# Northern California Continental Slope Biogenic sediment geochemistry and organic matter isotope data during the last 7700 years #----------------------------------------------------------------------- # World Data Service for Paleoclimatology, Boulder # and # NOAA Paleoclimatology Program #----------------------------------------------------------------------- # NOTE: Please cite original publication, online resource and date accessed when using this data. # If there is no publication information, please cite Investigator, title, online resource and date accessed. # # Description/Documentation lines begin with # # Data lines have no # # # Online_Resource: https://www.ncdc.noaa.gov/paleo/study/ # Online_Resource: http://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/by_contributor/addison2017/addison2017.txt # # Archive: Paleoceanography # # Parameter_Keywords: carbon isotopes, geochemistry, nitrogen isotopes #--------------------------------------- # Contribution_Date # Date: 2017-03-16 #--------------------------------------- # Title # Study_Name: Northern California Continental Slope Biogenic sediment geochemistry and organic matter isotope data during the last 7700 years #--------------------------------------- # Investigators # Investigators: Addison, Jason; Barron, John; Finney, Bruce; Kusler, Jennifer; Bukry, David; Heusser, Linda; Alexander, Clark #--------------------------------------- # Description and Notes # Description: Biogenic sediment geochemistry and organic matter isotopes (C & N) applied to reconstructing Holocene upwelling intensity of California Current during last ~7500 years. Measurement precisions- opal: +/- 0.4 wt%; total organic carbon: +/- 0.32 wt%; total nitrogen: +/- 0.32 wt%; d13C: +/- 0.04 permille; d15N: +/- 0.20 permille # Provided Keywords: California Current system, Holocene, upwelling, paleoproductivity, stable isotopes, opal, microfossils #--------------------------------------- # Publication # Authors: Addison, Jason, John Barron, Bruce Finney, Jennifer Kusler, David Bukry, Linda E. Heusser, and Clark R. Alexander # Published_Date_or_Year: 2017 # Published_Title: A Holocene record of ocean productivity and upwelling from the northern California continental slope # Journal_Name: Quaternary International # Volume: pending # Edition: # Issue: # Pages: # Report Number: # DOI: 10.1016/j.quaint.2017.02.021 # Online_Resource: http://dx.doi.org/10.1016/j.quaint.2017.02.021 # Full_Citation: # Abstract: The Holocene upwelling history of the northern California continental slope is examined using the high-resolution record of TN062-O550 (40.9°N, 124.6°W, 550 m water depth). This 7-m-long marine sediment core spans the last ~7500 years, and we use it to test the hypothesis that marine productivity in the California Current System (CCS) driven by coastal upwelling has co-varied with Holocene millennial-scale warm intervals. A combination of biogenic sediment concentrations (opal, total organic C, and total N), stable isotopes (organic matter d13C and bulk sedimentary d15N), and key microfossil indicators of upwelling were used to test this hypothesis. The record of biogenic accumulation in TN062-O550 shows considerable Holocene variability despite being located within 50 km of the mouth of the Eel River, which is one of the largest sources of terrigenous sediment to the Northeast Pacific Ocean margin. A key time interval beginning at ~2900 calibrated years before present (cal yr BP) indicates the onset of modern upwelling in the CCS, and this period also corresponds to the most intense period of upwelling in the last 7500 years. When these results are placed into a regional CCS context during the Holocene, it was found that the timing of upwelling intensification at TN062-O550 corresponds closely to that seen at nearby ODP Site 1019, as well as in the Santa Barbara Basin of southern California. Other CCS records with less refined age control show similar results, which suggest late Holocene upwelling intensification may be synchronous throughout the CCS. Based on the strong correspondence between the alkenone sea surface temperature record at ODP Site 1019 and the onset of late Holocene upwelling in northern California, we suggest that CCS warming may be conducive to upwelling intensification, though future changes are unclear as the mechanisms forcing SST variability may differ. #--------------------------------------- # Funding_Agency # Funding_Agency_Name: US Geological Survey Climate Research and Development Program # Grant: #--------------------------------------- # Site Information # Site_Name: TN062-O550 # Location: Offshore California # Country: USA # Northernmost_Latitude: 40.8656 # Southernmost_Latitude: 40.8656 # Easternmost_Longitude: -124.573 # Westernmost_Longitude: -124.573 # Elevation: -569 #--------------------------------------- # Data_Collection # Collection_Name: TN062-O550 Addison17 # First_Year: 7702 # Last_Year: 276 # Time_Unit: cal yr BP # Core_Length: 6.86 # Notes: For additional chronology and age-depth model details, please see accompanying paper by Barron et al. (2017) in Quaternary International #--------------------------------------- # Chronology_Information # Chronology: # # Labcode # core_ID_original # depth_top_orig_core # depth_bottom_orig_core # depth_top_O550 # depth_bottom_O550 # depth_comp_top_O550 # depth_comp_bottom_O550 # mat.dated # 14C.raw # 14C.raw_err # datemeth # reservoir # delta-R # delta-R_err_lo # delta-R_err_up # calib.14C.mid # calib.14C_2sig_lo # calib.14C_2sig_up # calib_method # rejected # notes # # Labcode core_ID_original depth_top_orig_core depth_bottom_orig_core depth_top_O550 depth_bottom_O550 depth_comp_top_O550 depth_comp_bottom_O550 mat.dated 14C.raw 14C.raw_err datemeth reservoir delta-R delta-R_err_lo delta-R_err_up calib.14C.mid calib.14C_2sig_lo calib.14C_2sig_up calib_method rejected notes # core_top TN062-O550BX 0 0 0 0 0 0 Sediment-water interface (AD 1996) NaN NaN Intact core-top NaN NaN NaN NaN -46 -46 -46 NaN N Age control point used in CLAM (v.2.2; Blaauw, 2010) linear interpolation age-depth model # OS-27239 TN062-O450A 28 29 49.5 50.5 74.5 75.5 Wood fragment 840 30 AMS 14C IntCal13 NaN NaN NaN 741 796 686 CALIB 7.0.2 N Age control point used in CLAM (v.2.2; Blaauw, 2010) linear interpolation age-depth model # OS-32046 TN062-O550 102 105 102 105 127 130 Planktic foraminifera (mixed) 1770 70 AMS 14C Marine13 316 85 85 1009 1243 775 CALIB 7.0.2 N Age control point used in CLAM (v.2.2; Blaauw, 2010) linear interpolation age-depth model # OS-31947 TN062-O550 102 105 102 105 NaN NaN Benthic foraminifera (Uvigerina peregrina) 2290 80 AMS 14C Marine13 316 85 85 NaN NaN NaN CALIB 7.0.2 Y Paired with planktic foram date from same depth interval; not used in age-model calculation # OS-27148 TN062-O475 152 153 182.5 185.5 207.5 210.5 Bivalve shell 3090 35 AMS 14C Marine13 316 85 85 2514 2725 2303 CALIB 7.0.2 N Age control point used in CLAM (v.2.2; Blaauw, 2010) linear interpolation age-depth model # OS-32055 TN062-O550 302 305 302 305 327 330 Planktic foraminifera (mixed) 3750 75 AMS 14C Marine13 316 85 85 3282 3574 2990 CALIB 7.0.2 N Age control point used in CLAM (v.2.2; Blaauw, 2010) linear interpolation age-depth model # OS-30949 TN062-O550 302 305 302 305 NaN NaN Benthic foraminifera (U. peregrina) 4490 35 AMS 14C Marine13 316 85 85 NaN NaN NaN CALIB 7.0.2 Y Paired with planktic foram date from same depth interval; not used in age-model calculation # OS-27149 TN062-O475 256 257 348.5 349.5 373.5 374.5 Bivalve shell 3950 60 AMS 14C Marine13 316 85 85 3565 3825 3305 CALIB 7.0.2 N Age control point used in CLAM (v.2.2; Blaauw, 2010) linear interpolation age-depth model # OS-27240 TN062-O450A 366 367 364.5 365.5 389.5 390.5 Wood fragment 3720 40 AMS 14C IntCal13 NaN NaN NaN 4077 4225 3929 CALIB 7.0.2 N Age control point used in CLAM (v.2.2; Blaauw, 2010) linear interpolation age-depth model # OS-32049 TN062-Q400 132 135 616.5 619.5 641.5 644.5 Planktic foraminifera (mixed) 6430 90 AMS 14C Marine13 316 85 85 6555 6830 6280 CALIB 7.0.2 N Age control point used in CLAM (v.2.2; Blaauw, 2010) linear interpolation age-depth model # OS-27018 TN062-Q450 160 163 623.5 626.5 648.5 651.5 Planktic foraminifera (Neogloboquadrina pachyderma) 6680 170 AMS 14C Marine13 316 85 85 6829 7253 6405 CALIB 7.0.2 N Age control point used in CLAM (v.2.2; Blaauw, 2010) linear interpolation age-depth model # OS-32052 TN062-O550 670 673 670 673 695 698 Planktic foraminifera (mixed) 7030 120 AMS 14C Marine13 316 85 85 7198 7505 6891 CALIB 7.0.2 N Age control point used in CLAM (v.2.2; Blaauw, 2010) linear interpolation age-depth model # OS-31594 TN062-O550 670 673 670 673 NaN NaN Benthic foraminifera (U. peregrina) 7760 65 AMS 14C Marine13 316 85 85 NaN NaN NaN CALIB 7.0.2 Y Paired with planktic foram date from same depth interval; not used in age-model calculation # #--------------------------------------- # Variables # Data variables follow that are preceded by "##" in columns one and two. # Variables list, one per line, shortname-tab-longname components (9 components: what, material, error, units, seasonality, archive, detail, method, C or N for Character or Numeric data) ## depth_cm depth,,,cm,,Paleoceanography,,,N ## age_calyrsBP_min95% age,,lower 95% confidence bound,cal yrs BP,,Paleoceanography,CLAM-derived sample age,,N ## age_calyrsBP_max95% age,,upper 95% confidence bound,cal yrs BP,,Paleoceanography,CLAM-derived sample age,,N ## age_calyrsBP_best age,,,cal yrs BP,,Paleoceanography,CLAM-derived sample age; best age from model probabilities,,N ## opal opal,carbonate-free bulk sediment,,percent by weight,,Paleoceanography,,wet chemical digestion; Mortlock and Froelich (1989),N ## opal_regime opal,carbonate-free bulk sediment,,percent by weight,,Paleoceanography,regime shift analysis; Rodionov (2004, 2006),,N ## TOC total organic carbon,carbonate-free bulk sediment,,percent by weight,,Paleoceanography,,elemental analyzer,N ## TN total nitrogen,carbonate-free bulk sediment,,percent by weight,,Paleoceanography,,elemental analyzer,N ## molar_NC Nitrogen/Carbon,carbonate-free bulk sediment,,unitless,,Paleoceanography,molar ratio,elemental analyzer,N ## org_d13C delta 13C,organic matter,,per mil VPDB,,Paleoceanography,,Thermo Delta isotope-ratio mass spectrometer,N ## sed_d15N delta 15N,carbonate-free bulk sediment,,per mil AIR,,Paleoceanography,,Thermo Delta isotope-ratio mass spectrometer,N #------------------------ # Data # Data lines follow (have no #) # Data line format - tab-delimited text, variable short name as header # Missing Value: -9999 depth_cm calyrsBP_min95% calyrsBP_max95% calyrsBP_best opal opal_regime TOC TN molar_NC org_d13C sed_d15N 29.5 241.82 285.3 263.5 6.000 5.266 1.22 0.13 0.0913 -23.901 4.844 34.5 290.83 341.02 315.95 5.550 5.266 1.19 0.12 0.0864 -24.347 4.351 39.5 339.8 396.8 368.41 4.890 5.266 1.27 0.13 0.0877 -24.307 4.249 49.5 437.82 508.58 473.31 5.970 5.266 1.15 0.13 0.0969 -23.617 4.853 54.5 486.92 564.67 525.76 6.110 5.266 1.35 0.15 0.0952 -23.566 4.769 59.5 535.98 620.73 578.21 6.340 5.266 1.31 0.15 0.0981 -23.485 4.974 64.5 585.01 676.82 630.66 5.450 5.266 1.21 0.13 0.0921 -23.718 4.695 69.5 634.12 732.91 683.11 4.800 5.266 1.11 0.12 0.0927 -23.627 4.639 79.5 710.95 816.71 763.46 4.676 5.266 1.175 0.125 0.0912 -23.525 4.841 84.5 728.9 848.06 788.64 4.880 5.266 1.15 0.13 0.0969 -23.637 4.834 94.5 753.26 927.17 838.98 4.360 5.266 1.16 0.13 0.0961 -23.404 5.085 99.5 762.37 969.61 864.15 6.570 5.266 1.62 0.18 0.0952 -23.475 5.058 104.5 770.66 1012.98 889.33 5.800 5.266 1.35 0.14 0.0889 -23.617 4.834 109.25 777.71 1055.48 913.24 6.090 5.266 1.17 0.12 0.0879 -23.524 4.983 134.5 927.68 1327.74 1122.25 3.969 5.266 1.16 0.12 0.0887 -23.464 4.816 144.5 1132.94 1492.25 1309.07 4.520 5.266 1.17 0.12 0.0879 -23.292 4.760 149.5 1236.28 1575.94 1402.48 4.820 5.266 1.06 0.12 0.0970 -23.444 4.797 154.5 1338.42 1659.8 1495.89 5.050 5.266 1.17 0.12 0.0879 -23.566 4.862 159.5 1437.32 1747.09 1589.3 5.270 5.266 1.15 0.12 0.0894 -23.566 4.769 164.5 1533.71 1837.47 1682.71 3.760 5.266 1.09 0.12 0.0944 -23.444 4.816 174.5 1721.76 2020.61 1869.53 5.110 5.266 1.14 0.12 0.0902 -23.525 4.704 179.5 1810.68 2115.42 1962.94 5.170 5.266 1.26 0.13 0.0884 -23.525 4.955 189.5 1986.86 2314.49 2149.76 5.480 5.266 1.4 0.14 0.0857 -23.728 4.537 194.5 2071.36 2415.77 2243.17 4.620 5.266 1.13 0.12 0.0910 -23.525 4.751 199.5 2155.38 2520.37 2336.58 5.660 5.266 1.35 0.14 0.0889 -23.312 4.918 204.5 2238.18 2624.78 2430 5.500 5.266 1.16 0.12 0.0887 -23.505 4.862 209.5 2312.23 2723.49 2517.21 5.460 5.266 1.2 0.12 0.0857 -23.586 4.732 214.5 2352.12 2748.28 2548.66 7.174 5.266 1.285 0.13 0.0867 -23.606 4.945 219.5 2388.88 2770.59 2580.11 4.660 5.266 1.05 0.1 0.0816 -23.759 4.686 224.5 2426.74 2795.04 2611.56 4.800 5.266 1.28 0.14 0.0938 -24.013 4.788 229.5 2465.23 2820.39 2643.01 4.870 5.266 1.06 0.1 0.0809 -23.992 4.277 254.5 2634.18 2961.93 2800.26 5.400 5.266 1.22 0.12 0.0843 -23.779 4.807 259.5 2664.31 2992.86 2831.71 5.590 5.266 1.29 0.13 0.0864 -23.688 4.658 264.5 2692.96 3025.08 2863.16 5.461 5.266 1.185 0.115 0.0832 -23.837 4.515 269.5 2720.03 3057.74 2894.61 4.530 4.208 1.05 0.1 0.0816 -24.043 4.128 274.5 2748.41 3092.84 2926.06 3.420 4.208 0.95 0.09 0.0812 -24.256 4.146 279.5 2774.11 3129.7 2957.51 4.280 4.208 0.97 0.09 0.0795 -23.972 4.397 289.5 2825.02 3206.96 3020.41 4.990 4.208 1.11 0.11 0.0849 -24.033 4.472 294.5 2848.22 3246.23 3051.86 4.410 4.208 1 0.1 0.0857 -23.992 4.370 298.5 2866.61 3276.6 3077.02 3.493 4.208 -9999 -9999 -9999 -9999 -9999 299.5 2870.69 3284.12 3083.31 3.350 4.208 0.99 0.09 0.0779 -24.082 4.392 304.5 2892.12 3323.17 3114.76 3.387 4.208 1.015 0.095 0.0802 -24.038 4.336 309.5 2912.93 3363.75 3146.21 3.670 4.208 0.97 0.095 0.0839 -24.035 4.402 314 2933.14 3399.94 3174.52 3.633 4.208 -9999 -9999 -9999 -9999 -9999 314.5 2935.02 3403.88 3177.66 3.820 4.208 1.03 0.095 0.0791 -24.028 4.468 319 2952.83 3440.76 3205.97 4.189 4.208 -9999 -9999 -9999 -9999 -9999 319.5 2955.05 3444.84 3209.11 3.720 4.208 1.045 0.09 0.0738 -24.193 4.351 323.5 2971.12 3477.94 3234.27 4.747 4.208 1.12 0.1 0.0765 -23.757 5.077 333.5 3054.17 3535.56 3300.1 3.549 4.208 0.97 0.09 0.0795 -24.076 4.663 344 3168.91 3577.05 3372.31 4.640 4.208 0.99 0.09 0.0779 -24.163 4.597 354 3250.51 3632.61 3441.08 4.921 4.208 0.94 0.09 0.0821 -23.975 4.813 363.5 3299.23 3714.15 3506.41 4.167 4.208 1.02 0.09 0.0756 -24.115 4.639 373 3338.73 3814.14 3571.74 4.555 4.208 1.02 0.09 0.0756 -23.833 4.738 384 3761.38 4022.33 3890.89 4.696 4.208 0.99 0.1 0.0866 -23.792 4.633 394 3972.72 4262.74 4117.07 4.275 4.208 1.02 0.1 0.0840 -24.088 4.946 403 4065.17 4345.51 4204.38 4.947 4.208 1.1 0.1 0.0779 -23.918 4.376 413.5 4172.22 4440.93 4306.24 4.808 4.208 0.98 0.09 0.0787 -23.939 4.567 424 4276.66 4538.62 4408.11 4.804 4.208 1.07 0.1 0.0801 -23.899 4.519 433 4365.85 4623.61 4495.42 3.967 4.208 0.96 0.1 0.0893 -23.858 5.012 444 4474.7 4730.16 4602.14 3.075 3.549 1.02 0.1 0.0840 -23.915 4.656 453 4561.69 4817.28 4689.45 3.240 3.549 0.92 0.09 0.0839 -24.006 4.745 464 4667.8 4923.57 4796.16 3.464 3.549 0.88 0.08 0.0779 -24.212 4.520 474 4762.66 5021.06 4893.18 3.215 3.549 0.94 0.08 0.0729 -24.573 3.891 484 4857.16 5120.68 4990.19 3.294 3.549 0.89 0.08 0.0770 -24.410 4.348 494 4950.87 5220.07 5087.2 3.945 3.549 0.86 0.08 0.0797 -24.215 4.374 504 5043.79 5320.23 5184.22 3.040 3.549 0.92 0.09 0.0839 -24.047 4.851 514 5135.76 5422.11 5281.23 3.209 3.549 0.94 0.09 0.0821 -24.194 4.657 524 5226.6 5525.49 5378.25 4.057 3.549 0.82 0.08 0.0836 -24.607 3.851 534 5315.93 5629.39 5475.26 4.145 3.549 0.97 0.09 0.0795 -24.475 3.736 544 5406.25 5732.43 5572.27 2.761 3.549 1.01 0.09 0.0764 -24.788 3.648 554 5493.96 5836.29 5669.29 4.195 3.549 0.95 0.09 0.0812 -24.134 4.075 563 5574.19 5930.87 5756.6 4.282 3.549 0.94 0.09 0.0821 -24.556 3.727 572 5654.52 6026.09 5843.91 3.687 3.549 0.97 0.1 0.0884 -24.209 4.413 582.5 5746.38 6136.3 5945.78 3.577 3.549 1.02 0.1 0.0840 -24.398 3.953 592 5829.65 6237.79 6037.94 4.363 4.111 1.01 0.1 0.0849 -23.915 4.569 603 5925.72 6352.8 6144.65 5.461 4.111 0.9 0.09 0.0857 -24.374 4.493 613 6012.61 6459.12 6241.67 3.096 4.111 0.96 0.09 0.0804 -24.536 4.124 622 6091.08 6555.21 6328.98 4.228 4.111 0.97 0.09 0.0795 -24.807 4.341 632 6177.47 6660.74 6425.99 3.800 4.111 0.89 0.09 0.0867 -24.244 4.576 643 6272.85 6777.5 6532.71 4.454 4.111 1.06 0.09 0.0728 -24.622 4.329 652.5 6566.01 7176.67 6865.2 4.758 4.111 0.91 0.08 0.0754 -24.810 3.722 663 6704.28 7214.52 6948.95 3.888 4.111 0.99 0.1 0.0866 -24.327 4.579 672.5 6797.57 7265.77 7024.73 3.890 4.111 0.86 0.09 0.0897 -24.502 4.214 682.5 6869.64 7345.04 7104.49 5.971 4.111 0.88 0.08 0.0779 -24.460 3.912 692.5 6918.69 7452.13 7184.26 3.241 4.111 0.91 0.09 0.0848 -24.354 4.272 703 6950.37 7592.21 7264.02 3.634 4.111 1.01 0.1 0.0849 -24.448 4.519 711.5 6975.43 7722.95 7331.82 3.941 4.111 0.92 0.09 0.0839 -24.414 4.589