Shinarump Conglomerate (Upper Triassic; Dinosaur National Monument, Utah, USA) 4 : 無料・フリー素材/写真
Shinarump Conglomerate (Upper Triassic; Dinosaur National Monument, Utah, USA) 4 / James St. John
| ライセンス | クリエイティブ・コモンズ 表示 2.1 |
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| 説明 | This outcrop is near Split Mountain in Dinosaur National Monument, Utah, through which the Green River has erosionally carved a prominent canyon. The flanks of Split Mountain are in the background.The yellowish-brown rocks in the foreground are the Shinarump Member of the basal Chinle Formation (Upper Triassic). The Chinle is a multicolored, nonmarine unit consisting of coarse-grained siliciclastics (fluvial channel facies) and fine-grained siliciclastics (floodplain facies). Quartz-permineralized fossil wood is famously common in the Chinle Formation (for example, Petrified Forest National Park in Arizona).The Shinarump Member (also known as the Shinarump Conglomerate) here consists of sandstones and conglomerates. At Dinosaur National Monument, the unit is also known as the Gartra Member of the Chinle Formation.Structurally, this is the southern flank of the Split Mountain Anticline, which strikes east-west and plunges westward. This is also the northern flank of the Jensen Syncline.Stratigraphy: Shinarump Conglomerate (Shinarump Member), lower Chinle Formation, Upper TriassicLocality: roadside outcrop southwest of Split Mountain, Dinosaur National Monument, northern Uintah County, northeastern Utah, USA (40° 26' 32.18" North latitude, 109° 15' 28.72" West longitude)------------See info. at:en.wikipedia.org/wiki/Dinosaur_National_Monument------------Geologic map of Dinosaur National Monument:pubs.usgs.gov/imap/1407/plate-1.pdf |
| 撮影日 | 2013-06-10 17:28:33 |
| 撮影者 | James St. John |
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