# Ball Gown Cave, tropical Western Australia, stable isotope delta 18O data #----------------------------------------------------------------------- # World Data Center for Paleoclimatology, Boulder # and # NOAA Paleoclimatology Program #----------------------------------------------------------------------- # NOTE: Please cite Publication, and Online_Resource and date accessed when using these data. If there is no publication information, please cite Investigators, Title, and Online_Resource and date accessed. # # Online_Resource: https://www.ncdc.noaa.gov/paleo-search/study/14648 # Online_Resource: ftp://ftp.ncdc.noaa.gov/pub/data/paleo/speleothem/australia/ballgowncave2013wg14.txt # # Original_Source_URL: # # Description/Documentation lines begin with # # Data lines have no # # # Archive: Speleothem #-------------------- # Contribution_Date # Date: 2013-06-17 #-------------------- # Title # Study_Name: Ball Gown Cave, tropical Western Australia, stable isotope delta 18O data #-------------------- # Investigators # Investigators: Denniston,R.F.;Wyrwoll,K-H.;Asmerom,Y.;Polyak,V.J.;Humphreys,W.F.;Cugley,J.;Woods,D.;LaPointe,Z.;Peota,J.;Greaves,E. #-------------------- # Description_and_Notes # A discontinuous, U-Th-dated, stalagmite oxygen isotopic time series from six stalagmites from Ball Gown Cave, tropical Western Australia. # These data are interpreted as tracking Last Glacial through early Holocene variability in the Indo-Australian summer monsoon. # Note: Data file updated 4/2017. U-Th chronology table added, plus updated age estimates and stalagmite raw depth/distance values. #-------------------- # Publication # Authors: Rhawn F. Denniston, Karl-Heinz Wyrwoll, Yemane Asmerom, Victor J. Polyak, William F. Humphreys, John Cugley, David Woods, Zachary LaPointe, Julian Peota, Elizabeth Greaves # Published_Date_or_Year: 2013 # Published_Title: North Atlantic Forcing of Millennial-Scale Australian Monsoon Variability during the Late Glacial. # Journal_Name: Quaternary Science Reviews # Volume: 72 # Edition: # Issue: # Pages: 159-168 # Report_Number: # DOI: http://dx.doi.org/10.1016/j.quascirev.2013.04.012 # Publication_Place: # Publisher: # ISBN: # Online_Resource: # Other_Reference_Details: # Full_Citation: # Abstract: Recent studies of the Last Glacial period Indo-Australian summer monsoon (IASM) have revealed links to both northern and southern hemisphere high latitude climate as well as to regional ocean conditions. Particular interest has been paid to the monsoon response to Heinrich events, with variability explained by meridional shifts in positioning of the intertropical convergence zone (ITCZ), but this model has not been adequately tested. In addition, the shorter-lived Dansgaard/Oeschger (D/O) events have not been detected (beyond D/O-1, the Bølling/Allerød) in land-based records from the Indo-Pacific, despite their prominent expression in stalagmites from southern Asia, raising questions about the sensitivity of the IASM to these events. Here we present a Southern Hemisphere stalagmite oxygen isotopic time series from Ball Gown Cave (BGC), tropical northern Australia, located on the margins of the modern austral summer ITCZ, that spans 40e31 and 27e8 ka. Elevated IASM rainfall coincides with Heinrich stadials and the Younger Dryas, while decreased rainfall characterizes D/O interstadials, a response that is antiphased with sites spanning the Indo-Pacific Warm Pool and with Chinese records of the East Asian summer monsoon. The BGC time series thus reveals a precipitation dipole consistent with a southward northward) migration of the ITCZ during periods of high northern latitude cooling (warming) as the primary driver of millennial-scale IASM variability during the Last Glacial period. Our record indicates a strengthening of the IASM after the Younger Dryas period, likely as a result of rising sea level and sea surface temperatures, breaking the link with the high latitudes. #------------------ # Funding_Agency # Funding_Agency_Name: US National Science Foundation # Grant: AGS-1103413 #------------------ # Site_Information # Site_Name: Ball Gown Cave # Location: Western Australia # Region: # Country: Australia # Northernmost_Latitude: -17.333333 # Southernmost_Latitude: 124.083333 # Easternmost_Longitude: -17.333333 # Westernmost_Longitude: 124.083333 # Elevation: 100 #------------------ # Data_Collection # Collection_Name: WG14 # Earliest_Year: 24379 # Most_Recent_Year:18496 # Time_Unit: calendar years BP # Core_Length: # Notes: #------------------ # Species: #------------------ # Chronology: # # Age models (distance vs age) were constructed in Excel using either linear interpolation or polynomials, # the latter of which were, in some cases, forced through the data using dummy variables (e.g., artificial dates) # to maintain stratigraphic superposition within each stalagmite. For specifics, please see the original publication. # # # Stalagmite Distance to Top (mm)*a 238U (ng/g) 232Th (pg/g) d234U*b (corr'd) Error*c 230Th/238U (activity) Error 230Th/232Th (ppm) Error Uncorrected Age (yr BP)*d Error (yr) Corrected Age (yr BP)*e Error (yr) # 5 769 31.5 2,427 339.1 2.3 0.2972 0.004 63.6 1.4 27,690 400 26,000 1,730 # 5 727 24.2 2,901 349.6 3 0.3036 0.004 41.9 0.7 28,110 440 25,500 2,650 # 5 463 31 581 345.5 1.6 0.2807 0.003 247 13.2 25,820 290 25,420 500 # 5 435 29.3 886 359.2 1.9 0.2923 0.004 159.7 47.4 26,730 450 26,090 790 # 5 361 29.5 2,916 367.8 3.7 0.3036 0.003 50.7 0.9 27,690 360 25,570 2,150 # 5 297 23.7 999 359.5 2.2 0.3057 0.005 119.8 5 28,130 510 27,230 1,040 # 6 674 41.2 3,064 356.5 2.4 0.0975 0.004 21.7 1 8,160 340 6,550 1,640 # 6 664 45.5 5,129 364.1 3 0.1029 0.003 14.7 0.4 8,575 250 6,070 2,510 # 6 649 51.6 5,081 350.2 2.5 0.1107 0.001 18.6 0.2 9,364 120 7,220 2,140 # 6 565 134.5 7,996 367.1 1.9 0.1303 0.001 36.2 0.3 10,980 70 9,710 1,270 # 6 526 33.1 1,467 363.2 1.9 0.1391 0.003 51.7 1.7 11,800 270 10,850 990 # 6 496 41 1,667 374.5 1.9 0.1422 0.004 57.7 2.8 11,980 330 11,110 920 # 6 484 56.3 5,341 372.1 2.8 0.1509 0.004 426.3 0.7 12,770 320 10,740 2,050 # 6 472 90.3 1,523 373.7 1.5 0.1396 0.002 136.6 6.8 11,750 190 11,390 410 # 6 463 54.2 7,104 371.3 3.4 0.1634 0.003 20.6 0.4 13,900 270 11,090 2,830 # 6 423 143.2 16,113 367.5 2.9 0.1655 0.001 24.3 0.2 14,140 110 11,720 2,420 # 6 356 33.4 2,564 372.6 2.7 0.1641 0.004 35.3 1.2 13,970 400 12,330 1,680 # 6 255 Isochron - see below 15,100 1,500 # 6 – iso 1 255 278 264,209 377.1 4 0.3286 0.001 5.7 0.02 29,750 140 15,200 3,480 # 6 – iso 2 255 166.3 129,450 357.5 5.7 0.2888 0.001 6.1 0.03 26,140 140 15,020 5,430 # 6 – iso 3 255 156.5 46,373 370 3.4 0.2233 0.001 12.4 0.1 19,460 140 13,590 2,900 # 6 – iso 4 255 155.1 31,517 378.1 1.6 0.2105 0.002 17.1 0.2 18,200 160 17,760 270 # 6 – iso 5 255 171.3 66,900 374.3 1.6 0.2314 0.001 9.8 0.1 20,260 130 19,410 440 # 6 33 26.2 1,115 376.1 3.1 0.2035 0.005 79 3.4 17,590 430 16,690 1,000 # 10 602 39.5 492 390.2 3.1 0.3902 0.003 517.2 40.8 36,610 340 36,350 430 # 10 546 40.3 120 384.1 1.5 0.4026 0.002 2,226.70 483 38,230 280 38,170 290 # 10 431 50.6 219 388.9 1.5 0.4123 0.002 1,575.40 141.4 39,200 210 39,110 230 # 10 315 69.9 1,756 393.6 1.6 0.4135 0.001 271.8 2.7 39,170 160 38,640 550 # 11 151 50.7 4,113 431.7 2.8 0.1478 0.005 30.1 84.9 11,940 440 10,290 1,720 # 11 113 73.9 7,052 452.3 2.9 0.1452 0.002 25.1 56.7 11,550 170 9,620 1,930 # 11 91 70.7 2,623 466.7 1.8 0.1376 0.001 61.2 0.7 10,810 80 10,070 740 # 14 139 32.8 4,011 630.6 5.2 0.2825 0.004 38.2 0.7 20,990 330 18,790 2,220 # 14 89 21.1 799 554.9 3.5 0.2937 0.012 128.2 16.7 23,150 1,030 22,440 1,260 # 14 72 30.5 937 597.2 2.1 0.2932 0.004 157.7 7.1 22,430 310 21,870 640 # 14 63 22.2 1,102 559 3.6 0.2836 0.004 94.5 3.1 22,190 350 21,260 990 # 14 8 35.9 1,536 549.4 3.4 0.3092 0.007 119.5 7.3 24,630 590 23,820 1,000 # 16 819 37 1,267 387.6 2.3 0.3554 0.003 171.2 4.9 32,790 320 32,070 790 # 16 724 40.4 390 380.1 1.9 0.3584 0.003 612.5 58.7 33,350 290 33,140 360 # 16 506 42.4 2,180 390.6 2 0.4023 0.005 129.1 3.2 37,960 570 36,870 1,220 # 16 339 69.7 2,338 386.6 1.7 0.3771 0.001 185.7 2.1 35,230 150 34,520 720 # 16 187 40 456 387.2 1.6 0.3952 0.004 572.5 49.3 37,280 420 37,040 480 # # *a Distances are relative to the base of the stalagmite. # *b d234Umeas’d = [(234U/238U)meas'd/(234U/238U)eq-1] x 103, where (234U/238U)eq is secular equilibrium activity ratio: L238/L234 = 1.0. Values are reported as permil. # *c Errors are at the 2sigma level. # *d Present is defined as the year AD 1950. # *e Initial 230Th/232Th atomic ratio of 4.4 x 10-6 ± 50% used to correct for unsupported 230Th. # #---------------- # Variables # ## depth_mm distance from stalagmite base, , , mm, , , , ,N ## age_calBP Age,,,,calendar years BP,,reference period: 8370-40100 yr_BP,,N ## d18OcarbVPDB delta 18O,calcium carbonate,,,per mil VPDB,speleothem,,,N #---------------- # Data # Missing_Values: # # Data line format - tab-delimited text, variable short name as header depth_mm age_calBP d18OcarbVPDB 0 24379 -3.26 2 24204 -5.10 4 24037 -4.26 6 23878 -2.93 8 23726 -2.35 10 23582 -3.45 12 23445 -3.73 14 23315 -3.03 16 23192 -3.51 18 23075 -2.90 20 22965 -3.28 22 22860 -2.37 24 22762 -2.25 26 22670 -2.27 28 22582 -2.82 30 22500 -1.49 32 22424 -2.06 34 22352 -0.72 36 22284 -2.93 38 22221 -2.32 40 22162 -3.26 42 22107 -2.48 44 22056 -2.40 46 22008 -2.99 48 21964 -3.38 50 21923 -3.32 52 21884 -3.29 54 21849 -4.13 56 21815 -2.62 58 21784 -3.75 60 21755 -3.63 62 21728 -2.91 64 21702 -2.99 66 21678 -3.15 68 21655 -3.58 70 21633 -3.72 72 21611 -4.25 74 21590 -2.86 76 21570 -3.27 78 21549 -4.08 80 21528 -3.55 82 21507 -3.05 84 21485 -3.19 86 21463 -2.35 88 21439 -3.68 90 21415 -3.77 92 21388 -3.64 94 21361 -3.25 96 21331 -2.99 98 21299 -1.93 100 21265 -3.48 102 21228 -3.02 104 21189 -3.09 106 21147 -2.98 108 21101 -2.37 110 21052 -2.54 112 21000 -2.38 114 20943 -2.74 116 20883 -2.42 118 20819 -2.53 120 20749 -2.63 122 20676 -2.40 124 20597 -3.12 126 20513 -1.01 128 20424 -2.35 130 20330 -2.54 132 20229 -4.12 134 20123 -3.07 136 20010 -3.78 138 19891 -4.00 140 19766 -3.54 142 19633 -2.70 144 19494 -3.92 146 19347 -2.89 148 19193 -1.39 150 19031 -1.82 152 18861 -2.07 154 18683 -1.10 156 18496 -1.30