Venado Cave, Costa Rica Speleothem Stable Isotope Data --------------------------------------------------------------------- NOAA Paleoclimatology Program and World Data Center for Paleoclimatology, Boulder --------------------------------------------------------------------- NOTE: PLEASE CITE ORIGINAL REFERENCE WHEN USING THIS DATA!!!!! NAME OF DATA SET: Venado Cave, Costa Rica Speleothem Stable Isotope Data LAST UPDATE: 10/2004 (Original Receipt by WDC Paleo) CONTRIBUTOR: Matthew Lachniet, University of Nevada, Las Vegas IGBP PAGES/WDCA CONTRIBUTION SERIES NUMBER: 2004-060 SUGGESTED DATA CITATION: Lachniet, M.S., et al.. 2004. Venado Cave, Costa Rica Speleothem Stable Isotope Data. IGBP PAGES/World Data Center for Paleoclimatology Data Contribution Series #2004-060. NOAA/NGDC Paleoclimatology Program, Boulder CO, USA. ORIGINAL REFERENCE: Lachniet, M.S., Y. Asmerom, S.J. Burns, W.P. Patterson, V. Polyak, and G.O. Seltzer. 2004. Tropical response to the 8200 yr B.P. cold event? Speleothem isotopes indicate a weakened early Holocene monsoon in Costa Rica. Geology, vol. 32, No. 11, pp. 957–960. doi: 10.1130/G20797.1 GEOGRAPHIC REGION: Central America PERIOD OF RECORD: 8800-4950 yr B.P. ABSTRACT: A delta 18O monsoon rainfall proxy record from a U-Th-dated Costa Rican stalagmite (8840-4920 yr B.P.) documents an early Holocene dry period correlative with the high-latitude 8200 yr B.P. cold event. High delta 18O values between ca. 8300 and 8000 yr B.P. demonstrate reduced rainfall and a weaker monsoon in Central America. A relatively wetter and more stable monsoon was established at ca. 7600 yr B.P. The early Holocene dry event suggests a tropical-extratropical teleconnection to the 8200 yr B.P. cold event and a possible association of isthmian rainfall anomalies with high-latitude climate changes. The likely source of such a tropical anomaly is a decrease in Atlantic thermohaline circulation and atmospheric perturbations associated with drainage of proglacial lakes and freshwater discharge into the North Atlantic. A weaker monsoon at 8200 yr B.P. may be linked to wetland contraction and a decrease in methane observed in Greenland ice cores. DESCRIPTION: Stable oxygen and carbon isotopes from a U-Th-dated stalagmite from Venado Cave, Costa Rica, 10.6N, 84.8W, 380m. elevation. DATA: Column 1: Distance from base (mm) Column 2: Age (yr BP, 1950 AD) Column 3: d18O (permil VPDB) Column 4: d13C (permil VPDB) Dist. Age d18O d13C 0 8806.4 -6 -10.75 1 8769.5 -5.95 -10.83 2 8733.6 -5.74 -10.73 3 8698.6 -5.58 -11.09 4 8664.6 -5.82 -10.73 6 8599.4 -5.23 -10.46 7 8568 -5.8 -10.77 8 8537.6 -5.51 -11.17 8 8537.6 -5.89 -10.51 9 8507.9 -6.07 -10.81 10 8479 -5.84 -10.63 11 8450.9 -5.98 -11.14 12 8423.5 -6.11 -11.24 12 8423.5 -5.94 -11.26 13 8396.9 -5.94 -11.35 14 8370.9 -5.71 -11.49 15 8345.6 -5.51 -11.37 16 8320.9 -5.31 -8.67 16 8320.9 -5.61 -11.57 17 8296.9 -5.9 -11.58 18 8273.4 -5.98 -11.3 19 8250.6 -5.09 -9.48 19 8250.6 -6.08 -10.77 19.5 8239.4 -4.82 -9.45 20 8228.3 -4.92 -9.57 20 8228.3 -5.45 -11.22 20 8228.3 -5.92 -10.44 20.5 8217.3 -4.96 -9.83 21 8206.5 -5.86 -10.33 21 8206.5 -5.02 -9.59 21 8206.5 -5.68 -10.12 21.5 8195.9 -5.63 -8.63 21.5 8195.9 -5.01 -9.46 22 8185.3 -5.95 -7.35 22 8185.3 -5.23 -9.85 22 8185.3 -5.45 -9.47 22.5 8174.9 -5.37 -10.16 23 8164.6 -5.17 -9.75 23 8164.6 -5.34 -8.08 23.5 8154.4 -5.45 -10 24 8144.3 -5.31 -9.57 24 8144.3 -4.99 -8.28 24 8144.3 -5.32 -8.54 24.5 8134.3 -4.99 -8.86 25 8124.5 -5 -9.23 25 8124.5 -4.59 -8.53 25.5 8114.8 -4.68 -7.38 25.5 8114.8 -5.04 -9.64 26 8105.2 -4.75 -7.55 26 8105.2 -5.07 -10.89 26 8105.2 -4.93 -9.11 26.5 8095.6 -4.7 -7.84 26.5 8095.6 -4.78 -10.17 27 8086.2 -4.46 -7.6 27 8086.2 -4.64 -9.34 27 8086.2 -4.86 -6.84 27.5 8076.9 -4.62 -8.66 28 8067.7 -5.01 -7.54 28 8067.7 -4.94 -9.29 28 8067.7 -3.76 -8.39 28 8067.7 -4.38 -7.07 28.5 8058.6 -4.7 -7.22 28.5 8058.6 -5 -9.73 29 8049.6 -4.93 -7.61 29 8049.6 -5.39 -10.16 29 8049.6 -4.42 -6.89 29.5 8040.7 -5.4 -8.38 29.5 8040.7 -5.51 -10.13 30 8031.8 -5.37 -7.88 30 8031.8 -5.73 -10.1 30 8031.8 -5.11 -7.19 30.5 8023.1 -5.59 -9.46 31 8014.4 -5.71 -9.88 31 8014.4 -5.97 -8.5 31.5 8005.9 -6.2 -9.61 31.5 8005.9 -5.71 -10.17 32 7997.4 -5.2 -8.83 32 7997.4 -6 -10.02 32 7997.4 -5.75 -8.67 33 7980.7 -5.47 -9.01 34 7964.3 -5.71 -9.76 34 7964.3 -6.03 -9.5 36 7932.3 -5.53 -7.44 37 7916.8 -5.21 -7.73 38 7901.5 -5.44 -7.05 38 7901.5 -5.81 -6.91 39 7886.4 -5.31 -5.9 40 7871.6 -5.65 -7.65 42 7842.6 -5.31 -6.32 44 7814.3 -5.38 -7.41 46 7786.8 -6.02 -9.74 48 7759.8 -5.85 -10.14 50 7733.4 -4.8 -10.17 52 7707.4 -5.75 -10.51 56 7656.5 -5.9 -9.91 58 7631.4 -6.4 -10.21 60 7606.5 -5.55 -10.43 62 7581.7 -5.92 -10.29 64 7557 -6.6 -11.07 66 7532.4 -6.23 -11.01 68 7507.7 -5.61 -10.02 70 7483 -5.75 -10.66 72 7458.2 -6.39 -10.96 74 7433.3 -5.92 -10.97 76 7408.3 -5.84 -10.56 78 7383.1 -6.32 -10.83 80 7357.7 -5.82 -10.61 82 7332.1 -5.95 -10.45 84 7306.2 -5.97 -10.59 88 7253.8 -6.02 -10.65 90 7227.2 -6.37 -10.48 92 7200.4 -5.74 -9.87 94 7173.3 -6.17 -10.38 96 7145.9 -6.14 -11.09 98 7118.2 -5.77 -10.71 100 7090.3 -6.44 -10.89 102 7062.1 -5.59 -10.99 104 7033.6 -6.46 -11.34 106 7004.8 -5.84 -11.07 110 6946.7 -6.34 -10.4 110 6946.7 -5.89 -10.34 112 6917.2 -6.14 -10.24 114 6887.5 -5.84 -10.19 118 6827.6 -5.79 -10.53 120 6797.4 -6.27 -10.85 122 6767 -5.68 -11.21 124 6736.5 -6.04 -11.4 128 6675.1 -6.48 -11.26 130 6644.3 -5.82 -11.41 132 6613.4 -5.86 -11.7 134 6582.4 -5.89 -11.75 136 6551.5 -5.73 -11.86 138 6520.5 -6.15 -11.88 140 6489.6 -6.4 -11.8 142 6458.7 -6.42 -11.66 144 6427.8 -6.43 -11.7 146 6397.1 -6.38 -12.04 148 6366.4 -5.8 -11.66 150 6335.9 -6.35 -11.4 152 6305.5 -6.48 -11.32 154 6275.3 -6.06 -11.56 156 6245.3 -6.11 -10.52 158 6215.5 -5.61 -11.03 160 6185.9 -6.09 -10.95 162 6156.5 -5.71 -10.8 164 6127.5 -5.82 -11.04 166 6098.7 -5.67 -10.06 168 6070.2 -5.95 -11.07 170 6042.1 -5.6 -10.74 172 6014.3 -5.92 -11.02 174 5986.8 -6.17 -11.03 176 5959.8 -6.23 -11.26 178 5933.1 -5.67 -10.75 180 5906.8 -5.82 -11.57 182 5881 -6.49 -11.15 184 5855.6 -6.55 -11 186 5830.6 -6.07 -11.25 188 5806.1 -5.89 -11.2 190 5782.1 -5.91 -11.22 192 5758.5 -6.46 -11 194 5735.4 -5.93 -11.1 195.5 5718.5 -5.93 -10.96 196 5712.9 -6.04 -11.17 199 5680 -6.09 -10.62 199.5 5674.6 -5.93 -11.03 200 5669.2 -6.45 -11.28 200.5 5663.9 -6.27 -11.53 201 5658.7 -6.22 -11.44 201.5 5653.4 -6.56 -11.56 202 5648.2 -6.2 -11.66 202.5 5643 -6.23 -11.69 203 5637.9 -6.22 -11.56 203.5 5632.8 -6.3 -11.59 204 5627.7 -6.35 -11.49 204 5627.7 -6.35 -11.37 204.5 5622.6 -6.43 -11.28 205 5617.6 -6.59 -11.33 205.5 5612.6 -6.42 -11.37 206 5607.7 -6.3 -11.37 208 5588.2 -6.06 -9.94 210 5569.3 -5.41 -9.85 210.5 5564.7 -5.37 -10.24 211 5560 -5.52 -9.92 211.5 5555.5 -5.76 -10.11 212 5550.9 -5.9 -10.23 212 5550.9 -5.66 -11.66 212.5 5546.4 -5.87 -11.31 213 5541.9 -5.63 -11.44 213.5 5537.5 -6.09 -11.09 214 5533 -5.95 -10.76 214.5 5528.7 -6.2 -11.86 215 5524.3 -6.22 -12.04 215.5 5520 -5.97 -11.48 216 5515.7 -6.08 -11.53 216 5515.7 -6.01 -12.02 216.5 5511.5 -5.72 -11.99 217 5507.2 -5.9 -12.26 217.5 5503 -5.98 -11.94 218 5498.9 -5.89 -12.32 218.5 5494.8 -6.41 -11.94 219 5490.7 -6.44 -11.84 219.5 5486.6 -6.15 -11.73 220 5482.6 -6.14 -11.72 220 5482.6 -6.23 -11.94 220.5 5478.6 -6.34 -11.5 221 5474.7 -6.16 -11.52 221.5 5470.7 -5.82 -11.95 222 5466.9 -5.86 -10.94 224 5451.6 -6.63 -11.41 228 5422.7 -5.51 -11.23 232 5395.7 -6.46 -10.52 236 5370.6 -5.28 -10.6 240 5347.4 -6.22 -10.15 244 5326 -6.1 -11.76 248 5306.2 -6.05 -11.53 252 5287.9 -5.93 -12.05 256 5271 -6.3 -11.58 260 5255.3 -6.11 -11.73 264 5240.8 -6.2 -11.44 268 5227.2 -5.88 -11.21 272 5214.5 -6.1 -11.48 276 5202.4 -5.68 -11.29 280 5190.7 -6.31 -10.94 288 5168.4 -6.01 -11.34 296 5146.1 -6.46 -10.9 300 5134.7 -5.97 -11.4 304 5122.9 -6.85 -11.74 308 5110.7 -6.17 -11.52 312 5097.8 -6.53 -11.33 316 5084.4 -5.88 -12.16 319.52 5072 -6.47 -12.32 319.78 5071 -6.35 -11.76 319.91 5070.6 -6.68 -11.85 320 5070.2 -6.68 -11.92 320.03 5070.1 -6.79 -12.06 320.16 5069.6 -6.79 -11.94 320.42 5068.7 -6.62 -12.04 320.55 5068.2 -6.59 -11.95 320.68 5067.8 -6.52 -11.82 320.94 5066.8 -6.34 -11.76 321 5066.6 -6.44 -11.98 321.07 5066.3 -6.42 -11.8 321.2 5065.9 -6.39 -11.98 321.32 5065.4 -6.34 -11.97 321.45 5064.9 -6.22 -11.89 321.58 5064.4 -6.1 -11.65 321.71 5064 -5.97 -11.76 321.84 5063.5 -5.79 -11.87 321.97 5063 -5.64 -12.05 322 5062.9 -5.81 -12.2 322.1 5062.5 -5.7 -12.13 322.23 5062 -5.86 -12.26 322.49 5061.1 -5.97 -12.43 322.61 5060.6 -6.13 -12.11 322.74 5060.1 -6.18 -12.21 322.87 5059.6 -5.98 -12.14 323 5059.2 -6.34 -11.61 323 5059.1 -6.42 -11.9 323.13 5058.7 -6.49 -11.63 323.26 5058.2 -6.39 -11.58 323.39 5057.7 -6.34 -11.67 323.65 5056.7 -6.37 -11.48 323.78 5056.2 -6.29 -11.67 323.9 5055.7 -6.38 -11.88 324 5055.4 -6.14 -11.69 324 5055.4 -5.99 -11.82 324.03 5055.2 -6.44 -12.06 324.16 5054.8 -6.35 -11.65 324.29 5054.3 -6.18 -11.67 324.42 5053.8 -6.08 -11.56 324.55 5053.3 -5.97 -11.43 324.68 5052.8 -5.91 -11.5 324.81 5052.3 -5.73 -11.66 324.94 5051.8 -5.61 -11.61 325 5051.5 -5.43 -11.6 325.07 5051.3 -5.51 -11.53 325.19 5050.8 -5.51 -11.73 325.32 5050.3 -5.72 -11.48 325.45 5049.8 -5.63 -11.58 325.71 5048.8 -5.72 -11.35 325.84 5048.3 -5.74 -11.7 325.97 5047.8 -5.68 -11.49 326 5047.7 -5.74 -11.33 326.1 5047.3 -5.65 -11.29 326.36 5046.3 -5.48 -11.03 326.48 5045.8 -5.57 -10.78 326.61 5045.3 -5.74 -10.98 326.74 5044.8 -5.89 -11.08 326.87 5044.3 -5.83 -11.11 327 5043.8 -6 -11.15 328 5039.8 -5.86 -11.17 332 5023.6 -5.59 -12.25 336 5006.7 -6.01 -11.98 340 4989.4 -5.98 -11.71 344 4971.7 -5.78 -10.68 348 4953.9 -6.29 -11.42 352 4936.2 -5.98 -10.46