[superscript 57]Fe Mössbauer spectroscopy studies of chondritic meteorites from the Atacama Desert, Chile: Implications for weathering processes
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Author(s)
Munayco, P.
Munayco, J.
Valenzuela, M.
Rochette, P.
Scorzelli, R. B.
Gattacceca, Jerome
Alternative Title
57Fe Mössbauer spectroscopy studies of chondritic meteorites from the Atacama Desert, Chile: Implications for weathering processes
Date Issued
February 2013
Journal
Hyperfine Interactions
Publisher
Springer Netherlands
Citation
Munayco, P., J. Munayco, M. Valenzuela, P. Rochette, J. Gattacceca, and R. B. Scorzelli. “57 Fe Mössbauer Spectroscopy Studies of Chondritic Meteorites from the Atacama Desert, Chile: Implications for Weathering Processes.” Hyperfine Interactions 224, no. 1–3 (February 5, 2013): 257–262.
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Author's final manuscript
Abstract
Some terrestrial areas have climatic and geomorphologic features that favor the preservation, and therefore, accumulation of meteorites. The Atacama Desert in Chile is among the most important of such areas, known as dense collection areas. This desert is the driest on Earth, one of the most arid, uninhabitable locals with semi-arid, arid and hyper-arid conditions. The meteorites studied here were collected from within the dense collection area of San Juan at the Central Depression and Coastal Range of Atacama Desert. [superscript 57]Fe Mössbauer spectroscopy was used for quantitative analysis of the degree of weathering of the meteorites, through the determination of the proportions of the various Fe-bearing phases and in particular the amount of oxidized iron in the terrestrial alteration products. The abundance of ferric ions in weathered chondrites can be related to specific precursor compositions and to the level of terrestrial weathering. The aim of the study was the identification, quantification and differentiation of the weathering products in the ordinary chondrites found in the San Juan area of Atacama Desert.
MIT Department
Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences
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DOI of Published Version
https://doi.org/10.1007/s10751-012-0755-8
