Also known as Locality #187 (Moore, 1963)

Where: Coos County, Oregon (43.4° N, 124.3° W: paleocoordinates 43.2° N, 118.2° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Astoria Formation, Burdigalian (20.4 - 16.0 Ma)

• Float. 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.

• bed-level stratigraphic resolution

Environment/lithology: coastal; poorly lithified, concretionary, silty, calcareous shale and fine-grained, concretionary, silty, calcareous sandstone

Size class: macrofossils

Preservation: concretion, replaced with other

Reposited in the CAS, USNM

Collection methods: salvage,

• Dredgings. Collected by E.J. Moore, 1949, 1952, 1954. Collections reside in the Californian Academy of Sciences, the U.S. National Museum, and presumably the USGS.

Primary reference: 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]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 39805: authorized by Austin Hendy, entered by Austin Hendy on 06.06.2004, edited by Matthew Clapham

Creative Commons license: CC BY (attribution)