U-Th dating of lake sediments: Lessons from the 700 ka sediment record of Lake Junín, Peru — Datasets

Field: Earth and Planetary Sciences (Physical Sciences)

Title: U-Th dating of lake sediments: Lessons from the 700 ka sediment record of Lake Junín, Peru — Datasets Version: 2.0 Date of Release: August 18, 2020 Last Update: September 16, 2020 Identifier: 10.5281/zenodo.4031644 Permalink: https://doi.org/10.5281/zenodo.4031644 Associated publication: Chen, C.Y., McGee, D., Woods, A., Pérez, L., Hatfield, R.G., Edwards, R.L., Cheng, H., Valero-Garcés, B.L., Lehmann, S.B., Stoner, J.S., Schwalb, A., Tal, I., Seltzer, G.O., Tapia, P.M., Abbott, M.B., and Rodbell, R.T. (2020) U-Th dating of lake sediments: Lessons from the 700 ka sediment record of Lake Junín, Peru. Quaternary Science Reviews. 244: 106422 doi: 10.1016/j.quascirev.2020.106422 Link to publication: https://doi.org/10.1016/j.quascirev.2020.106422 Suggested citation: Please reference the associated publication above when using any datasets or materials in this repository. Contact information: Christine Y. Chen, cychen@caltech.edu OR cychen.earth@gmail.com Dates of data collection and generation: February 2016 to July 2019 --------------- VERSION NOTES (v2.0) This online data repository was updated in order to correct errors in the U-Th data tables (Tables A1, A2, and A3) and subsequently update the age-depth model. The corrections impacted the files named 'CYChen et al. (2020) QSR - U-Th Data Tables for PLJ-1 and 1996 cores - v2.xlsx' and 'CYChen et al. (2020) QSR - Input Your Own Depths for Age-Depth Model - v2.xlsx'. No changes have been made to the original versions of other datasets. However, all components of this data repository have been given the "v2" identifier to be consistent with the versioning scheme applied to this data repository as a whole by Zenodo. --------------- DESCRIPTION OF DATA This data repository contains the following datasets and supplementary materials. Specific documentation and, where applicable, instructions of use are included in the readme section of each file. We refer the user to the original manuscript (see above) and the text of the Supplemental Materials published alongside this manuscript for additional general information regarding the collection and generation of these data. SUPPLEMENTARY TEXT AND FIGURES CYChen et al. (2020) QSR - Supplementary Materials.pdf DATA TABLES FOR PLJ-1 and 1996 CORE CYChen et al. (2020) QSR - U-Th Data Tables for PLJ-1 and 1996 cores - v2.xlsx: U-Th data tables for the PLJ-1 and 1996 core (with all digits preserved where possible, for reproducibility and data longevity) CYChen et al. (2020) QSR - Other Data for PLJ-1 core - v2.xlsx: sample locations and corresponding elemental concentrations, carbon coulometry, and color reflectance data CYChen et al. (2020) QSR - Ostracode Analysis for PLJ-1 core - v2.xlsx: ostracode paleoecological data from the PLJ-1 core MODELING URANIUM-THORIUM ISOTOPIC EVOLUTION OF LAKE SEDIMENTS CYChen et al. (2020) QSR - Modeling Spreadsheet for Uranium-Thorium Isotopic Evolution of Lake Sediments - v2.xlsx: spreadsheet for simulating the uranium-thorium isotopic evolution of a sample that has undergone open system behavior with respect to uranium and/or a sample of mixed composition (an impure carbonate) AGE-DEPTH MODEL CYChen et al. (2020) QSR - Input Your Own Depths for Age-Depth Model - v2.xlsx: spreadsheet for extracting the radiometric-based age-depth model generated by Bacon by splice depth