# Deep Sea Coral Global Boron Isotope 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/20348 # Online_Resource: http://www1.ncdc.noaa.gov/pub/data/paleo/coral/anagnostou2012boron.txt # # Archive: Corals and Sclerosponges # # Parameter_Keywords: trace metals #--------------------------------------- # Contribution_Date # Date: 2016-07-18 #--------------------------------------- # Title # Study_Name: Deep Sea Coral Global Boron Isotope Data #--------------------------------------- # Investigators # Investigators: Anagnostou, E.; Sherrell, R. #--------------------------------------- # Description and Notes # Description: Calibration of boron isotopes in the deep-sea coral Desmophyllum dianthus. # Provided Keywords: coral, deep-sea coral, trace metals, proxy, calibration, paleoceanography #--------------------------------------- # Publication # Authors: E. Anagnostou, K.-F. Huang, C.-F. You, E.L. Sikes, R.M. Sherrell # Published_Date_or_Year: 2012-10-01 # Published_Title: Evaluation of boron isotope ratio as a pH proxy in the deep sea coral Desmophyllum dianthus: Evidence of physiological pH adjustment # Journal_Name: Earth and Planetary Science Letters # Volume: 349-350 # Edition: # Issue: # Pages: 251-260 # Report Number: # DOI: 10.1016/j.epsl.2012.07.006 # Online_Resource: # Full_Citation: # Abstract: The boron isotope ratio (d11B) of foraminifers and tropical corals has been proposed to record seawater pH. To test the veracity and practicality of this potential paleo-pH proxy in deep sea corals, samples of skeletal material from twelve archived modern Desmophyllum dianthus (D. dianthus) corals from a depth range of 274-1470 m in the Atlantic, Pacific, and Southern Oceans, ambient pH range 7.57-8.05, were analyzed for d11B. The d11B values for these corals, spanning a range from 23.56 to 27.88, are found to be related to seawater borate d11B by the linear regression: d11Bcoral=(0.76+/-0.28) d11Bborate+(14.67+/-4.19) (1 standard error (SE)). The D. dianthus d11B values are greater than those measured in tropical corals, and suggest substantial physiological modification of pH in the calcifying space by a value that is an inverse function of seawater pH. This mechanism partially compensates for the range of ocean pH and aragonite saturation at which this species grows, enhancing aragonite precipitation and suggesting an adaptation mechanism to low pH environments in intermediate and deep waters. Consistent with the findings of Trotter et al. (2011) for tropical surface corals, the data suggest an inverse correlation between the magnitude of a biologically driven pH offset recorded in the coral skeleton, and the seawater pH, described by the equation: DpH=pH recorded by coral-seawater pH=-(0.75+/-0.12) pHw+(6.88+/-0.93) (1 SE). Error analysis based on 95% confidence interval(CI) and the standard deviation of the regression residuals suggests that the uncertainty of seawater pH reconstructed from d11Bcoral is +/-0.07 to 0.12 pH units. This study demonstrates the applicability of d11B in D. dianthus to record ambient seawater pH and holds promise for reconstructing oceanic pH distribution and history using fossil corals. #--------------------------------------- # Funding_Agency # Funding_Agency_Name: US National Science Foundation # Grant: 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: Anagnostou2012boron # 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 numbering,Desmophyllum dianthus,,,,,,,N ## Coral_Depth collection depth of corals,,,m,,,,,N ## Coral_Lat latitude,,,degrees North,,,,,N ## Coral_Long longitude,,,degrees West,,,,,N ## Date_coral_collection Year of coral collection,,,AD,,,,,N ## weight coralsubsample weight use for boron isotope analysis,,,mg,,,,,N ## d11B boron isotopes in coral skeleton,,, permil,,,,multi collector inductively coupled plasma mass spectrometry (Neptune) with microsublimation,N ## d11Berr 2*d11B range about the mean,,error,permil,,,,multi collector inductively coupled plasma mass spectrometry (Neptune) with microsublimation,N ## DpH pH indicated by d11B minus pH In seawater,,,none,,,,,N ## DpH_err error in (pH indicated by d11B minus pH In seawater),,,none,,,,,N ## Date_hydrogr year hydrographic data collected,,,AD,,,,,N ## WOCE_line Hydrographic section number from WOCE program,,,none,,,,,C ## Station hydrographic station number on WOCE section,,,none,,,,,C ## Salinity hydrographic salinity,,,none,,,,,N ## Temp hydrographic temperature,,,C,,,,,N ## pHw hydrographic pH,,,total scale,,,,,N ## pH_err hydrographic pH error,,,none,,,,,N ## Oarag hydrographic aragonite saturation,,,none,,,,,N ## Total_alk hydrographic total alkalinity,,,ueq/kg,,,,,N ## TCO2 hydrographic total dissolve inorganic carbon concentration,,,umol/kg,,,,,N ## pKB dissociation constant of boric acid and borate ion,,,none,,,,,N ## d11B(OH)4- boron isotopic composition of seawater borate ion,,, permil,,,,,N ## Repl_samp_wt mass of resampled coral; when no mass is indicated but values are reported they refer to subsampling of the initial solid aliquot or replicate of dissolved sample,,,mg,,,,,N ## Repl_samp_d11B boron isotopes in coral skeleton,,, permil,,,,multi collector inductively coupled plasma mass spectrometry (Neptune) with microsublimation,N ## Repl_samp_d11B_err 2*d11B range about the mean,,, permil,,,,multi collector inductively coupled plasma mass spectrometry (Neptune) with microsublimation,N ## d11B_offset offset in boron isotopes in coral skeleton replicates,,, permil,,,,multi collector inductively coupled plasma mass spectrometry (Neptune) with microsublimation,N ## d11B_avg average of replicate boron isotope measurements in coral skeleton, when determined,,, permil,,,,multi collector inductively coupled plasma mass spectrometry (Neptune) with microsublimation,N # #------------------------ # Data # Data lines follow (have no #) # Data line format - tab-delimited text, variable short name as header # Missing Value: -999 # Coral_ID Coral_Depth Coral_Lat Coral_Long Date_coral_collection weight d11B d11Berr DpH DpH_err Date_hydrogr WOCE_line Station Salinity Temp pHw pH_err Oarag Total_alk TCO2 pKB d11B(OH)4- Repl_samp_wt Repl_samp_d11B Repl_samp_d11B_err d11B_offset d11B_avg 80358 358 48.0 7.9 1967 17.1 26.01 0.18 0.71 0.02 1997 A24 33 35.54 11.0 8.05 0.01 2.1 2336 2129 8.75 16.49 -999 25.61 0.05 0.40 25.81 48739 825 47.6 7.3 1973 32.1 28.13 0.15 0.91 0.02 1997 A24 32 35.53 9.5 7.98 0.01 1.6 2344 2172 8.74 15.96 -999 27.64 0.06 0.49 27.88 48473 1107 47.7 8.1 1973 34.8 26.15 0.02 0.80 0.02 1997 A24 32 35.55 8.4 7.97 0.01 1.5 2348 2182 8.74 15.89 -999 25.97 0.28 0.17 26.06 48740 1470 48.7 10.9 1973 28.2 26.99 0.05 0.86 0.00 1997 A24 32 35.12 5.0 7.99 0.00 1.3 2324 2169 8.76 15.84 -999 -999 -999 -999 -999 47409 673 -54.5 39.4 1966 26.8 26.63 0.09 1.04 0.01 2005 A16S 19 34.66 1.7 7.89 0.01 1.0 2347 2260 8.85 14.61 14.7 26.82 0.21 0.02 26.69 19249 274 34.0 119.5 1889 107.9 25.89 0.00 1.06 0.05 2001 P02 171 34.04 8.1 7.76 0.05 1.0 2264 2196 8.79 14.25 10.6 26.08 0.24 0.19 25.95 62309 522 40.4 67.7 1979 61.8 26.02 0.02 0.86 0.04 1997 A22 73 35.05 6.1 7.97 0.04 1.4 2317 2179 8.80 15.43 -999 25.82 0.03 0.20 25.92 83583 464 32.9 127.8 1986 58.3 24.95 0.24 1.20 0.08 2004 P02 165 34.20 6.3 7.57 0.08 0.6 2293 2284 8.81 13.45 24.4 25.04 0.20 0.09 24.98 47413 421 -50.6 -167.6 1964 78.1 26.81 0.24 0.85 0.02 1996 P15S 66 34.25 5.9 8.04 0.02 1.6 2284 2124 8.81 15.85 17.5 26.89 0.19 0.08 26.83 94069 710 -30.5 178.7 1993 28.7 27.48 0.24 0.96 0.02 2003 P06W 191 34.49 7.3 7.95 0.00 1.4 2284 2146 8.78 15.44 12.8 27.89 0.22 0.41 27.62 78630 312 46.8 130.8 1982 20.9 23.56 0.01 1.08 0.05 2008 P12 138 33.91 5.4 7.58 0.05 0.6 2259 2248 8.83 13.52 -999 -999 -999 -999 -999 Z9725 276 -45.2 -171.6 1999 36.1 26.32 0.09 0.83 0.01 1996 P15S 77 34.51 8.1 8.00 0.01 1.7 2288 2130 8.78 15.77 -999 -999 -999 -999 -999 47407 549 -54.8 129.8 1964 41.1 24.96 0.13 -999 -999 -999 -999 -999 -999 -999 -999 -999 -999 -999 -999 -999 -999 -999 24.34 0.10 0.62 24.65 84820 806 0.25 91.6 1986 18.7 26.71 0.11 -999 -999 -999 -999 -999 -999 -999 -999 -999 -999 -999 -999 -999 -999 -999 26.74 0.07 0.02 26.72 84818 400 0.07 90.32 1986 61.1 25.87 0.30 -999 -999 -999 -999 -999 -999 -999 -999 -999 -999 -999 -999 -999 -999 -999 26.39 0.12 0.52 26.13 19168 636 -51.87 73.68 1888 79.4 25.91 0.04 -999 -999 -999 -999 -999 -999 -999 -999 -999 -999 -999 -999 -999 -999 -999 -999 -999 -999 -999 82065 586 -54.8 129.8 1964 35.8 25.49 0.08 -999 -999 -999 -999 -999 -999 -999 -999 -999 -999 -999 -999 -999 -999 -999 -999 -999 -999 -999