Old Meets New
Posted by: Groundspeak Premium Member Volcanoguy
N 44° 20.634 W 121° 59.985
10T E 579729 N 4910556
Sign about the Cascades.
Waymark Code: WM4Z0F
Location: Oregon, United States
Date Posted: 10/15/2008
Published By:Groundspeak Premium Member TheBeanTeam
Views: 19

This sign is located at the start of the trail to the Koosah Fall viewpoint.

Marker Name: Old Meets New
Marker Text: This place is where old meets new. Across the river, the western Cascades began errupting into being 40 million years ago. The oldest rocks on the Willamette National Forest are found here. Lava flows that Sahalie & Koosah pour over today, however, are geologic babies at 3,000 years BP (before present).
Each layer is a different mountain-building flow. Dissolved minerals and gases vary with each eruption, bestowing each with unique, distinctive attributes. As you stand here, notice the lack of holes (less dissolved gas present) in the older rocks, and the sleek lines of water caressed stones.

Historic Topic: Geological

Group Responsible for placement: Forest Service

Marker Type: Roadside

Region: Willamette Valley

County: Linn

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

Web link to additional information: Not listed

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Recent Visits/Logs:
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Volcanoguy visited Old Meets New 10/16/2008 Volcanoguy visited it

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