Buried by Enormous Lava Floods

Buried by Enormous Lava Floods (HM1KAU)

Location: Vantage, WA 98950 Kittitas County
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Country: United States of America
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N 46° 57.284', W 119° 59.297'

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Millions of years ago, some of the largest lava flows on earth poured over this area again and again. Enormous floods of molten lava flowed out from long, parallel vents, burying the area in more than 5,000 feet of basalt.

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.

(Map Caption)
More than 40,000 cubic miles of basalt lava covered parts of Washington, Oregon, and Idaho.

(Photo Caption)
Several layers of basalt are visible in the cliffs along both sides of the Columbia River.
Placed ByWashington State Parks
Marker ConditionNo reports yet
Date Added Saturday, May 2nd, 2015 at 6:01pm PDT -07:00
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Locationbig map
UTM (WGS84 Datum)11T E 272629 N 5204468
Decimal Degrees46.95473333, -119.98828333
Degrees and Decimal MinutesN 46° 57.284', W 119° 59.297'
Degrees, Minutes and Seconds46° 57' 17.04" N, 119° 59' 17.82" W
Driving DirectionsGoogle Maps
Area Code(s)509
Closest Postal AddressAt or near Recreation Dr, Vantage WA 98950, US
Alternative Maps Google Maps, MapQuest, Bing Maps, Yahoo Maps, MSR Maps, OpenCycleMap, MyTopo Maps, OpenStreetMap

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