noaa-lake-15634 Zaca Lake, California 3000 Year Leaf Wax dD and Modern Vegetation Data Feakins, S.J.; Kirby, M.E.; Cheetham, M.I.; Ibarra, Y.; Zimmerman, S.R.H. Zaca Lake, California 3000 Year Leaf Wax dD and Modern Vegetation Data 2013-11-27 NCDC-Paleoclimatology ONLINE Files Pending https://www.ncdc.noaa.gov/paleo/study/15634 Investigator S.J. Feakins Investigator M.E. Kirby Investigator M.I. Cheetham Investigator Y. Ibarra Investigator S.R.H. Zimmerman earth science paleoclimate paleolimnology delta 2H,C28 n-alkanoic acid,null,per mil VSMOW,null,paleolimnology,null,gas chromatography|isotope ratio mass spectrometry,N,null earth science paleoclimate paleolimnology delta 2H,C34 n-alkanoic acid,null,per mil VSMOW,null,paleolimnology,null,gas chromatography|isotope ratio mass spectrometry,N,null earth science paleoclimate paleolimnology delta 2H,C34 n-alkanoic acid,one standard deviation,per mil VSMOW,null,paleolimnology,null,gas chromatography|isotope ratio mass spectrometry,N,null earth science paleoclimate paleolimnology delta 2H,C22 n-alkanoic acid,one standard deviation,per mil VSMOW,null,paleolimnology,null,gas chromatography|isotope ratio mass spectrometry,N,fractionation between water and C-acid; compounded standard deviation earth science paleoclimate paleolimnology delta 2H,C28 n-alkanoic acid,one standard deviation,per mil VSMOW,null,paleolimnology,null,gas chromatography|isotope ratio mass spectrometry,N,fractionation between water and C-acid; compounded standard deviation earth science paleoclimate paleolimnology C28 n-alkanoic acid,null,null,dimensionless,null,paleolimnology,null,gas chromatography|isotope ratio mass spectrometry,N,Relative abundance for chain length i calculated where Ci/[SC22-30 even n-alkanoic acids] earth science paleoclimate paleolimnology delta 2H,C24 n-alkanoic acid,null,per mil VSMOW,null,paleolimnology,null,gas chromatography|isotope ratio mass spectrometry,N,fractionation between water and C-acid earth science paleoclimate paleolimnology delta 2H,C30 n-alkanoic acid,one standard deviation,per mil VSMOW,null,paleolimnology,null,gas chromatography|isotope ratio mass spectrometry,N,fractionation between water and C-acid; compounded standard deviation earth science paleoclimate paleolimnology delta 2H,C34 n-alkanoic acid,one standard deviation,per mil VSMOW,null,paleolimnology,null,gas chromatography|isotope ratio mass spectrometry,N,fractionation between water and C-acid; compounded standard deviation earth science paleoclimate paleolimnology C22 n-alkanoic acid,null,one standard deviation,dimensionless,null,paleolimnology,null,gas chromatography|isotope ratio mass spectrometry,N,Relative abundance for chain length i calculated where Ci/[SC22-30 even n-alkanoic acids] earth science paleoclimate paleolimnology depth,null,null,centimeter,null,paleolimnology,null,null,N,null earth science paleoclimate paleolimnology delta 2H,C26 n-alkanoic acid,null,per mil VSMOW,null,paleolimnology,null,gas chromatography|isotope ratio mass spectrometry,N,null earth science paleoclimate paleolimnology C32 n-alkanoic acid,null,null,dimensionless,null,paleolimnology,null,gas chromatography|isotope ratio mass spectrometry,N,Relative abundance for chain length i calculated where Ci/[SC22-30 even n-alkanoic acids] earth science paleoclimate paleolimnology C32 n-alkanoic acid,null,one standard deviation,dimensionless,null,paleolimnology,null,gas chromatography|isotope ratio mass spectrometry,N,Relative abundance for chain length i calculated where Ci/[SC22-30 even n-alkanoic acids] earth science paleoclimate paleolimnology modal chain length,n-alkanoic acid,null,count,null,paleolimnology,null,gas chromatography|isotope ratio mass spectrometry,N,null earth science paleoclimate paleolimnology delta 2H,C30 n-alkanoic acid,null,per mil VSMOW,null,paleolimnology,null,gas chromatography|isotope ratio mass spectrometry,N,null earth science paleoclimate paleolimnology delta 2H,C26 n-alkanoic acid,one standard deviation,per mil VSMOW,null,paleolimnology,null,gas chromatography|isotope ratio mass spectrometry,N,fractionation between water and C-acid; compounded standard deviation earth science paleoclimate paleolimnology delta 2H,C32 n-alkanoic acid,one standard deviation,per mil VSMOW,null,paleolimnology,null,gas chromatography|isotope ratio mass spectrometry,N,fractionation between water and C-acid; compounded standard deviation earth science paleoclimate paleolimnology C24 n-alkanoic acid,null,one standard deviation,dimensionless,null,paleolimnology,null,gas chromatography|isotope ratio mass spectrometry,N,Relative abundance for chain length i calculated where Ci/[SC22-30 even n-alkanoic acids] earth science paleoclimate paleolimnology delta 2H,C24 n-alkanoic acid,null,per mil VSMOW,null,paleolimnology,null,gas chromatography|isotope ratio mass spectrometry,N,null earth science paleoclimate paleolimnology delta 2H,C24 n-alkanoic acid,one standard deviation,per mil VSMOW,null,paleolimnology,null,gas chromatography|isotope ratio mass spectrometry,N,null earth science paleoclimate paleolimnology delta 2H,C26 n-alkanoic acid,null,per mil VSMOW,null,paleolimnology,null,gas chromatography|isotope ratio mass spectrometry,N,fractionation between water and C-acid earth science paleoclimate paleolimnology C28 n-alkanoic acid,null,one standard deviation,dimensionless,null,paleolimnology,null,gas chromatography|isotope ratio mass spectrometry,N,Relative abundance for chain length i calculated where Ci/[SC22-30 even n-alkanoic acids] earth science paleoclimate paleolimnology delta 2H,C32 n-alkanoic acid,null,per mil VSMOW,null,paleolimnology,null,gas chromatography|isotope ratio mass spectrometry,N,null earth science paleoclimate paleolimnology delta 2H,C34 n-alkanoic acid,null,per mil VSMOW,null,paleolimnology,null,gas chromatography|isotope ratio mass spectrometry,N,fractionation between water and C-acid earth science paleoclimate paleolimnology C22 n-alkanoic acid,null,null,dimensionless,null,paleolimnology,null,gas chromatography|isotope ratio mass spectrometry,N,Relative abundance for chain length i calculated where Ci/[SC22-30 even n-alkanoic acids] earth science paleoclimate paleolimnology C30 n-alkanoic acid,null,null,dimensionless,null,paleolimnology,null,gas chromatography|isotope ratio mass spectrometry,N,Relative abundance for chain length i calculated where Ci/[SC22-30 even n-alkanoic acids] earth science paleoclimate paleolimnology C26 n-alkanoic acid,null,one standard deviation,dimensionless,null,paleolimnology,null,gas chromatography|isotope ratio mass spectrometry,N,Relative abundance for chain length i calculated where Ci/[SC22-30 even n-alkanoic acids] earth science paleoclimate paleolimnology carbon preference index,n-alkanoic acid,null,dimensionless,null,paleolimnology,null,gas chromatography|isotope ratio mass spectrometry,N,null earth science paleoclimate paleolimnology delta 2H,C22 n-alkanoic acid,null,per mil VSMOW,null,paleolimnology,null,gas chromatography|isotope ratio mass spectrometry,N,null earth science paleoclimate paleolimnology delta 2H,C22 n-alkanoic acid,one standard deviation,per mil VSMOW,null,paleolimnology,null,gas chromatography|isotope ratio mass spectrometry,N,null earth science paleoclimate paleolimnology delta 2H,C28 n-alkanoic acid,one standard deviation,per mil VSMOW,null,paleolimnology,null,gas chromatography|isotope ratio mass spectrometry,N,null earth science paleoclimate paleolimnology delta 2H,C30 n-alkanoic acid,one standard deviation,per mil VSMOW,null,paleolimnology,null,gas chromatography|isotope ratio mass spectrometry,N,null earth science paleoclimate paleolimnology delta 2H,C32 n-alkanoic acid,one standard deviation,per mil VSMOW,null,paleolimnology,null,gas chromatography|isotope ratio mass spectrometry,N,null earth science paleoclimate paleolimnology delta 2H,C22 n-alkanoic acid,null,per mil VSMOW,null,paleolimnology,null,gas chromatography|isotope ratio mass spectrometry,N,fractionation between water and C-acid earth science paleoclimate paleolimnology delta 2H,C32 n-alkanoic acid,null,per mil VSMOW,null,paleolimnology,null,gas chromatography|isotope ratio mass spectrometry,N,fractionation between water and C-acid earth science paleoclimate paleolimnology C24 n-alkanoic acid,null,null,dimensionless,null,paleolimnology,null,gas chromatography|isotope ratio mass spectrometry,N,Relative abundance for chain length i calculated where Ci/[SC22-30 even n-alkanoic acids] earth science paleoclimate paleolimnology C30 n-alkanoic acid,null,one standard deviation,dimensionless,null,paleolimnology,null,gas chromatography|isotope ratio mass spectrometry,N,Relative abundance for chain length i calculated where Ci/[SC22-30 even n-alkanoic acids] earth science paleoclimate paleolimnology age,null,null,calendar year before present,null,paleolimnology,null,null,N,null earth science paleoclimate paleolimnology delta 2H,C26 n-alkanoic acid,one standard deviation,per mil VSMOW,null,paleolimnology,null,gas chromatography|isotope ratio mass spectrometry,N,null earth science paleoclimate paleolimnology delta 2H,C28 n-alkanoic acid,null,per mil VSMOW,null,paleolimnology,null,gas chromatography|isotope ratio mass spectrometry,N,fractionation between water and C-acid earth science paleoclimate paleolimnology delta 2H,C30 n-alkanoic acid,null,per mil VSMOW,null,paleolimnology,null,gas chromatography|isotope ratio mass spectrometry,N,fractionation between water and C-acid earth science paleoclimate paleolimnology delta 2H,C24 n-alkanoic acid,one standard deviation,per mil VSMOW,null,paleolimnology,null,gas chromatography|isotope ratio mass spectrometry,N,fractionation between water and C-acid; compounded standard deviation earth science paleoclimate paleolimnology C26 n-alkanoic acid,null,null,dimensionless,null,paleolimnology,null,gas chromatography|isotope ratio mass spectrometry,N,Relative abundance for chain length i calculated where Ci/[SC22-30 even n-alkanoic acids] earth science paleoclimate paleolimnology average chain length,n-alkanoic acid,null,count,null,paleolimnology,null,gas chromatography|isotope ratio mass spectrometry,N,null earth science paleoclimate paleolimnology hydrogen isotopes geoscientificInformation 2932 cal yr BP -58 cal yr BP Complete 34.77778 34.77778 -120.0392 -120.0392 730 730 Continent North America United States Of America California Zaca Lake>LATITUDE 34.77778>LONGITUDE -120.0392 None Please cite original publication, online resource, dataset and publication DOIs (where available), and date accessed when using downloaded data. If there is no publication information, please cite investigator, title, online resource, and date accessed. The appearance of external links associated with a dataset does not constitute endorsement by the Department of Commerce/National Oceanic and Atmospheric Administration of external Web sites or the information, products or services contained therein. For other than authorized activities, the Department of Commerce/NOAA does not exercise any editorial control over the information you may find at these locations. These links are provided consistent with the stated purpose of this Department of Commerce/NOAA Web site. English DOC/NOAA/NESDIS/NCEI National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce https://www.ncdc.noaa.gov/data-access/paleoclimatology-data DATA Center Contact Bruce Bauer bruce.a.bauer@noaa.gov paleo@noaa.gov 303-497-6280 303-497-6513

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Boulder CO 80305-3328 USA online ASCII Sarah J. Feakins, Matthew E. Kirby, Michael I. Cheetham, Yadira Ibarra, Susan R.H. Zimmerman 2014 Organic Geochemistry 66 48-59 10.1016/j.orggeochem.2013.10.015 http://www.sciencedirect.com/science/article/pii/S0146638013002428

The hydrogen isotopic composition of plant molecular markers in modern vegetation and marine sediments in southern California have been intensively studied. Here we report a late Holocene reconstruction from Zaca Lake in coastal southern California, together with modern hydrological and vegetation studies in the catchment. The small catchment and decadal sampling resolution throughout the 9 m, 3000 yr sedimentary record provided a high resolution terrigenous counterpart of nearby marine records from the Santa Barbara Basin. Today, dD values of precipitation average -51.5‰ ± 18 (1sigma, n = 7). Modern plant leaf wax dD values for the C28n-alkanoic acid averaged -141‰ ± 11 (1sigma, n = 10) for Quercus agrifolia, with a calculated fractionation relative to precipitation (Ewax/precip) of -94‰ ± 22 (1sigma, n = 10); in contrast, there was negligible production of the C28 acid by co-dominant Pinus coulteri. Downcore, the C28 acid dD values ranged between -101‰ and -177‰ (mean -150‰ ± 8, 1sigma, n = 490). Abundance distributions suggested that the sedimentary C28 acid was dominated by Quercus, implying that paleoprecipitation varied between extremes of −8‰ and −92‰ (mean −63‰ ± 14, compound 1σ, n = 490). The 3000 yr leaf wax D/H record from Zaca Lake revealed substantial temporal variability, greater than observed in a speleothem reconstruction of similar resolution. We suggest that the plant-based proxy may magnify the variability by sampling spring precipitation preferentially. Centennial-duration positive isotopic excursions were associated with more sub-tropical moisture sources and drier conditions including during the Medieval Climatic Anomaly, and negative excursions were associated with N Pacific sources and wetter conditions including during the Little Ice Age. STUDY NOTES: Zaca Lake, Southern coastal California sediment leaf wax hydrogen isotopic composition data spanning the last 3000 years. Age model from radiocarbon and historical datums including appearance of pollen of non-native species. Leaf wax D/H is used to reconstruct hydroclimate changes including changes in moisture source regions. Modern vegetation in the catchment are also studied to provide context for the downcore record. Data from Zaca Lake core 1C (USC-ZACA09-1C), 8.2 Ha lake area, 12m water depth. This record extends to 872cm depth and 2932 years.

GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/usa/california/zaca2014.txt GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/usa/california/zaca2014.xls USA/NOAA DIF Version 9.8.4 2019-06-03 2019-06-03