ammonites
USGS# M4595 - San Emigdio Fm, Kern County (Eocene of the United States)

Where: Kern County, California (35.1° N, 119.2° W: paleocoordinates 34.1° N, 108.2° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: San Emigdio Formation, Priabonian (37.2 - 33.9 Ma)

• From upper 9 m of fossiliferous section below yellow sandstone, near base of San Emigdio Formation. The San Emigdio Formation conformably overlies the Tejon Formation, and is in turn overlain by the Pleito Formation. The San Emigdio Formation has a Late Eocene=refugian age=Priabonian.

• bed-level stratigraphic resolution

Environment/lithology: transition zone or lower shoreface; lithified sandstone

• The San Emigdio Formation is interpreted as a trangressive-regressive sequence. The coarse facies at the base of the formation presumably represent an initial transgressive phase. From upper part of the inner sublittoral (neritic) zone, 9-35 m deep.
• Marine sandstone. Appears to be mostly lithified from photos in publication. No detailed lithology or lithification comments mentioned in text.

Size class: macrofossils

Reposited in the USGS

Collection methods: quarrying,

• Collected by T.H. Nilson and W.O. Addicott. Collections likely to be reposited at USGS Menlo Park or USNM (not specified).

Primary reference: T. H. Nilsen. 1987. Stratigraphy and sedimentology of the Eocene Tejon Formation, western Techachapi and San Emigdio Mountains, California. United States Geological Survey Professional Paper 1268:1-110 [A. Miller/A. Hendy/A. Hendy] more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 52799: authorized by Austin Hendy, entered by Austin Hendy on 21.08.2005

Creative Commons license: CC BY-NC-ND (attribution-noncommercial-no derivatives)