Sawatch Uplift: Difference between revisions
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The '''Sawatch Uplift''' {{IPAc-en|s|ə|ˈ|w|æ|tʃ}}<ref name=Sawatch>The place name "Sawatch" is pronounced {{IPAc-en|s|ə|ˈ|w|æ|tʃ}}. This name derives from the [[Ute language]] [[noun]] "''sawup''" {{IPAc-en|s|ə|ˈ|w|ʌ|p}} meaning "sand dunes". The [[Spanish language]] version of this name is usually spelled "Saguache", while the [[English language]] version is usually spelled "Sawatch".</ref><ref name=Sawup>{{citation|url=http://www.denverpost.com/outwest/ci_22666597/whats-colorado-name-pronunciation?|title=What's in a Colorado name pronunciation?|last=Merkl|first=Dameon|newspaper=[[The Denver Post]]|date=February 26, 2013|accessdate=March 7, 2013}}</ref> is a prominent [[geology|geologic]] [[anticline]] in the [[Rocky Mountains]] in central [[Colorado]] in the [[United States]]. It was formed as a bulge in the [[North American Plate]] approximately 70–65 [[mya (unit)|MYA]] during the [[Laramide orogeny]] that created the modern Rocky Mountains. The uplift runs north-south for |
The '''Sawatch Uplift''' {{IPAc-en|s|ə|ˈ|w|æ|tʃ}}<ref name=Sawatch>The place name "Sawatch" is pronounced {{IPAc-en|s|ə|ˈ|w|æ|tʃ}}. This name derives from the [[Ute language]] [[noun]] "''sawup''" {{IPAc-en|s|ə|ˈ|w|ʌ|p}} meaning "sand dunes". The [[Spanish language]] version of this name is usually spelled "Saguache", while the [[English language]] version is usually spelled "Sawatch".</ref><ref name=Sawup>{{citation|url=http://www.denverpost.com/outwest/ci_22666597/whats-colorado-name-pronunciation?|title=What's in a Colorado name pronunciation?|last=Merkl|first=Dameon|newspaper=[[The Denver Post]]|date=February 26, 2013|accessdate=March 7, 2013}}</ref> is a prominent [[geology|geologic]] [[anticline]] in the [[Rocky Mountains]] in central [[Colorado]] in the [[United States]]. It was formed as a bulge in the [[North American Plate]] approximately 70–65 [[mya (unit)|MYA]] during the [[Laramide orogeny]] that created the modern Rocky Mountains. The uplift runs north-south for about {{convert|100|miles|km|sp=us}} in central Colorado. The [[Sawatch Range]] and [[Mosquito Range]] were both formed as part of the uplift. Approximately 35 MYA, stresses in the continental plate in the center of the uplift caused the center to collapse, forming the upper Arkansas River graben. This is a trough between the Sawatch and Mosquito Range that is part of the larger [[Rio Grande Rift]]. The trough runs southward from [[Leadville, Colorado|Leadville, CO]] to the [[San Luis Valley|San Luis basin]]. The upper Arkansas Graben forms forms the headwater valley of the [[Arkansas River]].<ref name="kellog-1999">{{cite journal |last1=Kellogg |first1=Karl S |title=Neogene basins of the northern Rio Grande rift: partitioning and asymmetry inherited from Laramide and older uplifts |journal=Tectonophysics |date=May 1999 |volume=305 |issue=1-3 |pages=141–152 |doi=10.1016/S0040-1951(99)00013-X}}</ref> |
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==References== |
==References== |
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Revision as of 16:24, 23 September 2020
The Sawatch Uplift /səˈwætʃ/[1][2] is a prominent geologic anticline in the Rocky Mountains in central Colorado in the United States. It was formed as a bulge in the North American Plate approximately 70–65 MYA during the Laramide orogeny that created the modern Rocky Mountains. The uplift runs north-south for about 100 miles (160 km) in central Colorado. The Sawatch Range and Mosquito Range were both formed as part of the uplift. Approximately 35 MYA, stresses in the continental plate in the center of the uplift caused the center to collapse, forming the upper Arkansas River graben. This is a trough between the Sawatch and Mosquito Range that is part of the larger Rio Grande Rift. The trough runs southward from Leadville, CO to the San Luis basin. The upper Arkansas Graben forms forms the headwater valley of the Arkansas River.[3]
References
- ^ The place name "Sawatch" is pronounced /səˈwætʃ/. This name derives from the Ute language noun "sawup" /səˈwʌp/ meaning "sand dunes". The Spanish language version of this name is usually spelled "Saguache", while the English language version is usually spelled "Sawatch".
- ^ Merkl, Dameon (February 26, 2013), "What's in a Colorado name pronunciation?", The Denver Post, retrieved March 7, 2013
- ^ Kellogg, Karl S (May 1999). "Neogene basins of the northern Rio Grande rift: partitioning and asymmetry inherited from Laramide and older uplifts". Tectonophysics. 305 (1–3): 141–152. doi:10.1016/S0040-1951(99)00013-X.
- Roadside Geology of Colorado, Halka Chronic (1980).
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