Cascade Range
Posted by: Groundspeak Premium Member Volcanoguy
N 43° 55.080 W 121° 21.437
10T E 631885 N 4864076
A geologic history sign about the geology of the Cascade Range.
Waymark Code: WMN3N7
Location: Oregon, United States
Date Posted: 12/20/2014
Published By:Groundspeak Premium Member silverquill
Views: 1

Sign is located in the parking area on the summit of Lava Butte.


Marker Name: Cascade Range
Marker Text: The Cascade Range is an arc of volcanoes that extends for 775 from Lassen Peak in northern California to Meager Mountain in Canada. Although best known for the 30 prominent snow capped peaks, the range contains more than 3,400 volcanoes, including the more than 450 volcanic vents on the flanks of Newberry.

The Juan de Fuca plate plate plunges under the North American plate in the subduction zone off of the Oregon coast. This creates heat and pressure which generates the magma that supplies the eruptions of the Cascade Range.

Historic Topic: Geological

Group Responsible for placement: Forest Service

Marker Type: Roadside

Region: Central Oregon

County: Deschutes

State of Oregon Historical Marker "Beaver Board": Not listed

Web link to additional information: Not listed

Visit Instructions:

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Recent Visits/Logs:
Date Logged Log User Rating  
Volcanoguy visited Cascade Range 05/13/2014 Volcanoguy visited it