POLLEN AND PHYTOLITH ANALYSIS AT CA-ORA-665, IRVINE COAST, CALIFORNIA

Site Ca-Ora-665 is located in the foothills between Pelican Point and
Pelican Hill. Three uncorrected shell dates ranging from 4800 ± 90 BP to 4980
+ 70 BP place occupation of this site within the Milling stone Horizon. Pollen
and phytolith samples were analyzed from rock clusters, hearths, in association
with groundstone, and from a burial to examine the subsistence and plant
utilization record at this site. In addition, a pollen column was examined from
an off-site area to act as a control for interpreting economic pollen.

Ca-Ora-665遗址位于鹈鹕角（Pelican Point）与鹈鹕山（Pelican Hill）之间的山麓地带。三组未校正的贝壳测年数据（年代范围为4800±90 BP（Before Present，距今）至4980+70 BP）将该遗址的人类活动年代限定在磨石层位（Milling stone Horizon）内。研究人员从岩石堆积、灶坑、伴生磨制石器的遗存以及一处墓葬中采集花粉与植硅体（phytolith）样品开展分析，以探究该遗址的生计模式与植物利用记录。此外，还对一处遗址外围区域的花粉柱样（pollen column）进行了检测，以此作为解读经济类花粉的对照样本。