Lincoln (UGSG 18896) - #107 (Moore, 1963): Langhian, Oregon
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Gastropoda
- Neotaenioglossa
- Calyptraeidae
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Crepidula praerupta
Conrad 1849
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Gastropoda
- Neogastropoda
- Buccinidae
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? Searlesia carlsoni
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Gastropoda
- Ficidae
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Ficus modesta
(Conrad 1848)
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Gastropoda
- Naticidae
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Polinices canalis
Moore 1963
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synonym of Natica lincolnensis | |||||||
Cryptonatica oregonensis
(Conrad 1865)
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Bivalvia
- Arcida
- Arcidae
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Anadara (Anadara) devincta
(Conrad 1849)
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Bivalvia
- Pectinida
- Pectinidae
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Patinopecten propatulus
(Conrad 1849)
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Bivalvia
- Cardiida
- Veneridae
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Katherinella (Katherinella) angustifrons
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Bivalvia
- Cardiida
- Tellinidae
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Macoma arctata
(Conrad 1849)
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recombined as Macoma (Psammacoma) arctata | |||||||
Bivalvia
- Nuculida
- Nuculidae
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Acila (Truncacila) conradi
(Meek 1864)
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see common names |
Geography
Country: | United States | State/province: | Oregon | County: | Lincoln |
Coordinates: | 44.7° 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: | 15.97000 - 13.82000 m.y. ago |
Stratigraphy
Formation: | Astoria | ||||
Stratigraphic resolution: | bed | ||||
Stratigraphy comments: From 22 ft of siltstone and silty shale, about 51 ft above base of exposed section. Unknown member. 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: | poorly lithified calcareous siltstone |
Secondary lithology: | silty "shale" |
Includes fossils? | Y |
Includes fossils? | Y |
Lithology description: From 22 ft of siltstone and silty shale. Strata exposed consist 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 Formtaion 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: | salvage,selective quarrying,surface (float),field collection,survey of museum collection |
Reason for describing collection: | taxonomic analysis |
Museum repositories: | CAS,USNM |
Collection method comments: Collected by E.J. Moore, 1952, 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 #107 (Moore, 1963); USGS 18896 | ||
Database number: | 39599 | ||
Authorizer: | A. Hendy | Enterer: | A. Hendy |
Modifier: | A. Hendy | Research group: | marine invertebrate |
Created: | 2004-05-31 20:07:47 | Last modified: | 2020-06-14 03:41:00 |
Access level: | group members | Released: | 2005-05-31 20:07:47 |
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] |