A 2000 yr record of Sacramento–San Joaquin river inflow to San Francisco Bay estuary, California

Research Article| April 01, 1996 A 2000 yr record of Sacramento–San Joaquin river inflow to San Francisco Bay estuary, California B. Lynn Ingram; B. Lynn Ingram 1Department of Geography, University of California, Berkeley, California 94720 Search for other works by this author on: GSW Google Scholar James C. Ingle; James C. Ingle 2Department of Geological and Environmental Sciences, Stanford University, Stanford, California 94305 Search for other works by this author on: GSW Google Scholar Mark E. Conrad Mark E. Conrad 3Berkeley Center for Isotope Geochemistry, MS 70A-3363, Earth Science Division, Lawrence Berkeley Lab, Berkeley, California 94720 Search for other works by this author on: GSW Google Scholar Author and Article Information B. Lynn Ingram 1Department of Geography, University of California, Berkeley, California 94720 James C. Ingle 2Department of Geological and Environmental Sciences, Stanford University, Stanford, California 94305 Mark E. Conrad 3Berkeley Center for Isotope Geochemistry, MS 70A-3363, Earth Science Division, Lawrence Berkeley Lab, Berkeley, California 94720 Publisher: Geological Society of America First Online: 02 Jun 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (1996) 24 (4): 331–334. https://doi.org/10.1130/0091-7613(1996)024<0331:AYROSS>2.3.CO;2 Article history First Online: 02 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation B. Lynn Ingram, James C. Ingle, Mark E. Conrad; A 2000 yr record of Sacramento–San Joaquin river inflow to San Francisco Bay estuary, California. Geology 1996;; 24 (4): 331–334. doi: https://doi.org/10.1130/0091-7613(1996)024<0331:AYROSS>2.3.CO;2 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGeology Search Advanced Search Abstract Oxygen and carbon isotopic measurements of fossil bivalves (Macoma nasuta) contained in estuarine sediment are used to reconstruct a late Holocene record of salinity and stream flow in San Francisco Bay. Discharge into the bay is a particularly good indicator of paleoclimate in California because the bay's influent streams drain 40% of the state. The isotopic record suggests that between about 1670 and 1900 calendar years (yr cal) B.P. inflow to the bay was substantially greater than the estimated prediversion inflow of 1100 m3/s. An unconformity representing a 900 yr hiatus is present in the core between 1670 and 750 yr cal B.P., possibly caused by a major hydrological event. Over the past 750 yr, stream flow to San Francisco Bay has varied with a period of 200 yr; alternate wet and dry (drought) intervals typically have lasted 40 to 160 yr. First Page Preview Close Modal You do not have access to this content, please speak to your institutional administrator if you feel you should have access.