Coos Bay (Daniels Creek - Umpqua Formation) (Eocene of the United States)

Also known as Umpqua Formation (Daniels Creek, Coos Bay)

Where: Coos County, Oregon (43.4° N, 124.1° W: paleocoordinates 47.4° N, 105.1° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Umpqua Formation, Early/Lower Eocene (55.8 - 48.6 Ma)

• More than 100 feet of coarse conglomerate composed of reworked volcanics overlies the basalt. Above this, dark friable sandstone which yielded the fauna listed lies beneath another thin bed of conglomerate which is in turn overlain by a thin bed of limestone.

• bed-level stratigraphic resolution

Environment/lithology: coastal; tuffaceous, silty sandstone

• From dark friable sandstone, within a unit of thin bedded dark tuffaceous sandy shales with intercalated flaggy sandstone beds.

Size class: macrofossils

Collection methods: quarrying,

Primary reference: J. E. Allen and E.M. Baldwin. 1944. Geology and coal resources of the Coos Bay Quadrangle, Oregon. State of Oregon Department of Geology and Mineral Industries Bulletin 27:1-160 [A. Miller/A. Hendy/A. Hendy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 37873: authorized by Austin Hendy, entered by Austin Hendy on 25.03.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

• Reresentative for mollusca, no other groups mentioned or listed