak (7,969 ft/2,429 m elevation) lies in south-central Oregon and within Newberry Volcano National Monument (click to enlarge.)

The rim of the Newberry caldera forms the surrounding skyline and it contains East Lake (distant right) and Paulina Lake (left) with the Central Pumice Cone separating the two water bodies. The very obvious Big Obsidian Flow is approximately 1,300 years old and consists of volcanic glass and pumice, the product of a very "dry" rhyolitic lava flow.

No comments:

Post a Comment