# Buckeye Creek Cave 7000 Year Stalagmite Oxygen Isotope 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/cdo/f?p=519:1:0::::P1_STUDY_ID:9741 # # Online_Resource: https://www.ncdc.noaa.gov/paleo/study/24611 # # Original_Source_URL: ftp://ftp.ncdc.noaa.gov/pub/data/paleo/speleothem/northamerica/usa/westvirginia/buckeye-creek2010.txt # # Description/Documentation lines begin with # # Data lines have no # # # Archive: Speleothems #-------------------- # Contribution_Date # Date: 2010-10 #-------------------- # Title # Study_Name: Buckeye Creek Cave 7000 Year Stalagmite Oxygen Isotope Data #-------------------- # Investigators # Investigators: Hardt, B.; Rowe, H.D.; Springer, G.S.; Cheng, H.; Edwards, R.L. #-------------------- # Description_and_Notes # Description: Oxygen isotope data from three stalagmites collected in Buckeye Creek Cave, West Virginia. Stalagmites BCC-2, BCC-4, and BCC-6 were collected >1 km from the cave entrance and ~35 m below the surface. Oxygen isotope samples were milled at 1-mm intervals, with results reported in per mil V-PDB. #-------------------- # Publication # Authors: Hardt, B.; Rowe, H.D.; Springer, G.S.; Cheng, H.; Edwards, R.L. # Published_Date_or_Year: 2010 # Published_Title: The seasonality of east central North American precipitation based on three coeval Holocene speleothems from southern West Virginia. # Journal_Name: Earth and Planetary Science Letters # Volume: 295 # Edition: # Issue: # Pages: 342-348 # DOI: 10.1016/j.epsl.2010.04.002 # Online_Resource: # Full_Citation: Hardt, B., H.D. Rowe, G.S. Springer, H. Cheng, and R.L. Edwards. 2010. The seasonality of east central North American precipitation based on three coeval Holocene speleothems from southern West Virginia. Earth and Planetary Science Letters, Vol. 295, pp. 342-348. doi:10.1016/j.epsl.2010.04.002 # Abstract: We present a replicated record of Holocene climate change from a cave in West Virginia, USA. Based on analysis of stable isotopes in precipitation (d18Ow) from the closest Global Network of Isotopes in Precipitation (GNIP) station in Coshocton, OH, we interpret enriched oxygen isotopes in calcite (d18Oc) as representing an increase in the relative contribution of summer precipitation to annual totals. Significant coherence between local summer (July and August) precipitation and the Summer North Atlantic Oscillation (SNAO) index on multi-decadal timescales suggests that summer precipitation in our study area is strongly influenced by changes in the Bermuda High. A strengthened Bermuda High circulation would increase summer precipitation amounts in the region and lead to enriched d18Oc of speleothem calcite. Our d18Oc record achieves maximum values during the mid-Holocene, consistent with previous studies indicating an intensified Bermuda High circulation at that time. At 4.2 ka, d18Oc transitions to lower values at a time when numerous records around the globe document significant changes in the hydrologic budget. Over the last 2000 years, there are intervals of substantially decreased d18Oc, coincident with aridity in the Yucatan, Alpine glacial advances, and a weakened Asian summer monsoon. #------------------ # Authors: Anderson, D.M., Tardif, R., Horlick, K., Erb, M.P., Hakim, G.J., Noone, D., Perkins, W.A., and E. Steig # Published_Date_or_Year: 2018 # Published_Title: Additions to the last millennium reanalysis multi-proxy database # Journal_Name: Data Science Journal # Volume: # Edition: # Issue: # Pages: # Report_Number: # DOI: # Online_Resource: # Full_Citation: Anderson, D.M., Tardif, R., Horlick, K., Erb, M.P., Hakim, G., J., Noone, D., Perkins, W.A., and E. Steig, submitted. Additions to the last millennium reanalysis multi-proxy database. Data Science Journal. # Abstract: Progress in paleoclimatology increasingly occurs via data syntheses. We describe additions to a collection prepared for use in paleoclimate state estimation, specifically the Last Millennium Reanalysis (LMR). The 2290 additional series include 2152 tree ring chronologies and 138 other series. They supplement the collection used previously and together form a database titled LMRdb 1.0.0. The additional data draws from lake core, ice core, coral, speleothem, and tree ring archives, using published data primarily from the NOAA Paleoclimatology archive and a set of tree ring width chronologies standardized from raw International Tree Ring Data Bank ring width series. In contrast to many previous paleo compilations, the data were not selected (screened) on the basis of their environmental correlation, multi-century length, or other attributes. The inclusion of proxies sensitive to moisture and other environmental variables expands their use in data assimilation. A preliminary calibration using linear regression with mean annual temperature reveals characteristics of the proxy series and their relationship to temperature, as well as the noise and error characteristics of the records. The additional records are structured as individual files in the NOAA Paleoclimatology format and archived at NOAA Paleoclimatology (Anderson et al. 2018) and will continue to be improved and expanded as part of the LMR Project. The additions represent a four-fold increase in the number of records available for assimilation, provide expanded geographic coverage, and add additional proxy variables. Applications include data assimilation, proxy system model development, and paleoclimate reconstruction using climate field reconstruction and other methods. #------------------ # Funding_Agency # Funding_Agency_Name: US National Science Foundation # Grant: 0903071, 0902867 #------------------ # Funding_Agency_Name: National Science Foundation # Grant:AGS-1304263 # Funding_Agency_Name: National Oceanic and Atmospheric Administration # Grant:NA14OAR4310176 #------------------ # Site_Information # Site_Name: Buckeye Creek Cave, West Virginia # Location: North America>United States Of America>West Virginia # Country: United States of America # Northernmost_Latitude: 37.9761 # Southernmost_Latitude: 37.9761 # Easternmost_Longitude: -80.3997 # Westernmost_Longitude: -80.3997 # Elevation: 600 m #------------------ # Data_Collection # Collection_Name: 10wvir02a # Earliest_Year: 7184 # Most_Recent_Year: 78 # Time_Unit: yb_1950 # Core_Length: .2135 m # Notes: {"database":"LMR"} Stalagmite BCC-4 #------------------ # Chronology: # 1. Uranium and thorium isotopic compositions and 230Th ages by ICP-MS # #Sample 238U 232Th d234U [230Th/238U] Age (yr BP) d234Uinitial Age(yr BP) # ID ppb ppt measured*a activity*c uncorrected corrected corrected*c,*e # #BCC4-2.5 535 +/- 1 991 +/- 19 1560.9 +/- 2.9 0.00609 +/- 0.00018 205 +/- 8 1562.0 +/- 2.9 184 +/- 13 #BCC4-26 747.4 +/- 1.9 75.6 +/- 0.4 1564.7 +/- 2.7 0.0348 +/- 0.0005 1432 +/- 20 1571.3 +/- 2.7 1431 +/- 20 #BCC4-63 910 +/- 40 94 +/- 4 1592.4 +/- 2.2 0.0451 +/- 0.0005 1854 +/- 21 1601.0 +/- 2.2 1853 +/- 21 #BCC4-87 778.1 +/- 1.4 894 +/- 3 1525.5 +/- 2.5 0.0529 +/- 0.0006 2247 +/- 26 1535.5 +/- 2.5 2235 +/- 27 #BCC4-90 740 +/- 29 352 +/- 14 1531 +/- 3 0.0615 +/- 0.0007 2620 +/- 30 1542 +/- 3 2620 +/- 30 #BCC4-105 630.7 +/- 1.2 1025 +/- 6 1571 +/- 3 0.0704 +/- 0.0010 2960 +/- 40 1585 +/- 3 2950 +/- 50 #BCC4-121 716 +/- 29 2500 +/- 100 1559 +/- 4 0.0847 +/- 0.0008 3600 +/- 40 1575 +/- 4 3560 +/- 50 #BCC4-137 698.3 +/- 1.2 1034 +/- 5 1594 +/- 3 0.0965 +/- 0.0017 4060 +/- 70 1613 +/- 3 4050 +/- 80 #BCC4-149.5 774.4 +/- 1.2 95.7 +/- 1.4 1623.3 +/- 2.5 0.1049 +/- 0.0016 4380 +/- 70 1643.8 +/- 2.5 4380 +/- 70 #BCC4-160 682.0 +/- 1.0 1570 +/- 9 1612.9 +/- 2.7 0.1171 +/- 0.0020 4920 +/- 90 1635.6 +/- 2.7 4900 +/- 90 #BCC4-161 860 +/- 30 2370 +/- 90 1572.1 +/- 2.3 0.1206 +/- 0.0010 5160 +/- 40 1595.3 +/- 2.4 5130 +/- 50 #BCC4-197.5 720.8 +/- 1.1 2513 +/- 7 1675.1 +/- 2.8 0.1534 +/- 0.0013 6350 +/- 60 1705.5 +/- 2.9 6320 +/- 60 #BCC4-215 932 +/- 1 6811 +/- 27 1565.2 +/- 2.5 0.1674 +/- 0.0008 7270 +/- 40 1597.6 +/- 2.6 7180 +/- 60 # #Analytical errors are 2s of the mean. #*a d234U = ([234U/238U]activity - 1) x 1000. #*b d234Uinitial corrected was calculated based on 230Th age (T), i.e., d234Uinitial = d234Umeasured X el234*T, and T is corrected age. #*c [230Th/238U]activity = 1 - e-l230T + (d234Umeasured/1000)[l230/(l230 - l234)](1 - e-(l230 - l234) T), where T is the age. # Decay constants are 9.1577 x 10-6 yr-1 for 230Th, 2.8263 x 10-6 yr-1 for 234U, and 1.55125 x 10-10 yr-1 for 238U (Cheng et al., 2000). #*d The degree of detrital 230Th contamination is indicated by the [230Th/232Th] atomic ratio instead of the activity ratio. #*e Age corrections were calculated using an average crustal 230Th/232Th atomic ratio of 4.4 x 10-6 +/- 2.2 x 10-6. # Those are the values for a material at secular equilibrium, with the crustal 232Th/238U value of 3.8. The errors are arbitrarily # assumed to be 50%. # # # # # # # #---------------- # Variables # # Data variables follow that are preceded by "##" in columns one and two. # Data line variables format: Variables list, one per line, shortname-tab-longname-tab-longname components (9 components: what, material, error, units, seasonality, archive, detail, method, C or N for Character or Numeric data) # ##depth depth in core, , , mm, , , , ,N ##age age, , , years AD, , , , ,N ##d18O delta 18 Oxygen,speleothem calcite,,permil VPDB,,Speleothems,,,N #---------------- # Data: # Data lines follow (have no #) # Data line format - tab-delimited text, variable short name as header # Missing Values: NAN # depth age d18O 0.5 78 -6.18 1.5 131 -6.09 2.5 184 -6.02 3.5 237 -6.24 4.5 290 -6.27 5.5 343 -6.34 6.5 397 -6.18 7.5 450 -6.1 8.5 503 -6.09 9.5 556 -5.93 10.5 609 -5.98 11.5 662 -6.14 12.5 715 -5.98 13.5 768 -6.21 14.5 821 -6.05 15.5 874 -6.06 16.5 927 -6.04 17.5 980 -6.18 18.5 1033 -6.38 19.5 1086 -6.26 20.5 1140 -6.33 21.5 1193 -6.17 22.5 1246 -6.21 23.5 1299 -6.18 24.5 1352 -6.31 85.5 2209 -6.09 86.5 2226 -6.15 87.5 2262 -6.01 88.5 2316 -5.75 89.5 2371 -5.68 90.5 2425 -5.86 91.5 2479 -5.97 92.5 2534 -6.1 93.5 2588 -6.01 94.5 2630 -5.99 95.5 2660 -6.15 96.5 2690 -5.89 97.5 2720 -5.93 98.5 2750 -5.9 99.5 2781 -6.04 100.5 2811 -6.15 101.5 2841 -6.08 102.5 2871 -6.05 103.5 2901 -6.03 104.5 2931 -5.81 105.5 2965 -5.94 106.5 3002 -5.9 107.5 3040 -6.05 108.5 3077 -5.99 109.5 3114 -5.95 110.5 3152 -6.04 111.5 3189 -5.9 112.5 3227 -6.1 113.5 3264 -6.03 114.5 3302 -6.05 115.5 3339 -6.18 116.5 3377 -5.92 117.5 3414 -6.02 118.5 3452 -6.07 119.5 3489 -6.22 120.5 3526 -6.16 121.5 3564 -6.03 122.5 3595 -6.18 123.5 3626 -6.05 124.5 3658 -5.98 125.5 3689 -6.09 126.5 3720 -5.78 127.5 3752 -6 128.5 3783 -5.91 129.5 3814 -5.92 130.5 3845 -5.77 131.5 3877 -5.84 132.5 3908 -5.83 133.5 3939 -5.94 134.5 3970 -5.69 135.5 4002 -5.91 136.5 4033 -5.92 137.5 4062 -5.89 138.5 4088 -6.11 139.5 4114 -5.77 140.5 4140 -5.67 141.5 4167 -5.74 142.5 4193 -5.78 143.5 4219 -5.91 144.5 4245 -5.75 145.5 4272 -6.07 146.5 4298 -5.83 147.5 4324 -5.87 148.5 4350 -5.72 149.5 4376 -5.75 150.5 4426 -5.69 151.5 4476 -5.65 152.5 4526 -5.75 153.5 4576 -5.62 154.5 4626 -5.63 155.5 4676 -5.59 156.5 4726 -5.63 157.5 4776 -5.62 158.5 4826 -5.61 159.5 4876 -5.55 160.5 4917 -5.54 161.5 4950 -5.66 162.5 4983 -5.56 163.5 5016 -5.67 164.5 5048 -5.73 165.5 5081 -5.81 166.5 5114 -5.69 167.5 5150 -5.68 168.5 5189 -5.73 169.5 5228 -5.78 170.5 5266 -5.61 171.5 5305 -5.53 172.5 5344 -5.71 173.5 5383 -5.7 174.5 5422 -5.69 175.5 5461 -5.64 176.5 5500 -5.78 177.5 5538 -5.83 178.5 5577 -5.83 179 5597 -5.77 179.5 5616 -5.72 180.5 5655 -5.8 181.5 5694 -5.76 182.5 5733 -5.75 183.5 5772 -5.8 184.5 5810 -5.77 185.5 5849 -5.52 186.5 5888 -5.61 187.5 5927 -5.88 188.5 5966 -5.77 189.5 6005 -5.57 190.5 6044 -5.6 191.5 6083 -5.86 192.5 6121 -5.76 193.5 6160 -5.78 194.5 6199 -5.73 195 6219 -5.87 195.5 6238 -6.02 196.5 6277 -6.02 197.5 6316 -5.89 198.5 6370 -5.8 199.5 6424 -5.77 200.5 6479 -5.78 201.5 6533 -5.87 202.5 6587 -5.75 203.5 6641 -5.79 204.5 6696 -5.8 205.5 6750 -5.73 206.5 6804 -6 207.5 6859 -5.8 208.5 6913 -5.75 209.5 6967 -5.66 210.5 7021 -5.64 211.5 7076 -5.69 212.5 7130 -5.58 213.5 7184 -5.59