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In-Situ K-Ar Geochronology: Age Dating for Solar System Sample Return Selection

Hurowitz, J. and Aharonson, O. and Channon, M. and Chemtob, S. and Coleman, M. and Eiler, J. and Farley, K. A. and Grotzinger, J. P. and Hecht, M. and Kirschvink, J. L. and McLeese, D. and Neidholdt, E. and Rossman, G. R. and Sinha, M. and Sturhahn, W. and Waltenberg, K. and Vasconcelos, P. and Zimmermann, W. and Beard, B. and Johnson, C. (2011) In-Situ K-Ar Geochronology: Age Dating for Solar System Sample Return Selection. In: The Importance of Solar System Sample Return Missions to the Future of Planetary Science, March 5-6, 2011, The Woodlands, TX.

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The development of an in-situ geochronology capability for Mars and other planetary surfaces has the potential to fundamentally change our understanding of the evolution of terrestrial bodies in the Solar System. For Mars specifically, many of our most basic scientific questions about the geologic history of the planet require accurate knowledge of the absolute time at which an event or process took place. For instance, what was the age and rate of early Martian climate change faithfully recorded in the mineralogy and morphology of surface lithologies (e.g., [1])? Currently, our only means of assessing the absolute age of a surface on a planetary body is through the use of crater counting statistics. This technique is fraught with uncertainty for planets with active geologic surfaces, on the order of billions of years in some cases (e.g., [2]). Accordingly, there is much room for improvement in our understanding of the absolute chronology of the surfaces of rocky planetary bodies.

Item Type:Conference or Workshop Item (Paper)
Related URLs:
URLURL TypeDescription
Hurowitz, J.0000-0002-5857-8652
Aharonson, O.0000-0001-9930-2495
Farley, K. A.0000-0002-7846-7546
Grotzinger, J. P.0000-0001-9324-1257
Kirschvink, J. L.0000-0001-9486-6689
Rossman, G. R.0000-0002-4571-6884
Sturhahn, W.0000-0002-9606-4740
Additional Information:© 2012 Universities Space Research Association.
Group:Keck Institute for Space Studies
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LPI Contribution1611
Series Name:LPI Contributions
Record Number:CaltechAUTHORS:20160301-141416249
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:64928
Deposited By: Colette Connor
Deposited On:02 Mar 2016 22:48
Last Modified:09 Mar 2020 13:18

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