| dbo:abstract
|
- Die Sixtymile-Formation ist die unterste Formation der kambrischen Tonto Group im Südwesten der Vereinigten Staaten von Amerika. Sie wurde im Zeitraum 527 bis 508 Millionen Jahre abgelagert (Kambrium – Terreneuvium, 2. Stufe sowie 2. Serie, 3. und 4. Stufe). (de)
- The Sixtymile Formation is a very thin accumulation of sandstone, siltstone, and breccia underlying the Tapeats Sandstone that is exposed in only four places in the Chuar Valley. These exposures occur atop Nankoweap Butte and within Awatubi and Sixtymile Canyons in the eastern Grand Canyon, Arizona. The maximum preserved thickness of the Sixtymile Formation is about 60 meters (200 ft). The actual depositional thickness of the Sixtymile Formation is unknown owing to erosion prior to deposition of the Tapeats Sandstone. Sixtymile Formation and the underlying Chuar Group are preserved only in a broad asymmetric fold comprising both units, called the Chuar syncline. The Chuar Syncline is a doubly plunging fold, which means that along the hingeline within the axis of the syncline, beds in some areas (Nankoweap Canyon) dip toward the south, and in other areas (Lava Chuar Canyon), beds dip toward the north. The Sixtymile Formation, Chuar Group, and Chuar Syncline is bounded on the east by the Butte fault zone and on all other sides by the overlying Tapeats Sandstone. The hingeline of the Chuar Syncline parallels the trace of the Butte fault, suggesting a genetic relationship between the syncline and the fault. In descending order, the Sixtymile Formation is underlain by the Chuar Group, Nankoweap Formation, and the Unkar Group. The Unkar Group lies unconformably upon deeply eroded granites, gneisses, pegmatites, and schists of the Vishnu Basement Rocks. The Nankoweap and Sixtymile formations together with the Chuar and Unkar groups comprise the Grand Canyon Supergroup. (en)
|
| dbo:thumbnail
| |
| dbo:wikiPageExternalLink
| |
| dbo:wikiPageID
| |
| dbo:wikiPageLength
|
- 15254 (xsd:nonNegativeInteger)
|
| dbo:wikiPageRevisionID
| |
| dbo:wikiPageWikiLink
| |
| dbp:age
| |
| dbp:caption
|
- Sixtymile Formation in Grand Canyon (en)
|
| dbp:extent
|
- the Chuar syncline, Grand Canyon (en)
|
| dbp:namedby
|
- Ford et al. , Ford and Breed , and Elston (en)
|
| dbp:otherlithology
|
- intraformational breccia (en)
|
| dbp:overlies
| |
| dbp:period
| |
| dbp:prilithology
|
- siltstone and sandstone (en)
|
| dbp:region
| |
| dbp:thickness
| |
| dbp:type
| |
| dbp:underlies
| |
| dbp:unitof
| |
| dbp:wikiPageUsesTemplate
| |
| dcterms:subject
| |
| rdf:type
| |
| rdfs:comment
|
- Die Sixtymile-Formation ist die unterste Formation der kambrischen Tonto Group im Südwesten der Vereinigten Staaten von Amerika. Sie wurde im Zeitraum 527 bis 508 Millionen Jahre abgelagert (Kambrium – Terreneuvium, 2. Stufe sowie 2. Serie, 3. und 4. Stufe). (de)
- The Sixtymile Formation is a very thin accumulation of sandstone, siltstone, and breccia underlying the Tapeats Sandstone that is exposed in only four places in the Chuar Valley. These exposures occur atop Nankoweap Butte and within Awatubi and Sixtymile Canyons in the eastern Grand Canyon, Arizona. The maximum preserved thickness of the Sixtymile Formation is about 60 meters (200 ft). The actual depositional thickness of the Sixtymile Formation is unknown owing to erosion prior to deposition of the Tapeats Sandstone. (en)
|
| rdfs:label
|
- Sixtymile-Formation (de)
- Sixtymile Formation (en)
|
| owl:sameAs
| |
| prov:wasDerivedFrom
| |
| foaf:depiction
| |
| foaf:isPrimaryTopicOf
| |
| is dbo:wikiPageWikiLink
of | |
| is foaf:primaryTopic
of | |
