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“Bite-Size Bits of Local, National, and Global History”
Vantage in Kittitas County, Washington — The American West (Northwest)
 

Carving Out Basalt Layers

 
 
Carving Out Basalt Layers Marker image. Click for full size.
By Duane Hall, August 24, 2010
1. Carving Out Basalt Layers Marker
Inscription. When Ice Age floodwaters rushed across Quincy Basin and down the Columbia River, they gouged chunks of basalt from the scabland cliffs in front of you. During the last Ice Age, this area was repeatedly swept by floodwaters that tore away layer after layer of basalt.

Resisting Powerful Floodwaters
Some layers were more resistant than others. The interpretive center was built on a high, flood-swept basalt layer called the “Museum Flow.” The floods removed the other flows that once rested above it, eroding the basalt down to this more flood-resistant layer.

(Illustration Caption)
This illustration shows some of the basalt layers of the Vantage area. Floods removed up to 200 feet of basalt and sandstone from above the Museum Flow. These layers can still be seen in the nearby hills and in the cliffs across the river.

(Photo Caption)
This photos shows the area before being inundated by water behind Wanapum Dam in 1963. The old town of Vantage is in the foreground. Vantage is now located less than a mile south of here. The bridge was moved to span the Snake River at Lyons Ferry.
 
Erected by Washington State Parks.
 
Location. 46° 57.278′ N, 119° 59.269′ 
Previous Site of Town of Vantage image. Click for full size.
By Duane Hall, August 24, 2010
2. Previous Site of Town of Vantage
Area before being inundated by water behind Wanapum Dam in 1963
W. Marker is in Vantage, Washington, in Kittitas County. Marker can be reached from Ginkgo Avenue half a mile north of Vantage Highway. Touch for map. Marker is located at the interpretive center for the Ginkgo Petrified Forest State Park; a entrance fee may be required. Marker is in this post office area: Vantage WA 98950, United States of America.
 
Other nearby markers. At least 8 other markers are within 2 miles of this marker, measured as the crow flies. Here and Gone (here, next to this marker); A Living Landscape (a few steps from this marker); Explore Massive Floodscapes! (a few steps from this marker); In the Path of Cataclysmic Floods (a few steps from this marker); Buried by Enormous Lava Floods (within shouting distance of this marker); Welcome to Ginkgo Petrified Forest State Park (within shouting distance of this marker); Ginkgo Petrified Forest State Park (approx. 1.2 miles away); The Wanapums (approx. 1.2 miles away). Touch for a list and map of all markers in Vantage.
 
Also see . . .  Ginkgo Petrified Forest State Park - Wikipedia entry. (Submitted on May 2, 2015.)
 
Categories. Natural Features
 
Current Site of Town of Vantage image. Click for full size.
By Duane Hall, August 24, 2010
3. Current Site of Town of Vantage
The Museum Flow (the 'you are here' on the marker image) and the Ginkgo Petrified Forest interpretive center are in the middle right of the photograph
Basalt Layers Along the Columbia River image. Click for full size.
By Duane Hall, August 24, 2010
4. Basalt Layers Along the Columbia River
View to northeast from marker location
 
 
Credits. This page was last revised on June 16, 2016. This page originally submitted on May 2, 2015, by Duane Hall of Abilene, Texas. This page has been viewed 182 times since then and 30 times this year. Photos:   1, 2, 3, 4. submitted on May 2, 2015, by Duane Hall of Abilene, Texas.
 
Editor’s want-list for this marker. Photo of wide-view of marker and surrounding area • Can you help?
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