Shellmaker Island, Newport Bay, Orange Co., California. Davis, O.K., 1996.
Tilia II ASCII file shelmakr.txt

Davis, O.K. 1996.
Pollen analysis of Newport Bay, Orange County, California in association with
excavation of CA-ORA-64. Report Submitted to Michael Macko, Macko Inc.,
Santa Ana Heights, CA. 45 p.

The pollen record of Shellmaker Island spans over 8000 radiocarbon years of sedimentation. During the mid- and late Holocene (1200 - 120 cm), Chenopodiaceae-Amaranthus generally exceeds 30%, Labiatae reaches 4 %, and Ceanothus increases to 6%. From 1020 cm to 1480 cm (7000 - 8300 yr B.P.) Other Compositae percentages are over 20% and Chenopodiaceae-Amaranthus values generally are less than 20%. Sarcobatus (a taxon now absent west of the Sierra Nevada Crest) is consistently present at < 1%. Climate was relatively mesic during the occupation of CA ORA 64, and elevated percentages of Cruciferae pollen and charcoal suggest vegetation disturbance.