# Mairs Cave, Southern Australia 23-15 KYrBP Speleothem Stable Isotope Data #----------------------------------------------------------------------- # World Data Service for Paleoclimatology, Boulder # and # NOAA Paleoclimatology Program # National Centers for Environmental Information (NCEI) #----------------------------------------------------------------------- # Template Version 3.0 # Encoding: UTF-8 # 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/study/22074 # Description: # Online_Resource: https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/australia/mairs2017mc-s1.txt # Description: # # Original_Source_URL: # Description: # # Description/Documentation lines begin with # # Data lines have no # # # Archive: Speleothems # # Dataset DOI: # # Parameter_Keywords: carbon isotopes, oxygen isotopes #-------------------- # Contribution_Date # Date: 2017-05-10 #-------------------- # File_Last_Modified_Date # Date: 2017-05-10 #-------------------- # Title # Study_Name: Mairs Cave, Southern Australia 23-15 KYrBP Speleothem Stable Isotope Data #-------------------- # Investigators # Investigators: Treble, P.C.; Baker, A.; Ayliffe, L.K.; Cohen, T.C.; Hellstrom, J.C.; Gagan, M.K.; Frisia, S.; Drysdale, R.N.; Griffiths, A.D.; Borsato, A. #-------------------- # Description_Notes_and_Keywords # Description: Two U-series age dated speleothem records for Mairs Cave, Flinders Ranges, southern Australia. Data span 23-15 ka. # Provided Keywords: speleothem, Mairs Cave, Southern Australia, Heinrich Stadial 1, Last Glacial Maximum, westerly winds, recharge #-------------------- # Publication # Authors: Pauline C. Treble, Andy Baker, Linda K. Ayliffe, Timothy J. Cohen, John C. Hellstrom, Michael K. Gagan, Silvia Frisia, Russell N. Drysdale, Alan D. Griffiths, and Andrea Borsato # Published_Date_or_Year: 2017-06-14 # Published_Title: Hydroclimate of the Last Glacial Maximum and deglaciation in southern Australia's arid margin interpreted from speleothem records (23-15?ka) # Journal_Name: Climate of the Past # Volume: 13 # Edition: # Issue: 6 # Pages: 667-687 # Report_Number: # DOI: 10.5194/cp-13-667-2017 # Online_Resource: http://www.clim-past.net/13/667/2017/ # Full_Citation: # Abstract: Terrestrial data spanning the Last Glacial Maximum (LGM) and deglaciation from the southern Australian region are sparse and limited to discontinuous sedimentological and geomorphological records with relatively large chronological uncertainties. This dearth of records has hindered a critical assessment of the role of the Southern Hemisphere mid-latitude westerly winds on the region's climate during this time period. In this study, two precisely dated speleothem records for Mairs Cave, Flinders Ranges, are presented, providing for the first time a detailed terrestrial hydroclimatic record for the southern Australian drylands during 23-15 ka. Recharge to Mairs Cave is interpreted from the speleothem record by the activation of growth, physical flood layering, and d18O and d13C minima. Periods of lowered recharge are indicated by 18O and 13C enrichment, primarily affecting d18O, argued to be driven by evaporation of shallow soil/epikarst water in this water-limited environment. A hydrological driver is supported by calcite fabric changes. These include the presence of laminae, visible organic colloids, and occasional dissolution features, related to recharge, as well as the presence of sediment bands representing cave floor flooding. A shift to slower-growing, more compact calcite and an absence of lamination is interpreted to represent reduced recharge. # The Mairs Cave record indicates that the Flinders Ranges were relatively wet during the LGM and early deglaciation, particularly over the interval 18.9-15.8 ka. This wetter phase ended abruptly with a shift to drier conditions at 15.8 ka. These findings are in agreement with the geomorphic archives for this region, as well as the timing of events in records from the broader Australasian region. The recharge phases identified in the Mairs Cave record are correlated with, but antiphase to, the position of the westerly winds interpreted from marine core MD03-2611, located 550 km south of Mairs Cave in the Murray Canyons region. The implication is that the mid-latitude westerlies are located further south during the period of enhanced recharge in the Mairs Cave record (18.9-16 ka) and conversely are located further north when greater aridity is interpreted in the speleothem record. A further comparison with speleothem records from the northern Australasian region reveals that the availability of tropical moisture is the most likely explanation driving enhanced recharge, with further amplification of recharge occurring during the early half of Heinrich Stadial 1 (HS1), possibly influenced by a more southerly displaced Intertropical Convergence Zone (ITCZ). A rapid transition to aridity at 15.8 ka is consistent with a retraction of this tropical moisture source. #------------------ # Funding_Agency # Funding_Agency_Name: Australian Research Council # Grant: LE0989624, LE0668400, LE0989067 #------------------ # Site_Information # Site_Name: Mairs Cave # Location: Australia/New Zealand>Australia # Country: Australia # Northernmost_Latitude: -32.16 # Southernmost_Latitude: -32.16 # Easternmost_Longitude: 138.83 # Westernmost_Longitude: 138.83 # Elevation: #------------------ # Data_Collection # Collection_Name: Mairs2017MC-S1 # Earliest_Year: 17239 # Most_Recent_Year: 14945 # Time_Unit: Cal. Year BP # Core_Length: 0.111 m # Notes: #------------------ # Chronology_Information # Chronology: # #---------------- # Variables # # Data variables follow are preceded by "##" in columns one and two. # Data line variables format: one per line, shortname-tab-variable components (what, material, error, units, seasonality, data type,detail, method, C or N for Character or Numeric data, free text) # ## depth_mm depth, , , mm, , , , ,N, ## age_calkaBP age, , , calendar Kyears before present, , , , ,N, ## d18O delta 18O, calcite, , per mil VPDB, ,speleothems, ,continuous-flow isotope ratio mass spectrometry,N, ## d13C delta 13C, calcite, , per mil VPDB, ,speleothems, ,continuous-flow isotope ratio mass spectrometry,N, # #---------------- # Data: # Data lines follow (have no #) # Data line format - tab-delimited text, variable short name as header # Missing Values: # depth_mm age_calkaBP d18O d13C 0.3 14.945 -5.610 -8.329 0.6 15.022 -5.239 -6.604 0.9 15.098 -5.418 -6.119 1.2 15.172 -5.979 -6.610 1.5 15.241 -5.968 -6.732 1.8 15.304 -6.829 -7.439 2.1 15.364 -6.497 -7.364 2.4 15.426 -5.930 -7.180 2.7 15.489 -5.989 -7.009 3 15.543 -6.072 -7.100 3.3 15.578 -5.796 -6.616 3.6 15.602 -5.847 -6.529 3.9 15.621 -5.894 -6.958 4.2 15.638 -6.370 -7.056 4.5 15.654 -6.065 -6.681 4.8 15.669 -6.000 -6.793 5.1 15.684 -5.553 -6.926 5.4 15.700 -5.603 -6.546 5.7 15.715 -5.857 -6.548 6 15.730 -5.670 -6.130 6.3 15.746 -5.805 -6.262 6.6 15.762 -5.995 -6.266 6.9 15.779 -6.368 -6.814 7.2 15.798 -6.284 -7.317 7.5 15.818 -5.608 -7.074 7.8 15.833 -5.516 -7.626 8.4 15.849 -5.591 -6.879 8.7 15.855 -6.104 -7.521 9 15.861 -6.629 -8.027 9.6 15.872 -6.562 -8.060 10.2 15.883 -6.298 -8.232 10.5 15.888 -6.296 -7.893 10.8 15.893 -7.386 -8.008 11.4 15.902 -6.995 -8.412 11.7 15.907 -6.205 -7.991 12 15.911 -6.252 -8.612 12.3 15.916 -7.570 -8.815 12.6 15.920 -7.631 -8.436 12.9 15.925 -7.339 -8.055 13.2 15.929 -6.452 -8.774 13.8 15.938 -6.400 -9.111 14.4 15.946 -6.724 -8.851 15 15.955 -6.874 -8.432 15.3 15.959 -6.399 -8.309 15.6 15.963 -6.009 -8.517 16.2 15.972 -6.333 -7.884 16.5 15.976 -5.484 -8.096 16.8 15.980 -5.463 -8.150 17.1 15.984 -6.095 -8.110 17.4 15.988 -6.670 -8.264 18 15.996 -6.845 -7.949 18.6 16.004 -6.486 -8.530 19.2 16.013 -6.038 -8.676 19.8 16.021 -6.108 -8.331 20.4 16.029 -5.996 -8.242 20.7 16.033 -6.457 -7.373 21 16.037 -6.869 -8.219 21.3 16.041 -6.531 -9.259 21.6 16.045 -6.133 -9.232 22.2 16.053 -5.951 -8.639 22.8 16.062 -5.912 -9.154 23.4 16.070 -6.601 -8.376 24 16.078 -7.025 -8.337 24.6 16.086 -7.007 -8.836 25.2 16.095 -6.707 -8.152 25.8 16.103 -6.513 -7.646 26.1 16.108 -5.342 -6.588 26.4 16.112 -5.723 -7.444 27 16.121 -6.108 -7.944 27.6 16.129 -5.797 -7.995 28.2 16.138 -5.755 -8.111 28.8 16.148 -6.045 -8.354 29.4 16.157 -5.724 -7.916 30 16.167 -6.481 -8.865 30.6 16.177 -6.189 -7.779 31.2 16.189 -6.469 -7.671 31.8 16.200 -7.126 -8.251 32.4 16.213 -7.173 -7.262 33 16.227 -6.606 -8.113 33.6 16.239 -7.147 -8.619 34.2 16.249 -7.082 -8.599 34.5 16.254 -6.984 -8.455 34.8 16.259 -7.657 -8.609 35.1 16.263 -6.369 -8.302 35.4 16.267 -6.657 -8.790 36 16.276 -7.185 -7.990 36.6 16.284 -6.996 -8.125 37.2 16.292 -6.969 -8.109 37.5 16.296 -6.429 -8.496 37.8 16.300 -6.230 -8.668 38.4 16.307 -6.680 -8.419 39 16.315 -6.716 -8.588 39.6 16.322 -6.052 -8.030 39.9 16.326 -6.067 -8.326 40.2 16.330 -7.532 -9.372 40.8 16.337 -6.762 -8.937 41.4 16.343 -6.794 -8.896 42 16.350 -6.585 -8.474 42.6 16.357 -6.341 -8.673 43.2 16.364 -6.726 -8.524 43.5 16.367 -6.916 -8.302 43.8 16.370 -7.524 -8.598 44.1 16.373 -6.311 -8.579 44.4 16.377 -6.561 -8.114 45 16.383 -7.035 -8.566 45.6 16.390 -7.026 -8.521 46.2 16.396 -7.370 -8.781 46.5 16.399 -6.469 -8.237 46.8 16.402 -6.452 -8.408 47.4 16.409 -6.439 -9.103 48 16.415 -6.344 -8.656 48.6 16.421 -6.267 -8.752 49.2 16.428 -6.687 -8.684 49.8 16.435 -6.509 -8.892 50.4 16.441 -6.832 -9.017 50.7 16.444 -6.858 -8.493 51 16.447 -5.771 -7.830 51.3 16.450 -6.119 -8.617 51.6 16.453 -6.633 -8.523 52.2 16.459 -7.003 -8.566 52.8 16.465 -6.471 -8.484 53.4 16.472 -6.471 -7.878 54 16.478 -6.987 -7.971 54.3 16.481 -6.269 -7.968 54.6 16.484 -6.245 -8.132 54.9 16.488 -6.305 -7.398 55.2 16.491 -6.855 -7.101 55.5 16.494 -6.272 -7.527 55.8 16.497 -6.162 -7.497 56.1 16.500 -6.154 -7.388 56.4 16.504 -7.126 -8.132 56.7 16.507 -6.626 -8.119 57 16.510 -6.195 -8.642 57.6 16.516 -6.374 -8.596 58.2 16.523 -6.014 -8.292 58.8 16.529 -6.288 -8.710 59.4 16.535 -5.862 -8.228 60 16.542 -5.941 -8.601 60.6 16.548 -6.606 -8.411 61.2 16.554 -6.502 -8.196 61.8 16.560 -6.889 -8.267 62.4 16.567 -7.003 -7.519 63 16.573 -6.956 -8.356 63.3 16.577 -6.590 -7.713 63.6 16.580 -6.140 -8.253 64.2 16.586 -6.151 -8.283 64.8 16.592 -6.462 -7.639 65.4 16.599 -6.586 -7.145 66 16.606 -7.030 -7.660 66.6 16.612 -6.810 -8.105 67.2 16.619 -6.726 -8.143 67.8 16.626 -7.126 -8.317 68.4 16.632 -6.712 -8.096 69 16.640 -6.265 -7.743 69.6 16.647 -5.949 -7.608 69.9 16.650 -6.586 -7.792 70.2 16.653 -6.935 -7.943 70.8 16.661 -6.675 -7.124 71.4 16.667 -6.312 -7.896 72 16.675 -6.534 -8.165 72.6 16.682 -6.316 -7.338 73.2 16.690 -6.430 -7.460 73.8 16.698 -6.458 -8.210 74.4 16.706 -6.171 -7.710 75 16.714 -6.199 -7.659 75.6 16.723 -5.931 -7.159 76.2 16.731 -6.286 -8.062 76.8 16.742 -5.793 -7.350 77.4 16.752 -5.721 -7.588 78 16.765 -6.463 -7.247 78.3 16.771 -6.896 -7.319 78.6 16.777 -7.156 -8.171 79.2 16.789 -7.267 -8.055 79.5 16.794 -6.793 -7.747 79.8 16.799 -6.409 -7.985 80.4 16.808 -6.773 -8.479 81 16.817 -6.880 -8.036 81.6 16.826 -7.571 -7.996 81.9 16.830 -5.969 -7.669 82.2 16.834 -6.322 -7.732 82.8 16.843 -5.914 -7.265 83.4 16.851 -6.093 -7.229 84 16.859 -6.038 -8.183 84.6 16.866 -7.732 -8.076 85.2 16.874 -6.835 -7.014 85.8 16.882 -5.968 -7.648 86.4 16.889 -7.307 -7.266 87 16.897 -6.288 -7.901 87.6 16.905 -6.029 -7.621 88.2 16.912 -5.938 -8.238 88.8 16.920 -5.455 -8.312 89.4 16.927 -6.542 -7.788 90 16.935 -6.319 -6.940 90.6 16.942 -6.544 -7.879 91.2 16.950 -6.159 -7.690 91.8 16.957 -5.973 -8.637 92.4 16.965 -6.235 -8.649 93 16.972 -6.217 -8.694 93.6 16.979 -6.752 -8.783 94.2 16.987 -7.608 -8.822 94.8 16.995 -7.281 -9.147 95.4 17.002 -6.612 -9.020 96 17.010 -6.184 -8.694 96.6 17.017 -6.586 -8.788 97.2 17.025 -6.598 -7.885 97.8 17.033 -6.933 -8.743 98.4 17.041 -6.644 -8.352 99 17.049 -6.198 -7.952 99.6 17.057 -6.300 -7.966 100 17.063 -6.293 -8.139 100.6 17.071 -5.803 -8.177 101.2 17.080 -5.264 -8.144 101.8 17.089 -5.582 -8.545 102.4 17.098 -6.141 -7.836 103 17.109 -6.308 -8.848 103.6 17.120 -6.227 -8.538 104.2 17.133 -6.398 -8.295 104.8 17.146 -5.844 -8.290 105.4 17.157 -6.643 -8.895 106 17.166 -6.625 -9.392 106.6 17.174 -6.736 -8.300 107.2 17.183 -6.239 -8.830 107.8 17.191 -6.557 -8.724 108.4 17.200 -6.343 -8.641 109 17.208 -6.923 -9.388 109.6 17.216 -6.585 -7.932 110 17.222 -6.370 -8.047 110.6 17.230 -6.933 -8.337 111.2 17.239 -6.543 -7.832