| 词条 | Painted Hills |
| 释义 |
|USA |relief = 1 |label = Painted Hills |lat = 44.661 |long = -120.273 |caption = Location in the United States |marksize = 5 |float = |background = |width = 240 }}{{Location map |USA Oregon |relief = 1 |label = Painted Hills |lat = 44.661 |long = -120.273 |caption = Location in Oregon |marksize = 5 |float = |background = |width = 180 }} Painted Hills, in the northwestern United States, is one of the three units of the John Day Fossil Beds National Monument, located in Wheeler County, Oregon.[1] It totals {{convert|3132|acres|km2}} and is located {{convert|9|mi}} northwest of Mitchell, Oregon. The Painted Hills are listed as one of the Seven Wonders of Oregon.[2] Painted Hills is named after the colorful layers of its hills corresponding to various geological eras, formed when the area was an ancient river floodplain. The black soil is lignite that was vegetative matter that grew along the floodplain. The grey coloring is mudstone, siltstone, and shale.[3] The red coloring is laterite soil that formed by floodplain deposits when the area was warm and humid.[4] An abundance of fossil remains of early horses, camels, and rhinoceroses in the Painted Hills unit makes the area particularly important to vertebrate paleontologists.[5] On August 21, 2017 the Great American Eclipse passed directly over the park, allowing visitors a duration of totality of just over 2 minutes, 4 seconds.[6] GalleryReferences1. ^{{cite gnis|id=1133439|name=John Day Fossil Beds National Monument|accessdate=2008-11-09}} 2. ^{{cite web|url=http://traveloregon.com/see-do/attractions/outdoors-nature/painted-hills/|title=Painted Hills Unit|work=John Day Fossil Beds National Monument|publisher=U.S. National Park Service|accessdate=2006-12-01}} 3. ^{{cite web|title=John Day Fossil Beds National Monument, Oregon|publisher = U.S. Geological Survey|url=http://3dparks.wr.usgs.gov/johnday/html2/jd297.htm|accessdate=2006-12-01|archiveurl=https://web.archive.org/web/20060922233857/http://3dparks.wr.usgs.gov/johnday/html2/jd297.htm |archivedate=2006-09-22}} 4. ^{{cite web | title = John Day Fossil Beds National Monument, Oregon | publisher = U.S. Geological Survey | url = http://3dparks.wr.usgs.gov/johnday/html/jd275.htm | accessdate = 2006-12-01 |archiveurl = https://web.archive.org/web/20060923073421/http://3dparks.wr.usgs.gov/johnday/html/jd275.htm |archivedate = 2006-09-23}} 5. ^{{cite book|first=David|last=Alt|author2=Donald W. Hundman|title=Northwest Exposures: A Geologic History of the Northwest|publisher=Mountain Press|pages=227–231|year=1995|isbn=0-87842-323-0}} 6. ^{{cite web|url=https://www.greatamericaneclipse.com/oregon/|title=Oregon eclipse|website=Total solar eclipse of Aug 21, 2017|accessdate=11 November 2018}} External links{{commons category}}
4 : John Day Fossil Beds National Monument|Protected areas of Wheeler County, Oregon|Articles containing video clips|Landforms of Wheeler County, Oregon |
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