Also known as Locality #66 (Moore, 1963); USGS 18894
Where: Lincoln County, Oregon (44.8° N, 124.1° W: paleocoordinates 44.6° N, 119.4° W)
• coordinate based on nearby landmark
• outcrop-level geographic resolution
When: Astoria Formation, Middle Miocene (16.0 - 11.6 Ma)
• About 40-50 ft below top of measured section. From unknown stratigraphic position. 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; fine-grained, concretionary, silty, carbonaceous sandstone
Size class: macrofossils
Preservation: concretion, replaced with other
Reposited in the CAS, USNM
Collection methods: quarrying,
• Collected by E.J. Moore, 1954. Collections reside in the Californian Academy of Sciences, the U.S. National Museum, and presumably the USGS.
Primary reference: E. J. Moore. 1976. Oligocene marine mollusks from the Pittsburg Bluff Formation in Oregon. United States Geological Survey Professional Paper 922:1-66 [A. Miller/A. Hendy/P. Wagner]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 39691: authorized by Austin Hendy, entered by Austin Hendy on 03.06.2004
Creative Commons license: CC BY (attribution)
Taxonomic list