/* DATA DESCRIPTION: Citation: Boulay, Sebastien; Colin, Christophe; Trentesaux, Alain; Frank, Norbert; Liu, Zhifei (2005): Rubidium, Strontium and Neodymium isotopic ratios of the carbonate-free fraction of ODP Site 184-1145 in the South China Sea (Table 2) [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.693988, Supplement to: Boulay, S et al. (2005): Sediment sources and East Asian monsoon intensity over the last 450 ky. Mineralogical and geochemical investigations on South China Sea sediments. Palaeogeography, Palaeoclimatology, Palaeoecology, 228(3-4), 260-277, https://doi.org/10.1016/j.palaeo.2005.06.005 Abstract: A coupled approach based on clay mineral assemblages and isotopic data (Sr and Nd) of sediment from Ocean Drilling Program (ODP) Site 1145 has been used to trace the sources of sediment feeding the northern part of the South China Sea, and to investigate the evolution of East Asian monsoon intensity over the last 450 ky. Clay mineral assemblages are dominated by illite and smectite, with lesser abundance of chlorite and kaolinite. 87Sr / 86Sr and epsilonNd(0) isotopic data, combined with the smectite / (illite+chlorite) ratio, indicate that the Pearl River is the main contributor for detrital material to the northern margin of the SCS, with variable continental input of volcanic material derived from the erosion of the Luzon Arc. These inputs follow the low-latitude solar insolation with a 23 ky periodicity, as recorded by a periodic change of the clay mineralogy. For the first time, this study presents a SCS deep-sea sediment high-resolution record of climatic changes in the last 450 ky, showing that smectite / (illite+chlorite) variations are mainly related to changes in the East Asian summer monsoon intensity. Because the mineralogical record is independent of other external forcing phenomena such as global glacial/interglacial oscillations, the smectite / (illite+chlorite) ratio has been used here as a proxy to reconstruct past changes of the South-East Asian summer monsoon intensity. Project(s): Ocean Drilling Program (ODP) (URI: https://www-odp.tamu.edu:443/) Coverage: LATITUDE: 19.584017 * LONGITUDE: 117.630967 DATE/TIME START: 1999-03-18T00:00:00 * DATE/TIME END: 1999-03-21T00:00:00 MINIMUM DEPTH, sediment/rock: 0.88 m * MAXIMUM DEPTH, sediment/rock: 70.63 m Event(s): 184-1145 * LATITUDE: 19.584017 * LONGITUDE: 117.630967 * DATE/TIME START: 1999-03-18T00:00:00 * DATE/TIME END: 1999-03-21T00:00:00 * ELEVATION: -3175.5 m * PENETRATION: 598.1 m * RECOVERY: 554.7 m * LOCATION: South China Sea (URI: http://en.wikipedia.org/wiki/South_China_Sea) * CAMPAIGN: Leg184 * BASIS: Joides Resolution (URI: https://www-odp.tamu.edu:443/resolutn.html) * METHOD/DEVICE: Composite Core (COMPCORE) * COMMENT: 65 cores; 598.1 m cored; 0 m drilled; 92.7% recovery Parameter(s): DEPTH, sediment/rock [m] (Depth sed) * GEOCODE AGE [ka BP] (Age) * GEOCODE Sample code/label (Sample label) * PI: Boulay, Sebastien * METHOD/DEVICE: DSDP/ODP/IODP sample designation (URI: hdl:10013/epic.27914.d001) Strontium [mg/kg] (Sr) * PI: Boulay, Sebastien * METHOD/DEVICE: Mass spectrometer Finnigan MAT 262 Rubidium [mg/kg] (Rb) * PI: Boulay, Sebastien * METHOD/DEVICE: Mass spectrometer Finnigan MAT 262 Neodymium [mg/kg] (Nd) * PI: Boulay, Sebastien * METHOD/DEVICE: Mass spectrometer Finnigan MAT 262 Rubidium/Strontium ratio (Rb/Sr) * PI: Boulay, Sebastien * METHOD/DEVICE: Mass spectrometer Finnigan MAT 262 Strontium-87/Strontium-86 ratio (87Sr/86Sr) * PI: Boulay, Sebastien * METHOD/DEVICE: Mass spectrometer Finnigan MAT 262 Strontium-87/Strontium-86 ratio, error [±] (87Sr/86Sr e) * PI: Boulay, Sebastien * METHOD/DEVICE: Mass spectrometer Finnigan MAT 262 * COMMENT: 2 sigma Neodymium-143/Neodymium-144 ratio (143Nd/144Nd) * PI: Boulay, Sebastien * METHOD/DEVICE: Mass spectrometer Finnigan MAT 262 Neodymium-143/Neodymium-144 ratio, error [±] (143Nd/144Nd e) * PI: Boulay, Sebastien * METHOD/DEVICE: Mass spectrometer Finnigan MAT 262 * COMMENT: 2 sigma ε-Neodymium (0) (ε-Nd(0)) * PI: Boulay, Sebastien * METHOD/DEVICE: Mass spectrometer Finnigan MAT 262 License: Creative Commons Attribution 3.0 Unported (CC-BY-3.0) (URI: https://creativecommons.org/licenses/by/3.0/) Size: 368 data points */ Depth sed [m] Age [ka BP] Sample label Sr [mg/kg] Rb [mg/kg] Nd [mg/kg] Rb/Sr 87Sr/86Sr 87Sr/86Sr e [±] 143Nd/144Nd 143Nd/144Nd e [±] ε-Nd(0) 0.88 7.6 184-1145C-1H1,68-70 105 159 25 1.52 0.71633 0.00001 0.512099 0.000007 -10.5 1.58 12.5 184-1145C-1H1,138-140 100 110 22 1.10 0.71698 0.00002 0.512080 0.000008 -10.9 3.38 19.7 184-1145C-1H3,18-20 98 165 27 1.69 0.71912 0.00001 0.512067 0.000009 -11.1 4.78 24.5 184-1145C-1H4,8-10 119 125 26 1.05 0.71654 0.00001 0.512082 0.000008 -10.8 6.78 31.3 184-1145C-1H5,58-60 106 149 1.41 0.71742 0.00001 8.58 37.5 184-1145B-2H2,18-20 104 167 27 1.60 0.71786 0.00001 0.512069 0.000006 -11.1 9.78 41.7 184-1145B-2H2,138-140 119 135 25 1.14 0.71487 0.00003 0.512105 0.000008 -10.4 11.58 48.5 184-1145B-2H4,18-20 168 151 0.90 0.71462 0.00006 12.98 55.4 184-1145B-2H5,8-10 103 196 28 1.90 0.72122 0.00001 0.512050 0.000006 -11.5 14.38 61.1 184-1145C-2H3,68-70 106 154 25 1.45 0.71831 0.00001 0.512083 0.000006 -10.8 15.38 65.1 184-1145C-2H4,18-20 101 151 29 1.50 0.72227 0.00001 0.512064 0.000008 -11.2 17.38 74.1 184-1145C-2H5,68-70 105 173 26 1.64 0.71900 0.00001 0.512085 0.000007 -10.8 18.98 84.2 184-1145C-2H6,78-80 100 186 28 1.87 0.72281 0.00001 0.512060 0.000008 -11.3 19.98 90.6 184-1145B-3H2,138-140 114 174 27 1.52 0.71885 0.00002 0.512075 0.000008 -11.0 20.78 95.7 184-1145B-3H3,68-70 109 167 25 1.52 0.71772 0.00001 0.512084 0.000066 -10.8 22.98 109.7 184-1145B-3H4,138-140 113 175 27 1.54 0.71838 0.00002 0.512079 0.000007 -10.9 23.98 118.1 184-1145B-3H5,88-90 120 136 21 1.14 0.71480 0.00003 0.512104 0.000009 -10.4 24.68 126.8 184-1145B-3H6,8-10 109 134 22 1.22 0.71549 0.00001 0.512092 0.000019 -10.7 25.88 138.0 184-1145A-4H2,48-50 138 136 24 0.99 0.71371 0.00007 0.512090 0.000007 -10.7 27.08 147.3 184-1145A-4H3,18-20 105 137 25 1.30 0.71712 0.00001 0.512069 0.000009 -11.1 27.98 154.2 184-1145A-4H3,108-110 109 141 26 1.29 0.71772 0.00001 0.512076 0.000006 -11.0 29.58 161.9 184-1145A-4H4,118-120 117 136 25 1.17 0.71447 0.00001 0.512186 0.000009 -8.8 30.78 165.4 184-1145A-4H5,88-90 107 137 26 1.28 0.71802 0.00001 0.512079 0.000008 -10.9 33.93 174.7 184-1145C-4H3,8-10 106 166 1.57 0.72148 0.00001 36.53 182.3 184-1145C-4H4,118-120 107 174 29 1.63 0.72250 0.00003 0.512048 0.000007 -11.5 38.33 187.6 184-1145C-4H5,148-150 110 158 27 1.44 0.72026 0.00001 0.512079 0.000007 -10.9 40.33 198.3 184-1145B-5H2,118-120 108 146 23 1.36 0.71779 0.00001 0.512079 0.000007 -10.9 42.33 212.5 184-1145B-5H4,18-20 112 173 27 1.55 0.72046 0.00004 0.512052 0.000006 -11.4 43.73 222.4 184-1145B-5H5,8-10 102 171 28 1.67 0.72109 0.00001 0.512064 0.000007 -11.2 45.13 232.3 184-1145B-5H5,148-150 126 137 23 1.09 0.71451 0.00001 0.512099 0.000006 -10.5 47.53 248.2 184-1145C-5H5,108-110 104 166 27 1.59 0.71890 0.00001 0.512039 0.000006 -11.7 49.93 261.5 184-1145B-6H2,58-60 110 147 24 1.34 0.71755 0.00001 0.512046 0.000005 -11.6 51.73 271.6 184-1145B-6H3,88-90 103 186 27 1.80 0.72071 0.00001 0.512057 0.000009 -11.3 52.33 275.1 184-1145B-6H3,148-150 112 165 1.48 0.72010 0.00002 54.43 286.5 184-1145B-6H5,58-60 163 122 20 0.75 0.71137 0.00002 0.512172 0.000009 -9.1 57.83 310.3 184-1145C-6H5,58-60 123 154 26 1.25 0.71617 0.00001 0.512062 0.000006 -11.2 61.03 340.1 184-1145B-7H2,148-150 119 26 0.71649 0.00001 0.512081 0.000008 -10.9 66.43 375.2 184-1145B-7H6,108-110 112 180 1.61 0.71991 0.00001 70.63 409.2 184-1145B-8H3,68-70 126 141 26 1.12 0.71437 0.00001 0.512128 0.000006 -10.0