ammonites
LACMIP 6210 [San Pedro Sand] (Pleistocene of the United States)

Where: Los Angeles County, California (33.9° N, 117.9° W: paleocoordinates 33.9° N, 118.0° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: San Pedro Sand Formation, Middle Pleistocene (0.8 - 0.1 Ma)

• STRATIGRAPHIC RELATIONS: From "upper fauna" zone of the San Pedro Fm, which locally is overlain by the Coyote Hills Fm (Late Pleistocene). Regional correlatives include Lomita Marl and "San Pedro Sands" in the San Pedro area. THICKNESS: From bed within unit that reaches ~100 m. AGE: Middle Pleistocene on the basis of molluscan biostratigraphy. STRATIGRAPHIC POSITION: Elevation between 64 and 65.6 m in a 25 cm thick bed, that lies approximately 4-5 m stratigraphically below LACMIP 6211 and approximately 17 m stratigraphically below the base of the overlying Coyote Hills Fm.

• bed-level stratigraphic resolution

Environment/lithology: transition zone or lower shoreface; unlithified, silty sandstone

• ENVIRONMENT: Shallow inner sublittoral water depths (9-20 m). TEMPERATURE: Temperate to warm-water, equivalent to present-day 32-34° off the California coast.
• SPECIFIC LITHOLOGY: Poorly sorted, silty to medium-grained arkosic to subarkosic, biotitic, very friable sandstone. LITHIFICATION: Unlithified given age, figured specimens (elsewhere) and collections from the unit inspected by the enterer.

Size class: macrofossils

Preservation: original aragonite, original calcite

Reposited in the LACM

Collection methods: surface (in situ),

• COLLECTOR: D. Weir and M. Morgan (unknown date). REPOSITORY: LACMIP

Primary reference: C. L. Powell and D. Stevens. 2000. Age and paleoenvironmental significance of mega-invertebrates from the "San Pedro" Formation in the Coyote Hills, Fullerton and Buena Park, Orange County, Southern California. United States Geological Survey Open-File Report 00(319):1-83 [A. Hendy/A. Hendy/A. Hendy] more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 71053: authorized by Austin Hendy, entered by Austin Hendy on 15.04.2007

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