Lincoln (UGSG 18923) - #130 (Moore, 1963): Langhian, Oregon

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Mammalia - Carnivora
Pteronarctos goedertae Barnes 1989
Berta 1994 1 specimen
Gastropoda - Neogastropoda - Fasciolariidae
Priscofusus medialis (Conrad 1849)
Priscofusus cf. geniculus (Conrad 1849)
Bivalvia - Nuculanida - Nuculanidae
Litorhadia astoriana (Henderson 1920)
Bivalvia - Nuculida - Nuculidae
Acila (Truncacila) conradi (Meek 1864)
Bivalvia - Cardiida - Veneridae
Katherinella (Katherinella) angustifrons (Conrad 1849)
Bivalvia - Cardiida - Tellinidae
Macoma arctata (Conrad 1849)
recombined as Macoma (Psammacoma) arctata
Macoma albaria (Conrad 1849)
Bivalvia - Arcida - Arcidae
Anadara (Anadara) devincta (Conrad 1849)
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:15.98000 - 13.82000 m.y. ago
Stratigraphy
Formation:Astoria
Stratigraphic resolution:bed
Stratigraphy comments: From a siltstone and silty shale, about 51 ft above base of exposed section in beach cliffs. From an unknown horizon. 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:concretionary calcareous siltstone
Includes fossils?Y
Includes fossils?Y
Lithology description: From siltstone and silty shale. 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 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:selective quarrying,surface (float),field collection
Reason for describing collection:taxonomic analysis
Museum repositories:CAS,USNM
Collection method comments: Collected by E.J. Moore, 1952. 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 #130 (Moore, 1963); USGS 18923
Database number:39700
Authorizer:A. Hendy, M. Uhen Enterer:A. Hendy, M. Uhen
Modifier:A. Hendy Research group:marine invertebrate
Created:2004-06-03 14:53:39 Last modified:2020-06-14 03:42:53
Access level:group members Released:2005-06-03 14:53:39
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:

16743 A. Berta. 1994. New specimens of the pinnipediform Pteronarctos from the Miocene of Oregon. Smithsonian Contributions to Paleobiology 78:1-30 [M. Uhen/M. Uhen]
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]