Barth, Aaron M; Ceperley, Elizabeth G; Vavrus, Claire; Marcott, Shaun A; Shakun, Jeremy D; Caffee, Marc W (2023): Beryllium-10 surface exposure age data for moraines in the Beartooth Mountains, Montana, USA [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.954762
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Published: 2023-02-14 • DOI registered: 2023-02-14
Abstract:
Concentration data of beryllium-10 from samples collected along moraines in the Beartooth Mountains of Montana, United States for surface exposure dating. Resulting ages constrain the timing of glaciation in a valley from the latest Pleistocene through the Late Holocene including the onset of Neoglaciation and the Little Ice Age. Available data can be used to recalculate ages and uncertainties as well as provide location specific information including latitude, longitude, and elevation of individual samples.
Beryllium-10 extraction was conducted at the University of Wisconsin - Madison following methods described in Ceperley (2019). Isotopic ratios of 10Be/9Be were measured on the AMS by PRIME Lab at Purdue University. Exposure ages were calculated using the CRONUS online calculator version 3 (Balco et al., 2008, doi:10.1016/j.quageo.2007.12.001) with the Promontory Point production rate (Lifton et al., 2015, doi:10.1016/j.quageo.2014.11.002) and the LSDn scaling scheme (LIfton et al., 2014, doi:10.1016/j.epsl.2013.10.052). Shielding parameters were calculated from field measurements taken with a clinometer and using the CRONUS topographic shielding calculator (Balco et al., 2008. doi:10.1016/j.quageo.2007.12.001).
Keyword(s):
Supplement to:
Barth, Aaron M; Ceperley, Elizabeth G; Vavrus, Claire; Marcott, Shaun A; Shakun, Jeremy D; Caffee, Marc W (2022): 10 Be age control of glaciation in the Beartooth Mountains, USA, from the latest Pleistocene through the Holocene. Geochronology (GChron), 4(2), 731-743, https://doi.org/10.5194/gchron-4-731-2022
Related to:
Balco, Greg; Stone, John O; Lifton, Nathaniel A; Dunai, Tibor J (2008): A complete and easily accessible means of calculating surface exposure ages or erosion rates from 10Be and 26Al measurements. Quaternary Geochronology, 3(3), 174-195, https://doi.org/10.1016/j.quageo.2007.12.001
Ceperley, Elizabeth G (2019): Geochronological Constraints on the Greenland and Laurentide Ice Sheets [dissertation]. University of Wisconsin - Madison
Lifton, Nathaniel A; Caffee, Marc W; Finkel, Robert C; Marrero, Shasta; Nishiizumi, Kunihiko; Phillips, Fred M; Goehring, Brent; Gosse, John; Stone, John; Schaefer, Joerg; Theriault, Bailey; Jull, A J Timothy; Fifield, Keith (2015): In situ cosmogenic nuclide production rate calibration for the CRONUS-Earth project from Lake Bonneville, Utah, shoreline features. Quaternary Geochronology, 26, 56-69, https://doi.org/10.1016/j.quageo.2014.11.002
Lifton, Nathaniel A; Sato, Tatsuhiko; Dunai, Tibor J (2014): Scaling in situ cosmogenic nuclide production rates using analytical approximations to atmospheric cosmic-ray fluxes. Earth and Planetary Science Letters, 386, 149-160, https://doi.org/10.1016/j.epsl.2013.10.052
Coverage:
Median Latitude: 45.001751 * Median Longitude: -109.536927 * South-bound Latitude: 44.996980 * West-bound Longitude: -109.553420 * North-bound Latitude: 45.010390 * East-bound Longitude: -109.521850
Minimum Elevation: 2989.0 m * Maximum Elevation: 3094.0 m
Event(s):
EL-BT-01-06 * Latitude: 44.998870 * Longitude: -109.521850 * Elevation: 2999.0 m * Location: Montana, United States of America * Method/Device: Hammer and chisel
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | ||||
| 2 | Sample comment | Sample comment | Barth, Aaron M | (a) Samples that used Blank-024 in calculations; (b) Samples that used Blank-004 and Blank-005 in calculations | ||
| 3 | Thickness | Thick | cm | Barth, Aaron M | ||
| 4 | Shielding, relative | Shield rel | Barth, Aaron M | Calculated using CRONUS topographic shielding calculator | ||
| 5 | Year of observation | Year obs | a AD | Barth, Aaron M | ||
| 6 | Beryllium-10 | 10Be | atoms/g | Barth, Aaron M | Accelerator mass spectrometry (AMS) | |
| 7 | Beryllium-10, uncertainty | 10Be unc | ± | Barth, Aaron M | Accelerator mass spectrometry (AMS) | |
| 8 | AGE | Age | ka BP | Barth, Aaron M | Calculated using CRONUS online calculator version 3 | Geocode |
| 9 | Age, uncertainty | Age unc | ± | Barth, Aaron M | Calculated using CRONUS online calculator version 3 | |
| 10 | AGE | Age | ka BP | Barth, Aaron M | Calculated using CRONUS online calculator version 3 | Geocode – Moraine age |
| 11 | Age, uncertainty | Age unc | ± | Barth, Aaron M | Calculated using CRONUS online calculator version 3 | Moraine age |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
136 data points
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