Cited by 91Archaeology and ancient environmental studiesGeology and Paleoclimatology ResearchMaritime and Coastal Archaeology

The DOI matches its Crossref record; 34 of the 41 references it cites were found in a registry or an index.

Differences in Radiocarbon Age between Shell and Charcoal from a Holocene Shellmound in Northern California

Ingram, B. Lynn·1998·Quaternary Research

Abstract

The West Berkeley shellmound, the oldest well-dated archaeological site in the San Francisco Bay region, contains shell and charcoal ranging in age from ca. 1200 to 5700 cal yr B.P. Radiocarbon ages of marine shell and charcoal collected from fifteen stratigraphic levels in the West Berkeley shellmound suggest changes in the 14C content of San Francisco Bay surface waters relative to the atmosphere (the oceanic reservoir age) over the past 5000 yr. The reservoir age of San Francisco Bay waters fluctuated between 870 and −170 14C yr over the past 5000 yr, with the lowest values occurring 2900 to 3800 cal yr B.P. and the highest values between 1200 and 2000 cal yr B.P. Changes in the radiocarbon reservoir age may be due to changes in the strength of seasonal wind-driven upwelling off coastal California, where upwelling brings 14C-depleted waters to the surface. The period of lowest ΔR values (at 3500 to 3900 cal yr B.P.) is coincident with relatively low salinity in San Francisco Bay (indicating high freshwater inflow) and wet climate in California based on lake level records. The period of high ΔR values (1200–2000 cal yr B.P.) is coincident with one of the driest periods in California during the late Holocene. These data suggest a link between coastal upwelling and precipitation over central California. The age of the top of West Berkeley mound and several other mounds in the San Francisco Bay region (1100 to 1300 cal yr B.P.) coincides with a prolonged dry period in California and low river inflow to San Francisco Bay. Perhaps the sites were abandoned because of the drought.

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Crossref · 10.1006/qres.1997.1944

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34 of 34 references verified0 citation errors · 0 not checkable

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Show all 41 references

Research works printed but not linked: 3

  1. Lightfoot, 1997, Cultural construction of coastal landscapes: A middle Holocene perspective from San Francisco Bay, Archaeology of the California Coast during the Middle Holocene, 129
  2. Nelson, 1909, Shellmounds of the San Francisco Bay region. University of California, Publications in American Archaeology and Ethnology, 7, 309
  3. Anderson, 1992, Long-term changes in the frequency of occurrence of El Nino events, El Niño, Historical and Paleoclimatic Aspects of the Southern Oscillation

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Metadata

Authors
Ingram, B. L.
Affiliations
University of California, Berkeley (US)
Corresponding author
Ingram, B. Lynn
Venue
Quaternary Research
Published
1998-01
Volume
49
Issue
1
Pages
102-110
ISSN
  • 0033-5894 (ISSN-L)
  • 1096-0287
OpenAlex
W2073300235
Cited by
91
References
41
Citations by year
2024: 2 · 2023: 3 · 2022: 6 · 2021: 3 · 2020: 2 · 2019: 1 · 2018: 2 · 2017: 3 · 2016: 2 · 2015: 5 · 2014: 1 · 2013: 1 · 2012: 3
FWCI
6.89
Type
journal article
Language
en
Open access
closed
Locations
Quaternary Research (publishedVersion)
Topics
  • Social Sciences › Archeology › Archaeology and ancient environmental studies
  • Physical Sciences › Earth and Planetary Sciences › Atmospheric Science › Geology and Paleoclimatology Research
  • Social Sciences › Arts and Humanities › Archeology (arts and humanities) › Maritime and Coastal Archaeology
Keywords
radiocarbon reservoir age, marine shells, charcoal, San Francisco Bay, Holocene, coastal upwelling, California Current, freshwater discharge, late Holocene drought, site abandonment, San Francisco Bay region

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