Oclese Sand (middle) (Miocene of the United States)

Where: Kern County, California (35.3° N, 119.3° W: paleocoordinates 34.5° N, 115.0° W)

• coordinate based on nearby landmark

• basin-level geographic resolution

When: Middle Member (Oclese Sand Formation), Middle Miocene (16.0 - 11.6 Ma)

• The middle part of the Oclese Sand seems to be predominantly nonmarine. The marine portion of the formation is characterized by unconsolidated medium to very coarse cross-bedded tuffaceous sand containing pebbles and cobbles. Contacts with the upper and lower parts of the Oclese Sand are marked by pebble horizons. Maximum thickness of the formation is approximately 1400 ft. Grades laterally into siltstone of the underlying Freeman Silt and is overlain by the Round Mountain Silt.

• member-level stratigraphic resolution

Environment/lithology: coastal; poorly lithified, medium-grained, concretionary, pebbly, tuffaceous sandstone

• Unconsolidated medium to very coarse cross-bedded tuffaceous sand containing pebbles and cobbles.

Size class: macrofossils

Reposited in the CAS, LACM, UCMP

Collection methods: quarrying,

• Collections housed at various institutes: USGS (Wasington and Menlo Park), UCMP, LACM, CAS, Stanford University, UCLA, UCR.

Primary reference: W.O. Addicott. 1970. Miocene Gastropods and Biostratigraphy of the Kern River Area, California. United States Geological Survey Professional Paper 642:1-172 [A. Miller/A. Hendy/A. Hendy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 38026: authorized by Austin Hendy, entered by Austin Hendy on 31.03.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

• Exhaustive for gastropods; includes some occaisional other taxa