Sidney (UO 2557) - #39 (Hickman): Priabonian, Oregon
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Bivalvia
- Cardiida
- Cardiidae
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Parvicardium eugenense
(Clark 1925)
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Bivalvia
- Cardiida
- Veneridae
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Pitar (Pitar) dalli
(Weaver 1916)
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Bivalvia
- Nuculida
- Nuculidae
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Acila (Truncacila) shumardi
(Dall 1909)
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Gastropoda
- Opisthobranchia
- Cylichnidae
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Scaphander stewarti
Durham 1944
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Gastropoda
- Neogastropoda
- Siphonaliidae
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Bruclarkia vokesi
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Gastropoda
- Bursidae
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Olequahia schencki
Durham 1944
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| see common names | |||||||
Geography
| Country: | United States | State/province: | Oregon | County: | Marion |
| Coordinates: | 44.8° North, 123.0° West (view map) | ||||
| Paleocoordinates: | 45.1° North, 110.8° West | ||||
| Basis of coordinate: | based on nearby landmark | ||||
| Geographic resolution: | outcrop |
Time
| Period: | Paleogene | Epoch: | Eocene |
| Stage: | Priabonian | 10 m.y. bin: | Cenozoic 3 |
| Key time interval: | Priabonian | ||
| Age range of interval: | 37.71000 - 33.90000 m.y. ago |
Stratigraphy
| Formation: | Eugene | ||||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: Eugene Formation can be subdivided faunally: a lower unit correlating to the Keasey Fm, a middle unit correlating to the Gries Ranch Beds of WA, and a upper unit correlated with the Pittsburg Bluff Fm. Thickness of formation may be up to 15,000 feet, but probably around 5,000 feet. Most of the outcrops are scattered so it is difficult to estimate their relative stratigraphic placement | |||||
Lithology and environment
| Primary lithology: | tuffaceous,brown,gray,blue lithified sandstone |
| Secondary lithology: | tuffaceous,brown,gray,blue siltstone |
| Includes fossils? | Y |
| Includes fossils? | Y |
| Lithology description: Tuffaceous and highly feldspathic sandstone or siltstone which is bluish-gray to olive when fresh and weathers to a buff or orange-brown color. Gray sandstone and siltstone beds may range from several to 50 feet in thickness and are interbedded with minor amounts of sandy sahel and clay shale, occasional beds of conglomerate, and thin lenses of gray or buff-colored volcanic ash | |
| Environment: | coastal indet. |
Taphonomy
| Modes of preservation: | body,mold/impression,trace |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection excludes: | some macrofossils |
| Collection methods: | selective quarrying,field collection,survey of museum collection |
| Reason for describing collection: | taxonomic analysis |
| Museum repositories: | CAS |
| Collection method comments: Collections held at University of Oregon, University of California, Californian Academy of Sciences (CAS), United States Geological Survey (USGS), and Stanford University (NP). | |
| Taxonomic list comments:Exhaustive for mollusca | |
Metadata
| Also known as: | UO 2557 | ||
| Database number: | 39027 | ||
| Authorizer: | A. Hendy | Enterer: | A. Hendy |
| Modifier: | A. Hendy | Research group: | marine invertebrate |
| Created: | 2004-05-18 19:40:20 | Last modified: | 2013-11-25 13:37:23 |
| Access level: | the public | Released: | 2004-05-18 19:40:20 |
| Creative Commons license: | CC BY | ||
Reference information
Primary reference:
| 10532. | C. J. S. Hickman. 1969. The Oligocene marine molluscan fauna of the Eugene Formation in Oregon. University of Oregon Museum of Natural History Bulletin 16:1-112 [A. Miller/A. Hendy/P. Wagner] |