Also known as Record 40

Where: Douglas County, Oregon (43.3° N, 123.2° W: paleocoordinates 47.2° N, 104.1° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Slater Creek Member (Bushnell Rock Formation), Ypresian (56.0 - 47.8 Ma)

• 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.

• bed-level stratigraphic resolution

Environment/lithology: transition zone or lower shoreface; poorly lithified, fine-grained sandstone

Size class: macrofossils

Collection methods: quarrying,

• Collected by L. Marincovich (1993). Collections presumably reposited at USGS Menlo Park or USNM.

Primary reference: 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]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 52304: authorized by Austin Hendy, entered by Austin Hendy on 03.08.2005

Creative Commons license: CC BY (attribution)