Explosive Beginnings
Posted by: Groundspeak Premium Member Volcanoguy
N 44° 22.025 W 121° 08.264
10T E 648382 N 4914331
Sign about the Geological Story of Smith Rock
Waymark Code: WMKQD
Location: Oregon, United States
Date Posted: 08/10/2006
Published By:Groundspeak Premium Member silverquill
Views: 23

Sign along trail down to Crooked River.

Marker Name: Explosive Beginnings - The Geological Story of Smith Rock
Marker Text: Smith Rock State Park presents an awesome demonstration of the power and diversity of volcanic activity. The canyon’s landscapes were created by two very different volcanic events -- explosions of volcanic ash and the quiet flow of fluid basalt.

A major volcanic eruption began the formation of Smith Rock. Ash a half-mile thick settled over the area, eventually hardening to become rock known as Smith Rock tuff. Wind and water erosion altered the tuff leaving the spectacular spires in front of you.

Later, fluid basalt flowing from other volcanic eruptions eventually pushed the Crooked River up to the base of Smith Rock, creating another type of landscape.

Historic Topic: Geological

Group Responsible for placement: State of Oregon

Marker Type: Trail

Region: Central Oregon

County: Deschutes

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

Web link to additional information: Not listed

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Volcanoguy visited Explosive Beginnings 08/11/2006 Volcanoguy visited it

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