Umtanum Ridge

Umtanum Ridge

Umtanum Ridge is a long anticline mountain ridge in Yakima County and Kittitas County in the U.S. state of Washington. It runs east-southeast from the Cascade Range, through the Yakima Training Center to the edge of the Columbia River at Priest Rapids Dam and Hanford Reach. The eastern end of Umtanum Ridge enters Hanford Reach National Monument and the Hanford Site. Umtanum Ridge is paralleled on the north by Manastash Ridge and on the south by Yakima Ridge. The Yakima River cuts through the ridge at the Umtanum Ridge Water Gap.

Umtanum Ridge is part of the Yakima Fold Belt of east-tending long ridges formed by the folding of Miocene Columbia River basalt flows. [ [http://gldims.cr.usgs.gov/webapps/cfusion/Sites/qfault/qf_web_disp.cfm?disp_cd=C&qfault_or=1327&ims_cf_cd=cf Complete Report for Saddle Mountains structures] , USGS Earthquake Hazards Program]

ee also

*Rattlesnake Hills
*Ahtanum Ridge
*Horse Heaven Hills

References

External links

*
* [http://www.bivouac.com/MtnPg.asp?MtnId=20465 Umtanum Ridge] , Bivouac.com


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  • Umtanum Ridge Water Gap — is a water gap cut by the Yakima River through Manastash and Umtanum Ridge anticlines, which are part of the Yakima Fold Belt near the western edge of the Columbia River Plateau located in central Washington state. This National Natural Landmark… …   Wikipedia

  • Yakima Ridge — is a long anticline mountain ridge in Yakima County and Benton County in the U.S. state of Washington. From its western end just north of the city of Yakima, the ridge runs east southeast through the Yakima Training Center to its eastern end at… …   Wikipedia

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  • Rattlesnake Hills — The Rattlesnake Hills is a long anticline mountain ridge in Yakima County and Benton County in the U.S. state of Washington. Also known as Rattlesnake Mountain and Rattlesnake Ridge,GNIS|1507733|Rattlesnake Hills] it should not be confused with… …   Wikipedia

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