# Wimmera Lakes, Australia Holocene Ostracod Salinity Reconstruction #----------------------------------------------------------------------- # World Data Service for Paleoclimatology, Boulder # and # NOAA Paleoclimatology Program #----------------------------------------------------------------------- # 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: https://www.ncdc.noaa.gov/paleo/study/22414 # Description: NOAA Landing Page # Online_Resource: http://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/australia/nw-jacka2012.txt # Description: NOAA location of the template # # # Archive: Paleolimnology # # Parameter_Keywords: physical properties, oxygen isotopes, reconstruction #--------------------------------------- # Contribution_Date # Date: 2017-07-16 #--------------------------------------- # File_Last_Modified_Date # Date: 2017-07-16 #--------------------------------------- # Title # Study_Name: Wimmera Lakes, Australia Holocene Ostracod Salinity Reconstruction #--------------------------------------- # Investigators # Investigators: Kemp, J.; Radke, L.C.; Olley, J.; Juggins, S.; De Deckker, P. #--------------------------------------- # Description_Notes_and_Keywords # Description: Wimmera Lakes, Victoria, Australia Ostracod Holocene physical properties and d18O data and salinity reconstruction. # Provided Keywords: ostracods, salt lakes, Southern Hemisphere Westerlies, palaeohydrology, Murray Darling Basin, climate variability, transfer function, sea sediment core, late Pleistocene, south-Australia, New-Zealand, ice-core, younger dryas, rainfall variability, chemical diversity, western-Victoria, pollen evidence #--------------------------------------- # Publication # Authors: Justine Kemp, Lynda C. Radke, Jon Olley, Steve Juggins, Patrick De Deckker # Published_Date_or_Year: 2012-01-01 # Published_Title: Holocene lake salinity changes in the Wimmera, southeastern Australia, provide evidence for millennial-scale climate variability # Journal_Name: Quaternary Research # Volume: 77 # Edition: # Issue: 1 # Pages: 65-76 # Report Number: # DOI: 10.1016/j.yqres.2011.09.013 # Online_Resource: http://dx.doi.org/10.1016/j.yqres.2011.09.013 # Full_Citation: # Abstract: Palaeosalinity records for groundwater-influenced lakes in the southwest Murray Basin were constructed from an ostracod-based, weighted-averaging transfer function, supplemented with evidence from Campylodiscus clypeus (diatom), charophyte oogonia, Coxiella striata (gastropod), Elphidium sp. (foraminifera), Daphniopsis sp. ephippia (Cladocera), and brine shrimp (Parartemia zietziana) faecal pellets, the d18O of ostracods, and > 130 um quartz sand counts. The chronology is based on optically stimulated luminescence and calibrated radiocarbon ages. Relatively wet conditions are marked by lower salinities between 9600 yr and 5700 yr ago, but mutually exclusive high- and low-salinity ostracod communities suggest substantial variability in effective precipitation in the early Holocene. A drier climate was firmly in place by 4500 yr and is marked at the groundwater-dominated NW Jacka Lake by an increase in aeolian quartz and at Jacka Lake, by a switch from surface-water to groundwater dominance. Short-lived, low-salinity events at 8800, 7200, 5900, 4800, 2400, 1300 and 400 yr are similar in timing and number to those recorded on Australia's southern continental shelf, and globally, and provide evidence for the existence of the ~ 1500-yr cycle in mainland southern Australia. We surmise that these are cool events associated with periodic equatorward shifts in the westerly wind circulation. #--------------------------------------- # Funding_Agency # Funding_Agency_Name: Australian Commonwealth # Grant: Postgraduate Scholarship (L.Radke) #--------------------------------------- # Site Information # Site_Name: Jacka Lake # Location: Australia/New Zealand>Australia # Country: Australia # Northernmost_Latitude: -36.8 # Southernmost_Latitude: -36.8 # Easternmost_Longitude: 141.8 # Westernmost_Longitude: 141.8 # Elevation: 132 m #--------------------------------------- # Data_Collection # Collection_Name: NW-Jacka2012 # First_Year: 11394 # Last_Year: 0 # Time_Unit: Cal. Yr BP # Core_Length: 0.15 m # Notes: Collected in 1994 #--------------------------------------- # Chronology_Information # Chronology: # # Lab ID ANU-9808 NWJ16 OZA033 NWJ68 ANU-9809 OZA034 ANU-9810 NWJ105 ANU-9811 OZA035 # Dated material Bulk Sediment Quartz sand Ostracod valves Quartz sand Bulk Sediment Ostracod valves Bulk Sediment Quartz sand Bulk sediment Ostracod valves # depth_bot (mm) 8 16 27 68 70 93 97 105 124 137.5 # depth_top (mm) NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN # age (bp) NaN 1540 NaN 4950 NaN NaN NaN 6700 NaN NaN # age14C (bp) 1130 NaN 3480 NaN 5410 6420 7200 NaN 5130 2420 # age_error (years) 70 215 90 470 90 100 110 800 320 110 # calibrated age (cal BP) NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN # 2-sigma error of cal age (years) NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN # cal_age_range_old (bp) 1167 NaN 3863 NaN 6298 7428 8161 NaN 6279 2669 # cal_age_range_young (2_s) 962 NaN 3638 NaN 6022 7261 7939 NaN 5587 2349 # depth (mm) NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN # thickness (mm) NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN # notes NW Jacka Lake NW Jacka Lake NW Jacka Lake NW Jacka Lake NW Jacka Lake NW Jacka Lake NW Jacka Lake NW Jacka Lake NW Jacka Lake NW Jacka Lake # # Lab ID ANU-9805 JL23 JL46 ANU-9806 JL66 ANU-9807 JL139 JL150 NaN NaN # Dated material Bulk sediment quartz sand quartz sand bulk sediment quartz sand bulk sediment quartz sand quartz sand NaN NaN # depth_bot (mm) 23 23 46 59 66 138 139 150 NaN NaN # depth_top (mm) NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN # age (bp) NaN -21 565 NaN 935 NaN 7450 6950 NaN NaN # age14C (bp) 460 NaN NaN 1350 NaN 5430 NaN NaN NaN NaN # age_error (years) 140 15 130 130 85 170 1000 1000 NaN NaN # calibrated age (cal BP) NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN # 2-sigma error of cal age (years) NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN # cal_age_range_old (bp) 632 NaN NaN 1385 NaN 6395 NaN NaN NaN NaN # cal_age_range_young (2_s) 317 NaN NaN 1191 NaN 5999 NaN NaN NaN NaN # depth (mm) NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN # thickness (mm) NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN # notes Jacka Lake Jacka Lake Jacka Lake Jacka Lake Jacka Lake Jacka Lake Jacka Lake Jacka Lake NaN NaN # #--------------------------------------- # 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) # ## depth_cm depth, , , cm, , , , ,N, ## age_CE age, , , common era, , , , ,N, ## age_calBP age, , , calendar years before present, , , , ,N, ## log salinity_g/L log Salinity,,r2 between observed and estimated log salinity r2=0.91; root mean square error=0.167log10 units; root mean square error prediction =0.27log10 units,grams/litre,,paleolimnology,reconstruction from ostracod assemblage,salinity relationship of ecological assemblage based on modern ostracod training set,N, ## sand Sand,,,grams/dry weight sediment <130um,,paleolimnology,quartz sand grain,,N, #------------------------ # Data # Data lines follow (have no #) # Data line format - tab-delimited text, variable short name as header # Missing Value: NA # depth_cm age_CE age_calBP log salinity_g/L sand 0.00 1950.00 0.00 1.90 15.68 1.50 1778.85 171.15 1.83 6.17 3.50 1550.65 399.35 1.78 39.39 4.50 1436.55 513.45 NA 75.11 5.50 1322.45 627.55 1.79 NA 6.00 1265.40 684.60 NA 58.55 7.50 1094.25 855.75 1.77 45.85 9.00 923.10 1026.90 1.77 16.33 11.50 637.85 1312.15 1.75 23.47 14.00 352.60 1597.40 1.80 75.48 16.50 67.35 1882.65 1.82 252.22 19.00 -217.90 2167.90 1.76 35.22 21.00 -446.10 2396.10 1.70 45.00 22.50 -617.25 2567.25 1.76 41.77 25.00 -902.50 2852.50 1.78 54.35 27.50 -1187.75 3137.75 1.77 73.99 30.00 -1502.39 3452.39 1.77 29.74 32.50 -1648.39 3598.39 1.78 34.98 35.00 -1794.39 3744.39 1.85 42.70 36.00 -1852.79 3802.79 1.85 73.32 37.50 -1940.39 3890.39 1.81 23.75 42.50 -2232.39 4182.39 1.78 60.39 45.00 -2378.39 4328.39 1.77 23.93 47.50 -2524.39 4474.39 1.67 10.78 50.50 -2699.59 4649.59 1.67 8.22 53.00 -2845.59 4795.59 1.49 15.50 56.00 -3020.79 4970.79 1.69 15.60 62.50 -3400.39 5350.39 1.76 25.77 67.50 -3692.39 5642.39 1.79 29.05 69.00 -3779.99 5729.99 1.34 14.42 71.00 -3896.79 5846.79 1.32 1.82 74.50 -4101.19 6051.19 1.32 5.65 77.00 -4247.19 6197.19 NA 5.04 79.50 -4393.19 6343.19 1.65 1.02 82.00 -4539.19 6489.19 1.35 8.80 84.50 -4685.19 6635.19 1.69 1.77 86.50 -4801.99 6751.99 1.39 4.68 89.50 -4977.19 6927.19 1.45 1.73 92.00 -5123.19 7073.19 1.34 28.57 93.00 -5181.59 7131.59 1.34 3.31 95.50 -5327.59 7277.59 1.34 9.80 100.00 -5590.39 7540.39 NA 2.56 104.00 -5823.99 7773.99 NA 152.74 106.00 -5940.79 7890.79 1.70 58.74 107.50 -6028.39 7978.39 NA 28.87 110.00 -6174.39 8124.39 1.67 2.02 112.50 -6320.39 8270.39 1.71 4.54 116.00 -6524.79 8474.79 NA 0.00 118.00 -6641.59 8591.59 1.60 0.00 120.00 -6758.39 8708.39 1.32 1.92 123.00 -6933.59 8883.59 1.33 6.26 127.00 -7167.19 9117.19 NA 2.50 129.00 -7283.99 9233.99 NA 10.05 133.00 -7517.59 9467.59 NA 3.68 136.00 -7692.79 9642.79 NA 12.77 137.50 -7780.39 9730.39 1.83 1.61 141.00 -7984.79 9934.79 NA 9.06 143.50 -8130.79 10080.79 1.81 6.86 145.00 -8247.59 10197.59 1.81 NA 146.50 -8305.99 10255.99 NA 9.06 149.50 -8481.19 10431.19 NA 0.00 151.00 -8568.79 10518.79 NA 0.00 153.00 -8685.59 10635.59 NA 16.15 154.50 -8773.19 10723.19 NA 7.30 158.00 -8977.59 10927.59 NA 4.32 162.50 -9240.39 11190.39 NA 12.05 166.00 -9444.79 11394.79 NA 11.34