Lincoln (UGSG 18872) - #120 (Moore, 1963): Langhian, Oregon

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Bivalvia - Nuculida - Nuculidae
Bivalvia - Nuculanida - Nuculanidae
Bivalvia - Nuculanida - Yoldiidae
Yoldia sp. n. sp. Möller 1842
Bivalvia - Arcida - Arcidae
Bivalvia - Hiatellida - Hiatellidae
Bivalvia - Solenida - Solenidae
Solen conradi Dall 1900
Bivalvia - Cardiida - Tellinidae
Macoma albaria (Conrad 1849)
Macoma arctata (Conrad 1849)
Tellina emacerata Conrad 1849
Bivalvia - Cardiida - Veneridae
Bivalvia - Lucinida - Lucinidae
Lucinoma acutilineata (Conrad 1849)
Gastropoda - Neotaenioglossa - Calyptraeidae
Gastropoda - Naticidae
Sinum scopulosum (Conrad 1849)
Gastropoda - Neogastropoda - Drilliidae
Gastropoda - Neogastropoda - Siphonaliidae
Gastropoda - Neogastropoda - Buccinidae
Gastropoda - Ficidae
Ficus modesta (Conrad 1848)
see common names

Geography
Country:United States State/province:Oregon County:Lincoln
Coordinates: 44.7° North, 124.1° West (view map)
Paleocoordinates:47.9° North, 116.7° West (Wright 2013)
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: 15.98 - 13.82 m.y. ago
Stratigraphy
Formation:Astoria
Stratigraphic resolution:bed
Stratigraphy comments: From 1-2 ft of extremely fossiliferous siltstone, about 45 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: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 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 #120 (Moore, 1963); USGS 18872
Database number:39698
Authorizer:A. Hendy Enterer:A. Hendy
Modifier:A. Hendy Research group:marine invertebrate
Created:2004-06-03 14:41:00 Last modified:2025-02-22 15:12:02
Access level:group members Released:2005-06-03 14:41:00
Creative Commons license:CC0
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]