# Deep-Sea Coral Global Trace Metal Data #----------------------------------------------------------------------- # World Data Service for Paleoclimatology, Boulder # and # NOAA Paleoclimatology Program # National Centers for Environmental Information (NCEI) #----------------------------------------------------------------------- # Template Version 2.0 # 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: http://www.ncdc.noaa.gov/paleo/study/20347 # Online_Resource: http://www1.ncdc.noaa.gov/pub/data/paleo/coral/anagnostou2011elem.txt # # Archive: Corals and Sclerosponges # # Parameter_Keywords: trace metals #--------------------------------------- # Contribution_Date # Date: 2016-07-18 #--------------------------------------- # Title # Study_Name: Deep-Sea Coral Global Trace Metal Data #--------------------------------------- # Investigators # Investigators: Anagnostou, E.; Sherrell, R. #--------------------------------------- # Description and Notes # Description: Calibration of P/Ca, Ba/Ca, and U/Ca in the deep-sea coral Desmophyllum dianthus. # Provided Keywords: coral, deep-sea coral, trace metals, proxy, calibration, paleoceanography #--------------------------------------- # Publication # Authors: Eleni Anagnostou, Robert M. Sherrell, Alex Gagnon, Michele LaVigne, M. Paul Field, William F. McDonough # Published_Date_or_Year: 2011-05-01 # Published_Title: Seawater nutrient and carbonate ion concentrations recorded as P/Ca, Ba/Ca, and U/Ca in the deep-sea coral Desmophyllum dianthus # Journal_Name: Geochimica et Cosmochimica Acta # Volume: 75 # Edition: # Issue: 9 # Pages: 2529-2543 # Report Number: # DOI: 10.1016/j.gca.2011.02.019 # Online_Resource: http://www.sciencedirect.com/science/article/pii/S0016703711000986 # Full_Citation: # Abstract: As paleoceanographic archives, deep sea coral skeletons offer the potential for high temporal resolution and precise absolute dating, but have not been fully investigated for geochemical reconstructions of past ocean conditions. Here we assess the utility of skeletal P/Ca, Ba/Ca and U/Ca in the deep sea coral D. dianthus as proxies of dissolved phosphate (remineralized at shallow depths), dissolved barium (trace element with silicate-type distribution) and carbonate ion concentrations, respectively. Measurements of these proxies in globally distributed D. dianthus specimens show clear dependence on corresponding seawater properties. Linear regression fits of mean coral Element/Ca ratios against seawater properties yield the equations: P/Cacoral (umol/mol) = (0.6 +/- 0.1) P/Casw(umol/mol) - (23 +/- 18), R2 = 0.6, n = 16 and Ba/Cacoral(umol/mol) = (1.4 +/- 0.3) Ba/Casw(umol/mol) + (0 +/- 2), R2 = 0.6, n = 17; no significant relationship is observed between the residuals of each regression and seawater temperature, salinity, pressure, pH or carbonate ion concentrations, suggesting that these variables were not significant secondary dependencies of these proxies. Four D. dianthus specimens growing at locations with Oarag < 0.6 displayed markedly depleted P/Ca compared to the regression based on the remaining samples, a behavior attributed to an undersaturation effect. These corals were excluded from the calibration. Coral U/Ca correlates with seawater carbonate ion: U/Cacoral(umol/mol) = (-0.016 +/- 0.003) [CO32-] (umol/kg) + (3.2 +/- 0.3), R2 = 0.6, n = 17. The residuals of the U/Ca calibration are not significantly related to temperature, salinity, or pressure. Scatter about the linear calibration lines is attributed to imperfect spatial-temporal matches between the selected globally distributed specimens and available water column chemical data, and potentially to unresolved additional effects. The uncertainties of these initial proxy calibration regressions predict that dissolved phosphate could be reconstructed to +/-0.4 umol/kg (for 1.3-1.9 umol/kg phosphate), and dissolved Ba to +/-19 nmol/kg (for 41-82 nmol/kg Basw). Carbonate ion concentration derived from U/Ca has an uncertainty of +/-31umol/kg (for 60-120umol/kg CO32-). The effect of microskeletal variability on P/Ca, Ba/Ca, and U/Ca was also assessed, with emphasis on centers of calcification, Fe-Mn phases, and external contaminants. Overall, the results show strong potential for reconstructing aspects of water mass mixing and biogeochemical processes in intermediate and deep waters using fossil deep-sea corals. #--------------------------------------- # Funding_Agency # Funding_Agency_Name: US National Science Foundation # Grant: OCE 0752544, OCE 0962260 #--------------------------------------- # Site Information # Site_Name: Global # Location: # Country: # Northernmost_Latitude: 49 # Southernmost_Latitude: -55 # Easternmost_Longitude: 179 # Westernmost_Longitude: -172 # Elevation: #--------------------------------------- # Data_Collection # Collection_Name: Anagnostou2011elem # First_Year: 1888 # Last_Year: 1999 # Time_Unit: AD # Core_Length: N/A # Notes: Individual live-collected deep coral specimens from archive collections #--------------------------------------- # Chronology_Information # Chronology: #--------------------------------------- # 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) # ## Coral_ID coral identification number from archive,Desmophyllum dianthus,,,,,,,C ## Coral_Depth Coral collection depth,,,m,,,,,N ## Date_coral_collection Year of coral collection,,,year,,,,,N ## Coral_Lat Coral Latitude,,,degrees N,,,,,N ## Coral_Long Coral Longitude,,,degrees W,,,,,N ## P/Ca_Desmo Coral P/Ca ratios,Desmophyllum dianthus,,umol/mol,,Coral and Sclerosponge,,analytical technique: laser ablation sector field inductively coupled plasma mass spectroscopy,N ## P/Ca_err(+/-1SD) Coral P/Ca ratios standard deviation replicate analyses,Desmophyllum dianthus,1 standard deviation of replicates,umol/mol,,Coral and Sclerosponge,,analytical technique: laser ablation sector field inductively coupled plasma mass spectroscopy,N ## Ba/Ca_Desmo Coral Ba/Ca ratios,Desmophyllum dianthus,,umol/mol,,Coral and Sclerosponge,,analytical technique: laser ablation sector field inductively coupled plasma mass spectroscopy,N ## Ba/Ca_err(+/-1SD) Coral Ba/Ca ratios,Desmophyllum dianthus,1 standard deviation of replicates,umol/mol,,Coral and Sclerosponge,,analytical technique: laser ablation sector field inductively coupled plasma mass spectroscopy,N ## U/Ca_Desmo Coral U/Ca ratios,Desmophyllum dianthus,,umol/mol,,Coral and Sclerosponge,,analytical technique: laser ablation sector field inductively coupled plasma mass spectroscopy,N ## U/Ca_err(+/- 1SD) Coral U/Ca ratios,Desmophyllum dianthus,1 standard deviation of replicates,umol/mol,,Coral and Sclerosponge,,analytical technique: laser ablation sector field inductively coupled plasma mass spectroscopy,N ## Avg_Reps number of averaged later lines (replicate ablations),,,none,,Coral and Sclerosponge,,analytical technique: laser ablation sector field inductively coupled plasma mass spectroscopy,N ## Ba-sw hydrographic seawater barium concentration,,,nmol/kg,,Other Collections,,,N ## Ba-sw_ref Source of Basw data,,,none,,Other Collections,,,C ## PO4-sw hydrographic seawater phosphate concentration,,,umol/kg,,Other Collections,,,N ## PO4-sw_err(+/-1SD) hydrographic seawater phosphate concentration,,1 standard deviation,umol/kg,,Other Collections,,,N ## PO4-sw_ref Source of PO4-sw data,,,none,,Other Collections,,,C ## CO32-sw hydrographic seawater carbonate ion concentration,,,umol/kg,,Other Collections,,CO2sys,N ## CO32-sw_err(+/-1SD) hydrographic seawater carbonate ion concentration,,1 standard deviation,umol/kg,,Other Collections,,CO2sys,N ## CO32-sw_ref Source of CO32- data,,,none,,Other Collections,,,C # #------------------------ # Data # Data lines follow (have no #) # Data line format - tab-delimited text, variable short name as header # Missing Value: -999 # Coral_ID Coral_Depth Date_coral_collection Coral_Lat Coral_Long P/Ca_Desmo P/Ca_err(+/-1SD) Ba/Ca_Desmo Ba/Ca_err(+/-1SD) U/Ca_Desmo U/Ca_err(+/- 1SD) Avg_Reps Ba-sw Ba-sw_ref PO4-sw PO4-sw_err(+/-1SD) PO4-sw_ref CO32-sw CO32-sw_err(+/-1SD) CO32-sw_ref 80358 1967 358 48 8 27.40 -999 5.64 0.03 0.85 0.01 1 (1) for P/Ca, 1 (3) for rest 44 Chan et al. 1977 0.6 0.1 Talley, Lynne (WOCE 1997) 149 -999 Talley, Lynne (WOCE 1997) 48739 1973 825 48 7 63.37 2.52 6.29 0.08 1.64 0.03 1 (4) 47 Chan et al. 1977 1.1 0.0 Talley, Lynne (WOCE 1997) 126 -999 Talley, Lynne (WOCE 1997) 48473 1973 1108 48 8 26.69 2.22 6.43 0.34 0.78 0.05 1 (4) 47 Chan et al. 1977 1.1 0.0 Talley, Lynne (WOCE 1997) 122 -999 Talley, Lynne (WOCE 1997) 48740 1973 1470 49 11 55.38 2.18 12.12 0.17 1.13 0.07 1 (3) 56 Chan et al. 1977 1.2 0.0 Talley, Lynne (WOCE 1997) 112 -999 Talley, Lynne (WOCE 1997) 47407 1964 549 -55 130 114.46 8.34 10.40 0.68 0.93 0.10 3 (4) for Ba/Ca, 2 (4) for P/Ca, U/Ca 54 Ostland et al. 1987 1.6 0.5 Swift, James (WOCE 1992) 113 -999 Swift, James (WOCE 1992) 47409 1966 673 -54 39 75.93 6.70 10.12 0.10 2.13 0.08 1 (3) 83 Chan et al. 1977 2.2 0.0 Wanninkhof, Rik Doney, Scott C. (WOCE 2005) 76 -999 Wanninkhof, Rik Doney, Scott C. (WOCE 2005) 84820 1986 806 0 92 47.75 2.80 12.58 0.40 2.01 0.15 2 (1) 100 Ostland et al. 1987 3.0 0.1 Talley, Lynne (WOCE 1993) 30 -999 Talley, Lynne (WOCE 1993) 19249 1889 274 34 120 117.57 7.46 7.87 0.52 2.04 0.14 1 (3) and 1 (4) 48 Ostland et al. 1987 2.0 0.3 Swift, James (WOCE 2004) 68 8 Swift, James (WOCE 2004) 62309 1979 522 40 68 37.71 10.13 7.30 0.27 1.32 0.08 3 (3) 43 Chan et al. 1977 1.4 0.0 Joyce, Terrence M. (WOCE 1997) 105 -999 Joyce, Terrence M. (WOCE 1997) 83583 1986 459 33 128 81.34 -999 11.71 -999 2.33 -999 1 (1) 68 Ostland et al. 1987 2.8 0.1 Swift, James (WOCE 2004) 44 1 Swift, James (WOCE 2004) 47413 1964 421 -51 -168 78.29 -999 8.92 -999 1.79 -999 1 (1) 48 Jacquet et al. 2004 1.5 0.2 Bullister, John L. (WOCE 1996) 117 -999 Bullister, John L. (WOCE 1996) 84818 1986 402 0 90 64.69 0.53 18.65 0.23 3.00 0.09 1 (3) -999 -999 2.7 0.1 Talley, Lynne (WOCE 1993) 36 -999 Talley, Lynne (WOCE 1993) 94069 1993 710 -31 179 61.30 2.53 7.69 0.18 1.76 0.07 2 (3) 52 Ostland et al. 1987 1.6 0.2 Fukasawa, Masao (WOCE 2003) 104 -999 Fukasawa, Masao (WOCE 2003) 47408 -999 713 -49 -165 97.38 8.19 8.77 0.30 1.46 0.05 1 (4) -999 -999 1.9 0.2 Rintoul, Stephen R. (WOCE 1993) -999 -999 -999 80207 1967 913 -47 -148 105.16 59.34 11.25 0.52 1.35 0.38 2 (3) 69 Jacquet et al. 2004 2.2 0.2 Rintoul, Stephen R. (WOCE 1993) -999 -999 -999 19168 1888 636 -52 74 66.15 4.88 8.61 0.05 1.84 0.05 1 (3) 78 Chan et al. 1977 1.9 0.1 Talley, Lynne (WOCE 1993) 97 1 Talley, Lynne (WOCE 1993) 78630 1982 312 47 131 38.10 2.91 7.86 0.22 2.00 0.11 2 (3) 62 Ostland et al. 1987 2.4 0.1 Talley, Lynne (WOCE 1985) 42 5 Garrett, John F. (WOCE 1994) 82065 1964 586 -55 130 67.85 2.42 12.91 0.01 1.77 0.05 1 (3) 77 Jacquet et al. 2004 1.4 0.6 Swift, James (WOCE 1992) 112 -999 Swift, James (WOCE 1992) 45669 1963 439 -56 66 101.62 6.99 8.48 0.14 1.43 0.05 1 (3) 76 Chan et al. 1977 2.3 0.5 Ostland et al. 1987 (GEOSECS) -999 -999 -999 Z9725 1999 276 -45 -172 47.91 1.27 5.69 0.27 1.23 0.06 1 (3) 51 Ostland et al. 1987 1.2 0.1 Bullister, John L. (WOCE 1996) 117 -999 Bullister, John L. (WOCE 1996)