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Preliminary Interpretations of Atmospheric Stable Isotopes and Argon from Mars Science Laboratory (SAM)Given the broad agreement between C, H, and O isotopic ratios in the modern atmosphere and the ALH 84001 meteorite, it is possible that these reservoirs were established after early atmospheric loss prior to 4 Ga. The preservation of these signals over this long period of history can be explained in several slightly different ways: 1) C, O, and H have remained static in the atmosphere and have not exchanged with the surface over the past 4 Ga; 2) C, O, and H in the atmosphere have potentially varied widely over history but have been continually buffered by larger reservoirs in the crust which have remained unchanged over the past 4 Ga. This second possibility allows for potentially large variations in atmospheric pressure to occur as CO2 is recycled back into the atmosphere from crustal reservoirs or degassed from the mantle.
Document ID
20130011192
Acquisition Source
Johnson Space Center
Document Type
Conference Paper
Authors
Jones, J. H. (NASA Johnson Space Center Houston, TX, United States)
Niles, P. B. (NASA Johnson Space Center Houston, TX, United States)
Webster, C. R. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Mahaffy, P. R. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Flesch, G. J. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Christensen, L. E. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Leshin, L. A. (Rensselaer Polytechnic Inst. Troy, NY, United States)
Franz, H. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Wong, M. (Michigan Univ. United States)
Atreya, S. K. (Michigan Univ. United States)
Conrad, P. G. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Manning, H. (Concordia Coll. Moorhead, MN, United States)
Navarro-Gonzalez, R. (Universidad Nacional Autonoma de Mexico Mexico City, Mexico)
Owen, T. (Hawaii Univ. Honolulu, HI, United States)
Pepin, B. (Minnesota Univ. Minneapolis, MN, United States)
Stern, J. C. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Trainer, M. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Schwenzer, S. P. (Open Univ. Milton Keynes, United Kingdom)
Date Acquired
August 27, 2013
Publication Date
March 18, 2013
Subject Category
Space Sciences (General)
Report/Patent Number
JSC-CN-28406
Meeting Information
Meeting: Lunar and Planetary Science Conference
Location: The Woodlands, TX
Country: United States
Start Date: March 18, 2013
End Date: March 22, 2013
Sponsors: Lunar and Planetary Inst.
Distribution Limits
Public
Copyright
Public Use Permitted.

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