Newberry is: the Loner Volcano
Posted by: 
Volcanoguy
N 43° 41.375 W 121° 15.276
10T E 640664 N 4838876
Geologic history of Newberry Volcano.
Waymark Code: WM88M
Location: Oregon, United States
Date Posted: 03/02/2006
Views: 17
This sign is located near the summit of Paulina Peak on Newberry Volcano. The Peak can be reached via a 4-mile graveled single lane road with turnouts. From the summit the Cascade Range is visible from Mt. Adams in Washington to Mt. Shasta in California. In addition there is a spectacular overview of Newberry Caldera to the northeast.
Marker Name: Newberry is: the Loner Volcano (Caution: Prone to Violent Outbursts)
Marker Text: This volcano erupted out in the middle of nowhere. The pointy peaks of the Cascade Mountain Range to the west all line up and the volcanoes are much smaller. So why is Newberry such a big loner? Well (obviously)...it just has too many faults?
Geologists theorize that Newberry lies at the nexus of several overlapping fault zones. This means Newberry emerged from the center of overlapping zones of weakness in the earth’s crust. Magma rose to the surface using faults as conduits of pipelines. The Cascades are subduction zone volcanoes (see diagram). Newberry’s volcanic material comes from the same place but Newberry is not a member of the Cascades clan. In other words, they shop at the same stores but are not related.
And Newberry is not a single volcano - it’s a crazy quilt pile of hundreds of smaller volcanoes that erupted in the same general area for about one million years. On the drive down look for the cinder cone bumps on the flanks of the volcano - each bump is a separate, single-use volcano. And don’t worry - there are no eruptions scheduled for today.
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