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Your search keyword '"Schaen, A."' showing total 15 results
Start Over Author "Schaen, A." Publisher geological society of america
15 results on '"Schaen, A."'

5. Interpreting and reporting 40Ar/39Ar geochronologic data

Author

Schaen, Allen J., primary, Jicha, Brian R., additional, Hodges, Kip V., additional, Vermeesch, Pieter, additional, Stelten, Mark E., additional, Mercer, Cameron M., additional, Phillips, David, additional, Rivera, Tiffany A., additional, Jourdan, Fred, additional, Matchan, Erin L., additional, Hemming, Sidney R., additional, Morgan, Leah E., additional, Kelley, Simon P., additional, Cassata, William S., additional, Heizler, Matt T., additional, Vasconcelos, Paulo M., additional, Benowitz, Jeff A., additional, Koppers, Anthony A.P., additional, Mark, Darren F., additional, Niespolo, Elizabeth M., additional, Sprain, Courtney J., additional, Hames, Willis E., additional, Kuiper, Klaudia F., additional, Turrin, Brent D., additional, Renne, Paul R., additional, Ross, Jake, additional, Nomade, Sebastien, additional, Guillou, Hervé, additional, Webb, Laura E., additional, Cohen, Barbara A., additional, Calvert, Andrew T., additional, Joyce, Nancy, additional, Ganerød, Morgan, additional, Wijbrans, Jan, additional, Ishizuka, Osamu, additional, He, Huaiyu, additional, Ramirez, Adán, additional, Pfänder, Jörg A., additional, Lopez-Martínez, Margarita, additional, Qiu, Huaning, additional, and Singer, Brad S., additional

Published
2020
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8. SPARROW: A DATA MANAGEMENT SYSTEM AND CYBERINFRASTRUCTURE COMPONENT TARGETED AT GEOCHRONOLOGY LABORATORIES

Author

W Dayton, Shaun A. Marcott, Daven P. Quinn, George E. Gehrels, Stephen R. Meyers, John W Williams, Mark D. Schmitz, Shanan E. Peters, Simon Goring, Kurt E. Sundell, Jake Ross, Allen J. Schaen, and Bradley S. Singer

Subjects
Sparrow, Cyberinfrastructure, biology, business.industry, biology.animal, Component (UML), Data management, Geochronology, Environmental science, business, Data science
Published
2019
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12. Interpreting and reporting 40Ar/39Ar geochronologic data.

Author

Schaen, Allen J., Jicha, Brian R., Hodges, Kip V., Vermeesch, Pieter, Stelten, Mark E., Mercer, Cameron M., Phillips, David, Rivera, Tiffany A., Jourdan, Fred, Matchan, Erin L., Hemming, Sidney R., Morgan, Leah E., Kelley, Simon P., Cassata, William S., Heizler, Matt T., Vasconcelos, Paulo M., Benowitz, Jeff A., Koppers, Anthony A. P., Mark, Darren F., and Niespolo, Elizabeth M.

Subjects
*MASS spectrometers, *METADATA, *EXTRATERRESTRIAL beings, *NEUTRONS, *DISPERSION (Chemistry)
Abstract

The 40Ar/39Ar dating method is among the most versatile of geochronometers, having the potential to date a broad variety of K-bearing materials spanning from the time of Earth's formation into the historical realm. Measurements using modern noble-gas mass spectrometers are now producing 40Ar/39Ar dates with analytical uncertainties of ~0.1%, thereby providing precise time constraints for a wide range of geologic and extraterrestrial processes. Analyses of increasingly smaller subsamples have revealed age dispersion in many materials, including some minerals used as neutron fluence monitors. Accordingly, interpretive strategies are evolving to address observed dispersion in dates from a single sample. Moreover, inferring a geologically meaningful "age" from a measured "date" or set of dates is dependent on the geological problem being addressed and the salient assumptions associated with each set of data. We highlight requirements for collateral information that will better constrain the interpretation of 40Ar/39Ar data sets, including those associated with single-crystal fusion analyses, incremental heating experiments, and in situ analyses of microsampled domains. To ensure the utility and viability of published results, we emphasize previous recommendations for reporting 40Ar/39Ar data and the related essential metadata, with the amendment that data conform to evolving standards of being findable, accessible, interoperable, and reusable (FAIR) by both humans and computers. Our examples provide guidance for the presentation and interpretation of 40Ar/39Ar dates to maximize their interdisciplinary usage, reproducibility, and longevity. [ABSTRACT FROM AUTHOR]

Published
2021
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