Lincoln (UGSG 18930) - #164 (Moore, 1963): Langhian, Oregon
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
|
Bivalvia
- Cardiida
- Tellinidae
|
|||||||
|
Macoma arctata
(Conrad 1849)
|
|||||||
| recombined as Macoma (Psammacoma) arctata | |||||||
|
Macoma albaria
(Conrad 1849)
|
|||||||
|
Bivalvia
- Nuculida
- Nuculidae
|
|||||||
|
Acila (Truncacila) conradi
(Meek 1864)
|
|||||||
|
Gastropoda
- Neogastropoda
- Siphonaliidae
|
|||||||
|
Bruclarkia cf. oregonensis
(Conrad 1848)
|
|||||||
|
Gastropoda
- Naticidae
|
|||||||
|
Cryptonatica oregonensis
(Conrad 1865)
|
|||||||
| see common names | |||||||
Geography
| Country: | United States | State/province: | Oregon | County: | Lincoln |
| Coordinates: | 44.6° North, 124.1° West (view map) | ||||
| Paleocoordinates: | 44.5° North, 119.0° West | ||||
| Basis of coordinate: | based on nearby landmark | ||||
| Geographic resolution: | outcrop |
Time
| Period: | Neogene | Epoch: | Miocene |
| Stage: | Langhian | 10 m.y. bin: | Cenozoic 5 |
| Key time interval: | Langhian | ||
| Age range of interval: | 15.98000 - 13.82000 m.y. ago |
Stratigraphy
| Formation: | Astoria | ||||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: Beds immediately overlying the Nye Shale. Astoria Formation has been used as a name for almost all of the marine middle Miocene sedimentary rocks of Washington and Oregon although these correlations are poorly constrained. The formation has been divided into three members: a lower sandstone, a shale, and an upper sandstone. These rocks form the northern limb of a syncline, the asis of which is exposed east of Astoria, and the syncline trends NE and plunges to the SW. The Astoria Formation is intermittently exposed; theya re faulted and exposures are interupted by volcanic rocks and slides. The maximum thickness of any exposure is 25 feet. | |||||
Lithology and environment
| Primary lithology: | concretionary poorly lithified silty,calcareous "shale" |
| Secondary lithology: | fine,concretionary silty,calcareous sandstone |
| Includes fossils? | Y |
| Includes fossils? | Y |
| Lithology description: Strata exposed consist of shale varying in silt and sand content, siltstone, fine-grained sandstone with varying amounts of silt, coarse-grained sandstone, conglomerate, and tuff. Calcareous silty shale and fine-grained silty sandstone generally predominate. | |
| Environment: | coastal indet. |
| Geology comments: Astoria Formation is faulted and interupted in exposure by volcanic rocks and land slides. | |
Taphonomy
| Modes of preservation: | body,concretion,replaced with other |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection excludes: | some macrofossils |
| Collection methods: | selective quarrying,surface (float),field collection |
| Reason for describing collection: | taxonomic analysis |
| Museum repositories: | CAS,USNM |
| Collection method comments: Collected by E.J. Moore, 1954. Collections reside in the Californian Academy of Sciences, the U.S. National Museum, and presumably the USGS. | |
| Taxonomic list comments:Exhaustive for mollusca | |
Metadata
| Also known as: | Locality #164 (Moore, 1963); USGS 18930 | ||
| Database number: | 39800 | ||
| Authorizer: | A. Hendy | Enterer: | A. Hendy |
| Modifier: | A. Hendy | Research group: | marine invertebrate |
| Created: | 2004-06-06 16:26:37 | Last modified: | 2020-06-14 03:43:26 |
| Access level: | group members | Released: | 2005-06-06 16:26:37 |
| Creative Commons license: | CC BY | ||
Reference information
Primary reference:
| 10616. | E. J. Moore. 1963. Miocene marine mollusks from the Astoria Formation in Oregon. United States Geological Survey Professional Paper 419 [A. Miller/A. Hendy/A. Hendy] |
Secondary references:
| 18061 | E. A. Nesbitt. 2018. Cenozoic Marine Formations of Washington and Oregon: an annotated catalogue. PaleoBios 35:1-20 [M. Uhen/M. Uhen/M. Uhen] |