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Lukens, William E; Fox, David L (2022): Carbonate and organic matter stable isotopes from two Ranches (Coffee & Mendota) in northern Texas, United States [dataset bundled publication]. PANGAEA, https://doi.org/10.1594/PANGAEA.940788

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Published: 2022-02-08 • DOI registered: 2022-03-12

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Abstract:
We analyzed carbonates and bulk organic matter from paleosols from the upper Miocene Ogallala Formation in the Texas Panhandle, U.S.A. Stable carbon and oxygen isotopes were measured on pedogenic carbonates, rivertine tufa, and reworked carbonate clasts in fluvial channels. Bulk organic matter samples were analyzed along depth gradients in paleosol profiles. Using a Monte Carlo uncertainty analysis, we interpret carbonate δ13C (range = -8.5 to -5.2 ‰ VPDB) and organic matter δ13C values (range = -25.9 to -24.2 ‰ VPDB) to be consistent with C4 biomass low in abundance and variability at the study site, but with large uncertainties that would be overlooked using simple linear mixing model approaches. All carbonate δ18O values showed a very narrow range (-5.4 to -4.0 ‰ VPDB), suggesting a common meteoric water source.
Keyword(s):
C4 vegetation; Miocene; paleosol; pedogenic carbonate; Stable isotope
Related to:
Lukens, William E; Fox, David L (2022): Paleovegetation and paleo-pedogenic properties from the upper Miocene Coffee Ranch fossil site in the North American Great Plains. Palaeogeography, Palaeoclimatology, Palaeoecology, 586, 110760, https://doi.org/10.1016/j.palaeo.2021.110760
Further details:
R code file and associated data files used in Lukens and Fox (2022)
Coverage:
Median Latitude: 35.749351 * Median Longitude: -100.497999 * South-bound Latitude: 35.737600 * West-bound Longitude: -100.529100 * North-bound Latitude: 35.769330 * East-bound Longitude: -100.445120
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Size:
2 datasets

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Datasets listed in this bundled publication

  1. Lukens, WE; Fox, DL (2022): Paleosol organic matter stable isotope determination from two Ranches (Coffee & Mendota) in northern Texas, United States. https://doi.org/10.1594/PANGAEA.940785
  2. Lukens, WE; Fox, DL (2022): Carbonate stable isotope determination from two Ranches (Coffee & Mendota) in northern Texas, United States. https://doi.org/10.1594/PANGAEA.940787