&nbsp;Rethinking the Antiquity of Bedrock Mortars on the Central California Coast

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"  Rethinking the Antiquity of Bedrock Mortars on the Central California Coast "
  Jones,   Terry L.;   Lebow,   Clayton G.

Document Type	:	AL
Record Number	:	940798
Doc. No	:	LA3tr0272x
Language of Document	:	English
Main Entry	:	nbsp; Jones, nbsp; Terry L.; nbsp; Lebow, nbsp; Clayton G.
Title & Author	:	nbsp;Rethinking the Antiquity of Bedrock Mortars on the Central California Coast [Article]\ nbsp; Jones, nbsp; Terry L.; nbsp; Lebow, nbsp; Clayton G.
Title of Periodical	:	Journal of California and Great Basin Anthropology
Volume/ Issue Number	:	35/2
Date	:	2015
Abstract	:	Previous assessments of the age of bedrock mortars (BRMs) on the central California coast have limited them to post cal A.D. 1250 contexts. Recent investigations from a single-component late Middle Period site with associated bedrock mortars (CA-SLO-5) on the San Luis Obispo coast, and the stratigraphic position of a bedrock mortar cup beneath dated midden residues at Swordfish Cave (CA-SBA-503) in northern Santa Barbara County, indicate that these features were used as early as 1,385 cal B.C. and that their overall age encompasses the late Early, Middle, Middle-Late Transition, and Late/Early Historic periods in this region.