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Fire and Ice ~ Geology of the Yakima Valley AVA

March 11, 2013

A bit about Yakima Valley AVA’s terroir.


The Yakima Valley is celebrating 30 years as the first official wine region in the Pacific Northwest. As part of the celebration, the membership of the Wine Yakima Valley association has created an educational series featuring the attributes of the Yakima Valley Appellation. Every quarter, we feature a new lesson about our appellation. The concise curriculum covers our terrain, growing conditions, industry history, and more. Following is Lesson One:

The federal government designated the AVA in early 1983; but the story of this appellation began much earlier … fifteen million years earlier. Imagine molten lava flowing from huge fissures in the Earth’s crust around what is now eastern Washington State and northern Oregon. Hundreds of these outflows eventually covered the area under thousands of feet of basalt. The massive weight of this blanket of rock actually depressed the Earth’s crust, forming the region now called the Columbia Basin.


At the…

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