Sample #93LM3 - Slater Creek Member (Oregon): Ypresian, Oregon

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Scaphopoda - Dentaliida - Dentaliidae
Dentalium sp. Linnaeus 1758
Bivalvia - Mytilida - Mytilidae
Brachidontes cowlitzensis (Weaver and Palmer 1922)
Bivalvia - Pholadida - Corbulidae
Corbula dickersoni Weaver and Palmer 1922
recombined as Corbula (Caryocorbula) dickersoni
Mispelled in text as "Cordula"
Bivalvia - Cardiida - Cardiidae
Nemocardium linteum (Conrad 1855)
recombined as Nemocardium (Nemocardium) linteum
Bivalvia - Cardiida - Veneridae
Microcallista conradiana (Gabb 1864)
recombined as Microcallista (Costacallista) conradiana
Bivalvia - Nuculida - Nuculidae
Acila sp. Adams and Adams 1858
Gastropoda - Opisthobranchia - Cylichnidae
Scaphander sp. Monfort 1810
Gastropoda - Naticidae
Tejonia ? moragai (Stewart 1927)
original and current combination Amaurellina moragai
Gastropoda - Neogastropoda - Fasciolariidae
Sassia bilineata (Dickerson 1916)
original and current combination Fasciolaria bilineata
Gastropoda - Neogastropoda - Cancellariidae
Bonellitia paucivaricata (Gabb 1864)
Gastropoda - Ampullinidae
Pachycrommium clarki (Stewart 1927)
see common names

Geography
Country:United States State/province:Oregon County:Douglas
Coordinates: 43.3° North, 123.2° West (view map)
Paleocoordinates:47.2° North, 104.1° West
Basis of coordinate:stated in text
Geographic resolution:outcrop
Time
Period:Paleogene Epoch:Eocene
Stage:Ypresian 10 m.y. bin:Cenozoic 2
Key time interval:Ypresian
Age range of interval:56.00000 - 47.80000 m.y. ago
Stratigraphy
Geological group:Umpqua Formation:Bushnell Rock Member:Slater Creek
Local section:Singleton Road
Regional section:Tyee
Stratigraphic resolution:bed
Stratigraphy comments: From Slater Creek Member of the Bushnell Rock Formation, Umpqua Group. This is equivalent to strata formely referred to as Bushnell Rock Member and Umpqua Formation and time equivalent to Lookingglass Formation. The Slater Creek Member unconformably overlies the Siletz RIver Volcanics and underlies the Tenmile Formation. Macrofossil biostratigraphy suggests a late Early Eocene to early Mid-Eocene age, but the member is more precisely dated as Penutian (C24n/CP10)=Ypresian.
Lithology and environment
Primary lithology:fine poorly lithified sandstone
Includes fossils?Y
Lithology description: Thick-bedded, fine-grained sandstone facies. Presumed to be at least poorly lithified given facies, local tectonics and thickness of overlying strata - but not stated in text.
Environment:offshore
Geology comments: Deposition in shallow water neritic conditions; 50 to 100 m waterdepth.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Collection methods:selective quarrying,field collection
Reason for describing collection:biostratigraphic analysis
Collection method comments: Collected by L. Marincovich (1993). Collections presumably reposited at USGS Menlo Park or USNM.
Taxonomic list comments:Presumably identified by L. Marincovich
Metadata
Also known as:Record 41
Database number:52305
Authorizer:A. Hendy Enterer:A. Hendy
Modifier:A. Hendy Research group:marine invertebrate
Created:2005-08-03 08:50:53 Last modified:2013-11-25 13:37:23
Access level:the public Released:2005-08-03 08:50:53
Creative Commons license:CC BY
Reference information

Primary reference:
14064. R. E. Wells, A. S. Jayko, A.R. Niem, G. Black, T. Wiley, E. Baldwin, K. Molenaar, K.L. Wheeler, C.B. DuRoss and R.W. Givler. 2000. Geologic Map and Database of the Roseburg 30 x 60' Quadrangle, Douglas and Coos Counties, Oregon. United States Geological Survey Open-File Report 00-367 [A. Miller/A. Hendy/A. Hendy]