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  • 11
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    Biweekly cave drip water (oxygen isotope) variations from three sites from Gunung Mulu National Park in Northern Sarawak, Borneo - 2010 survey (2020)
    PANGAEA
    Details
    Publication Date: 2023-01-13
    Keywords: Asia, Malaysia; cave drip water; Comment; DATE/TIME; Drip rate; El Nino Southern Oscillation; Geographic name/locality; GunungMuluCave; MULT; Multiple investigations; oxygen isotope; tropics; δ18O, water; δ18O, water, standard deviation; δ Deuterium, water; δ Deuterium, water, standard deviation
    Type: Dataset
    Format: text/tab-separated-values, 1166 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 12
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    Isotopic composition of drip water during slow wind in Gunung Mulu National Park in Northern Sarawak, Borneo (2020)
    PANGAEA
    Details
    Publication Date: 2023-01-13
    Keywords: Asia, Malaysia; cave drip water; DATE/TIME; Drip rate; El Nino Southern Oscillation; GunungMuluCave; MULT; Multiple investigations; oxygen isotope; tropics; δ18O, water; δ18O, water, standard deviation; δ Deuterium, water; δ Deuterium, water, standard deviation
    Type: Dataset
    Format: text/tab-separated-values, 1269 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 13
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    12 year Northern Borneo cave drip water oxygen isotopic time series (2020)
    PANGAEA
    Details
    Publication Date: 2023-01-30
    Description: We present ~twelve year-long time series of biweekly cave drip water (oxygen isotope) variations from three sites from Gunung Mulu National Park in Northern Sarawak, Borneo. Lastly, seven spatial surveys of stalagmite and non-stalagmite forming cave drip water (oxygen isotopes) were taken in: August 2008 (N = 63), Feb/Mar, 2010 (N = 128), Oct/Nov 2012 (N = 291), Feb/Mar 2013 (N = 37), May, 2016 (N = 92), May, 2017 (N = 180), and Mar/Apr, 2018 (N = 124). Twelve years of monitoring data presented in this study identify individual El Niño-Southern Oscillation (ENSO) events in rainfall and cave drip water isotopic composition, providing a robust interpretive framework for past and future stalagmite isotope records from this site.
    Keywords: Asia, Malaysia; cave drip water; El Nino Southern Oscillation; GunungMuluCave; MULT; Multiple investigations; Oxygen isotopes; tropics
    Type: Dataset
    Format: application/zip, 12 datasets
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 14
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    Biweekly cave drip water (oxygen isotope) variations from three sites from Gunung Mulu National Park in Northern Sarawak, Borneo - 2008 survey (2020)
    PANGAEA
    Details
    Publication Date: 2023-01-30
    Keywords: Asia, Malaysia; cave drip water; Comment; DATE/TIME; Drip rate; El Nino Southern Oscillation; Geographic name/locality; GunungMuluCave; MULT; Multiple investigations; oxygen isotope; Oxygen isotopes; tropics; δ18O, water; δ18O, water, standard deviation; δ Deuterium, water; δ Deuterium, water, standard deviation
    Type: Dataset
    Format: text/tab-separated-values, 711 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 15
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    Mulu Borneo stalagmite SC02 U/Th dating and oxygen and carbon stable isotopes, 19.5-10.7 ky BP (2022)
    PANGAEA
    Details
    Publication Date: 2023-11-02
    Description: Here are presented Mulu, Borneo (4°6'N, 114°53'E) Secret Cave stalagmite SC02 d18O and d13C values over Termination 1, published in Buckingham et al. (2022). U-Th ages were calculated using the initial detrital 230Th/232Th value of 111 ± 41 ppm, which was previously calculated for SC02 based on two isochrons measured in separate stalagmites from Secret Cave in Mulu (Carolin et al., 2013). A Matlab Monte Carlo script was used to calculated the absolute age and age errors associated with each U-Th sample using the 234U and 230Th half lives presented in Cheng et al. (2013). The Poisson-process deposition model feature in OxCal(v4.4) was used to interpolate between the eighteen U/Th ages to produce an age model (Bronk Ramsey, 2008; Bronk Ramsey and Lee, 2013). This study reports a d18O and d13C record for the portion of SC02 104.1 to 182.4 mm distance from top of stalagmite. The d18O record spans the full deglaciation, and reveals for the first time distinct d18O variations connected with the Bølling-Allerød onset and the Younger Dryas event.
    Keywords: Borneo; d13C; d18O; Deglaciation; precipitation; rain; SC02; Speleothem sample; SPS; stalagmite; Termination I; tropics; Younger Dryas
    Type: Dataset
    Format: application/zip, 2 datasets
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 16
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    Measured SC02 U/Th isotope activity ratios, calculated ages and monte-carlo derived age error, and Oxcal deposition model U-Th ages and associated age error (2022)
    PANGAEA
    Details
    Publication Date: 2023-11-02
    Description: U-Th ages were calculated using the initial detrital 230Th/232Th value of 111 ± 41 ppm, which was previously calculated for SC02 based on two isochrons measured in separate stalagmites from Secret Cave in Mulu (Carolin et al., 2013). A Matlab Monte Carlo script was used to calculated the absolute age and age errors associated with each U-Th sample using the 234U and 230Th half lives presented in Cheng et al. (2013). The Poisson-process deposition model feature in OxCal(v4.4) was used to interpolate between the eighteen U/Th ages to produce an age model (Bronk Ramsey, 2008; Bronk Ramsey and Lee, 2013).
    Keywords: Age, dated; Borneo; Calculated, using the corrected age; Calendar age; Calendar age, error to older; Calendar age, error to younger; Calendar age, maximum/old; Calendar age, mean; Calendar age, minimum/young; Corrected; Deglaciation; DISTANCE; Measured; Monte Carlo method; OxCal 4.4 Poisson-process deposition model feature; precipitation; rain; Sample ID; SC02; Speleothem sample; SPS; stalagmite; Termination I; Thorium-230/Thorium-232 ratio (0); Thorium-230/Uranium-238 activity ratio; Thorium-230/Uranium-238 activity ratio, error; Thorium-232; Thorium-232/Thorium-230 ratio; Thorium-232/Uranium-238 activity ratio; Thorium-232/Uranium-238 activity ratio, error; tropics; Uncorrected; Uranium-234/Uranium-238 activity ratio; Uranium-234/Uranium-238 activity ratio, error; Uranium-234/Uranium-238 activity ratio (0); Uranium-234/Uranium-238 activity ratio (0), negative error; Uranium-234/Uranium-238 activity ratio (0), positive error; Uranium-238; Year of analysis; Younger Dryas
    Type: Dataset
    Format: text/tab-separated-values, 450 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 17
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    (Table 1) Sr and S isotope compositions of marine barites from ODP Hole 123-765C (2000)
    PANGAEA
    Details
    Publication Date: 2024-01-09
    Description: Barite can precipitate in microenvironments in the water column (marine barite), from supersaturated pore fluids at the oxic-anoxic boundary within marine sediments and where Ba-rich pore fluids are expelled and come into contact with sulfate-rich seawater (diagenetic barite), or from hydrothermal solutions (hydrothermal barite). Barite is relatively resistant to alteration after burial and has been used in paleoceanographic studies to reconstruct seawater chemistry and productivity through time. For such applications it is very important to determine the origin of the barite used, because both diagenetic and hydrothermal barite deposits may not accurately record the open-ocean contemporaneous seawater chemistry and productivity. We show here that it is possible to distinguish between the different types of barite by using Sr and S isotopes along with crystal morphology and size characteristics.
    Keywords: 123-765C; Continuous-flow mass spectrometry; DEPTH, sediment/rock; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Isotope ratio mass spectrometry; Joides Resolution; Leg123; Ocean Drilling Program; ODP; Sample code/label; South Indian Ridge, South Indian Ocean; Strontium-87/Strontium-86 ratio; δ34S
    Type: Dataset
    Format: text/tab-separated-values, 6 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 18
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    Modern and fossil corals from Palmyra and Christmas islands (2010)
    PANGAEA
    In:  Supplement to: Zaunbrecher, Laura K; Cobb, Kim M; Beck, J Warren; Charles, Christopher D; Druffel, Ellen R M; Fairbanks, Richard G; Griffin, Sheila; Sayani, Hussein R (2010): Coral records of central tropical Pacific radiocarbon variability during the last millennium. Paleoceanography, 25(4), PA4212, https://doi.org/10.1029/2009PA001788
    Details
    Publication Date: 2023-12-11
    Description: The relationship between decadal to centennial changes in ocean circulation and climate is difficult to discern using the sparse and discontinuous instrumental record of climate and, as such, represents a large uncertainty in coupled ocean-atmosphere general circulation models. We present new modern and fossil coral radiocarbon (D14C) records from Palmyra (6°N, 162°W) and Christmas (2°N, 157°W) islands to constrain central tropical Pacific ocean circulation changes during the last millennium. Seasonally to annually resolved coral D14C measurements from the 10th, 12th-17th, and 20th centuries do not contain significant interannual to decadal-scale variations, despite large changes in coral d18O on these timescales. A centennial-scale increase in coral radiocarbon from the Medieval Climate Anomaly (~900-1200 AD) to the Little Ice Age (~1500-1800) can be largely explained by changes in the atmospheric D14C, as determined with a box model of Palmyra mixed layer D14C. However, large 12th century depletions in Palmyra coral D14C may reflect as much as a 100% increase in upwelling rates and/or a significant decrease in the D14C of higher-latitude source waters reaching the equatorial Pacific during this time. SEM photos reveal evidence for minor dissolution and addition of secondary aragonite in the fossil corals, but our results suggest that coral D14C is only compromised after moderate to severe diagenesis for these relatively young fossil corals.
    Type: Dataset
    Format: application/zip, 2 datasets
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 19
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    Borneo stalagmite SC02 temperature reconstructions over Termination I by the means of fluid inclusion microthermometry (2022)
    PANGAEA
    Details
    Publication Date: 2024-03-25
    Description: This dataset presents cave temperatures over the last glacial termination from stalagmite SC02 from Secret Cave in Mulu, Northern Borneo (4.063°N, 114.833°E). The temperatures are derived by the means of fluid inclusion microthermometry and published in Løland et al., (2022). The study shows that the cave temperature increased by 4.4 ± 0.3 °C (2 SEM) from the Last Glacial Maximum to the Holocene, amounting to 3.6 ± 0.3 °C (2 SEM) when correcting for sea-level induced cave altitude change. Included in the dataset are also the calculated dripwater delta-18O values.
    Keywords: Age, 14C calibration OxCal (Ramsey, 1995); Borneo; Borneo, Malaysia; Calendar age; Calendar age, maximum/old; Calendar age, minimum/young; Deglaciation; Distance, relative, X; fluid inclusion; fluid inclusion microthermometry; Fluid inclusion microthermometry; Holocene; IRMS; Isotope ratio mass spectrometer; last glacial termination; LGM; Monte Carlo; Reconstructed; Sample ID; SC02_Secret_cave; Sea level; Sea level, standard deviation; speleothem; Speleothem sample; SPS; stalagmite; Temperature; Temperature, cave; Temperature, cave, standard error; Temperature, corrected; Temperature, corrected, standard error; tropics; δ18O, calcite; δ18O, water; δ18O, water, standard error
    Type: Dataset
    Format: text/tab-separated-values, 302 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 20
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    Interlaboratory study for coral Sr/Ca and other element/Ca ratio measurements (2013)
    Wiley
    In:  EPIC3Geochemistry Geophysics Geosystems, Wiley, 14(9), pp. 3730-3750, ISSN: 1525-2027
    Details
    Publication Date: 2015-10-21
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , isiRev
    Format: application/pdf
    Location Call Number Limitation Availability
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    PAPER (OA)
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