Santa Barbara (USGS 14870) - #48 (Woodring & Bramlette, 1950) (Miocene to of the United States)

Also known as USGS 14870

Where: Santa Barbara County, California (34.9° N, 120.3° W: paleocoordinates 34.5° N, 117.8° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Tinaquaic Sandstone Member (Sisquoc Formation), Late/Upper Miocene to Late/Upper Miocene (11.6 - 3.6 Ma)

• The Sisquoc Formation contains two principal lithologic facies: a fine-grained basin facies ( Todos Santos Claystone mbr) consisting chiefly of diatomaceous mudstone and a marginal sandstone facies ( Tinaquaic sandstone mbr). The basin facies of the Sisquoc Formation overlies the Monterey Formation without discordance. A maximum thickness of 5000 ft is estimated from the subsurface, although the maximum exposed thickness of the formation is 3000 ft

• bed-level stratigraphic resolution

Environment/lithology: coastal; lithified, medium-grained, coarse, calcareous sandstone

• Medium-grained to coarse-grained sandstone with grit and calcareous beds. Fines upsection.

Size class: macrofossils

Preservation: mold/impression, replaced with phosphate

Reposited in the USGS

Collection methods: quarrying,

• Presumably reposited in UGGS collections...not specified

Primary reference: W. P. Woodring and M.N. Bramlette. 1950. Geology and paleontology of the Santa Maria District California. United States Geological Survey Professional Paper 222 [A. Miller/A. Hendy/A. Hendy]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 39405: authorized by Austin Hendy, entered by Austin Hendy on 27.05.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

• Exhaustive for mollusca
 Pholadida - Myidae
Cryptomya cf. californica Conrad 1837 softshell clam
 Cardiida - Mactridae
"Schizothaerus cf. nuttallii" = Tresus nuttallii
"Schizothaerus cf. nuttallii" = Tresus nuttallii Conrad 1837 clam
 Solenida - Pharidae
 Neogastropoda - Buccinidae
"Nassa" sp. Röding 1798 true whelk