Articles | Volume 1, issue 1
Geochronology, 1, 43–52, 2019
https://doi.org/10.5194/gchron-1-43-2019
Geochronology, 1, 43–52, 2019
https://doi.org/10.5194/gchron-1-43-2019
Research article
09 Oct 2019
Research article | 09 Oct 2019

Isolation of quartz for cosmogenic in situ 14C analysis

Keir A. Nichols and Brent M. Goehring

Related authors

Reversible ice sheet thinning in the Amundsen Sea Embayment during the Late Holocene
Greg Balco, Nathan Brown, Keir Nichols, Ryan A. Venturelli, Jonathan Adams, Scott Braddock, Seth Campbell, Brent Goehring, Joanne S. Johnson, Dylan H. Rood, Klaus Wilcken, Brenda Hall, and John Woodward
The Cryosphere Discuss., https://doi.org/10.5194/tc-2022-172,https://doi.org/10.5194/tc-2022-172, 2022
Preprint under review for TC
Short summary
New 10Be exposure ages improve Holocene ice sheet thinning history near the grounding line of Pope Glacier, Antarctica
Jonathan Richard Adams, Joanne S. Johnson, Stephen J. Roberts, Philippa J. Mason, Keir A. Nichols, Ryan A. Venturelli, Klaus Wilcken, Greg Balco, Brent Goehring, Brenda Hall, John Woodward, and Dylan H. Rood
The Cryosphere Discuss., https://doi.org/10.5194/tc-2022-82,https://doi.org/10.5194/tc-2022-82, 2022
Preprint under review for TC
Short summary
Review article: Existing and potential evidence for Holocene grounding line retreat and readvance in Antarctica
Joanne S. Johnson, Ryan A. Venturelli, Greg Balco, Claire S. Allen, Scott Braddock, Seth Campbell, Brent M. Goehring, Brenda L. Hall, Peter D. Neff, Keir A. Nichols, Dylan H. Rood, Elizabeth R. Thomas, and John Woodward
The Cryosphere, 16, 1543–1562, https://doi.org/10.5194/tc-16-1543-2022,https://doi.org/10.5194/tc-16-1543-2022, 2022
Short summary
Holocene thinning of Darwin and Hatherton glaciers, Antarctica, and implications for grounding-line retreat in the Ross Sea
Trevor R. Hillebrand, John O. Stone, Michelle Koutnik, Courtney King, Howard Conway, Brenda Hall, Keir Nichols, Brent Goehring, and Mette K. Gillespie
The Cryosphere, 15, 3329–3354, https://doi.org/10.5194/tc-15-3329-2021,https://doi.org/10.5194/tc-15-3329-2021, 2021
Short summary
New Last Glacial Maximum ice thickness constraints for the Weddell Sea Embayment, Antarctica
Keir A. Nichols, Brent M. Goehring, Greg Balco, Joanne S. Johnson, Andrew S. Hein, and Claire Todd
The Cryosphere, 13, 2935–2951, https://doi.org/10.5194/tc-13-2935-2019,https://doi.org/10.5194/tc-13-2935-2019, 2019
Short summary

Related subject area

Cosmogenic nuclide dating
Combined linear-regression and Monte Carlo approach to modeling exposure age depth profiles
Yiran Wang and Michael E. Oskin
Geochronology, 4, 533–549, https://doi.org/10.5194/gchron-4-533-2022,https://doi.org/10.5194/gchron-4-533-2022, 2022
Short summary
Cosmogenic nuclide weathering biases: corrections and potential for denudation and weathering rate measurements
Richard F. Ott, Sean F. Gallen, and Darryl E. Granger
Geochronology, 4, 455–470, https://doi.org/10.5194/gchron-4-455-2022,https://doi.org/10.5194/gchron-4-455-2022, 2022
Short summary
Cosmogenic nuclide and solute flux data from central Cuban rivers emphasize the importance of both physical and chemical mass loss from tropical landscapes
Mae Kate Campbell, Paul R. Bierman, Amanda H. Schmidt, Rita Sibello Hernández, Alejandro García-Moya, Lee B. Corbett, Alan J. Hidy, Héctor Cartas Águila, Aniel Guillén Arruebarrena, Greg Balco, David Dethier, and Marc Caffee
Geochronology, 4, 435–453, https://doi.org/10.5194/gchron-4-435-2022,https://doi.org/10.5194/gchron-4-435-2022, 2022
Short summary
Technical note: Accelerator mass spectrometry of 10Be and 26Al at low nuclide concentrations
Klaus M. Wilcken, Alexandru T. Codilean, Réka-H. Fülöp, Steven Kotevski, Anna H. Rood, Dylan H. Rood, Alexander J. Seal, and Krista Simon
Geochronology, 4, 339–352, https://doi.org/10.5194/gchron-4-339-2022,https://doi.org/10.5194/gchron-4-339-2022, 2022
Short summary
Reconciling the apparent absence of a Last Glacial Maximum alpine glacial advance, Yukon Territory, Canada, through cosmogenic beryllium-10 and carbon-14 measurements
Brent M. Goehring, Brian Menounos, Gerald Osborn, Adam Hawkins, and Brent Ward
Geochronology, 4, 311–322, https://doi.org/10.5194/gchron-4-311-2022,https://doi.org/10.5194/gchron-4-311-2022, 2022
Short summary

Cited articles

Balco, G., Todd, C., Huybers, K., Campbell, S., Vermeulen, M., Hegland, M., Goehring, B. M., and Hillebrand, T. R.: Cosmogenic-nuclide exposure ages from the Pensacola Mountains adjacent to the foundation ice stream, Antarctica, Am. J. Sci., 316, 542–577, https://doi.org/10.2475/06.2016.02, 2016. 
Balco, G., Todd, C., Goehring, B. M., Moening-Swanson, I., and Nichols, K.: Glacial geology and cosmogenic-nuclide exposure ages from the Tucker Glacier – Whitehall Glacier confluence, northern Victoria Land, Antarctica, Am. J. Sci., 319, 255–286, https://doi.org/10.2475/04.2019.01, 2019. 
Goehring, B. M., Wilson, J., and Nichols, K.: A fully automated system for the extraction of in situ cosmogenic carbon-14 in the Tulane University cosmogenic nuclide laboratory, Nucl. Instrum. Meth. B, 455, 284–292, https://doi.org/10.1016/j.nimb.2019.02.006, 2019. 
Herber, L. J.: Separation of feldspar from quartz by flotation, Am. Mineral., 54, 1212–1215, https://doi.org/10.4144/rpsj1954.25.192, 1969. 
Hippe, K., Kober, F., Wacker, L., Fahrni, S. M., Ivy-Ochs, S., Akçar, N., Schlüchter, C., and Wieler, R.: An update on in situ cosmogenic 14C analysis at ETH Zürich, Nucl. Instrum. Meth. B, 294, 81–86, https://doi.org/10.1016/j.nimb.2012.06.020, 2013. 
Download
Short summary
We describe observations of anomalously high measurements of C-14 made from geologic material. We undertake a systematic investigation to identify the source of contamination, which we hypothesise is sourced from a commonly used method that is used prior to sample analysis. We find that the method does introduce modern carbon to samples and elevates C-14 measurements. We describe a standard procedure that effectively removes contamination from the aforementioned method.