Vantage in Kittitas County, Washington — The American West (Northwest)
Buried by Enormous Lava Floods
In all, more than 300 individual lava flows inundated parts of the Columbia Basin. One of these, called the Gingko flow, buried ancient Vantage Lake under a thick layer of basalt. Water-soaked logs in the lake were slowly petrified, forever preserving them as stone.
Setting the Stage
The cake-like layers of basalt built the foundation of the region. When the Ice Age floods swept across eastern Washington and down the Columbia River, they carved long, steep-walled flood channels deep into the basalt bedrock.
More than 40,000 cubic miles of basalt lava covered parts of Washington, Oregon, and Idaho.
Several layers of basalt are visible in the cliffs along both sides of the Columbia River.
Erected by Washington State Parks.
Location. 46° 57.284′ N, 119° 59.297′ W. Marker is in Vantage, Washington, in Kittitas County. Marker can be reached from Ginkgo Avenue half a mile north of Vantage Click 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. Welcome to Ginkgo Petrified Forest State Park (here, next to this marker); In the Path of Cataclysmic Floods (within shouting distance of this marker); Explore Massive Floodscapes! (within shouting distance of this marker); A Living Landscape (within shouting distance of this marker); Carving Out Basalt Layers (within shouting distance of this marker); Here and Gone (within shouting distance of this marker); Ginkgo Petrified Forest State Park (approx. 1.2 miles away); The Wanapums (approx. 1.2 miles away). Click for a list of all markers in Vantage.
Also see . . . Ginkgo Petrified Forest State Park - Wikipedia entry. (Submitted on May 2, 2015.)
Categories. • Natural Features •
Credits. This page originally submitted on , by Duane Hall of Abilene, Texas. This page has been viewed 223 times since then and 3 times this year. Photos: 1, 2, 3, 4, 5. submitted on , by Duane Hall of Abilene, Texas. This page was last revised on June 16, 2016.
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