Warken, Sophie F; Scholz, Denis; Vieten, Rolf-Martin; Winter, Amos; Spötl, Christoph; Miller, Thomas E; Jochum, Klaus Peter; Frank, Norbert; Schröder-Ritzrau, Andrea; Mangini, Augusto (2020): Stable isotope, trace element and radiometric dating data covering 46.2-15.5 ka BP from stalagmite PR-LA-1 (Cueva Larga, Puerto Rico) [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.915000
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Abstract:
We present results of Th/U dating, stable isotope and trace element data from a speleothem from Puerto Rico.
Th/U dating was performed using isotope dilution MC-ICPMS. Activity ratios were corrected for initial Th assuming an detrital weight ratio 232Th/238U = 0.154 ± 0.038 (corresponding to an activity ratio of the detritus in secular equilibrium of (230Th/232Th)detr = 19.79 ± 4.93), and secular equilibrium of the detritus. Ages are calculated using the decay constants by Cheng et al. (2000)). Uncertainties are given as 2σ- range, and do not include half-life uncertainties. Th/U dating shows that stalagmite PR-LA-1 covers the period from 15.4 to 46.2 ka with a growth interruption between 35.5 and 41.1 ka.
Stable isotope samples were drilled with a spatial resolution of 1 mm and measured using an IRMS equipped with a Gasbench.
Element/Calcium ratios of the speleothem were measured by laser ablation ICPMS and were reduced to the resolution of the stable isotope records.
Related to:
Warken, Sophie F; Weißbach, Therese; Kluge, Tobias; Vonhof, Hubert B; Scholz, Denis; Vieten, Rolf-Martin; Schmidt, Martina; Winter, Amos; Frank, Norbert (2022): Last glacial millennial-scale hydro-climate and temperature changes in Puerto Rico constrained by speleothem fluid inclusion δ18O and δ2H values. Climate of the Past, 18(1), 167-181, https://doi.org/10.5194/cp-18-167-2022
Further details:
Cheng, Hai; Edwards, Ross L; Hoff, John A; Gallup, Christina D; Richards, David A; Asmerom, Yemane (2000): The half-lives of uranium-234 and thorium-230. Chemical Geology, 169(1-2), 17-33, https://doi.org/10.1016/S0009-2541(99)00157-6
Coverage:
Latitude: 18.317000 * Longitude: -66.800000
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Size:
2 datasets
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Datasets listed in this publication series
- Warken, SF; Scholz, D; Vieten, R-M et al. (2020): Stable isotope and trace element data covering 46.2-15.5 ka BP from stalagmite PR-LA-1 (Cueva Larga, Puerto Rico). https://doi.org/10.1594/PANGAEA.911486
- Warken, SF; Scholz, D; Vieten, R-M et al. (2020): Thorium / uranium dating of stalagmite PR-LA-1 (Cueva Larga, Puerto Rico). https://doi.org/10.1594/PANGAEA.914993