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Why are There So Few Magnetic Anomalies in Martian Lowlands and Basins?The discovery of large areas of strongly magnetized crust on Mars [1,2] provides important information on the timing of both crustal and deeper interior processes on that planet. Critical to an understanding of that timing, as well as to the processes that have contributed to the magnetization and demagnetization of crustal materials, is the geographical distribution of magnetic anomalies discernible from spacecraft orbit. The paucity of resolved magnetic anomalies in the northern lowlands and within and surrounding the best-preserved major impact basins has been noted since the crustal field was first globally mapped [1], but no straightforward explanation of that full pattern has yet been offered. Here we suggest that ancient hydrothermal alteration of magnetic carriers in Martian lowlands and basins may have contributed to the magnetization distribution observed today.
Document ID
20030110662
Document Type
Conference Paper
Authors
Solomon, Sean C. (Carnegie Institution of Washington Washington, DC, United States)
Aharonson, Oded (California Instruments Co. San Diego, CA, United States)
Banerdt, W. Bruce (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Dombard, Andrew J. (Washington Univ. Saint Louis, MO, United States)
Frey, Herbert V. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Golombek, Matthew P. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Hauck, Steven A., II (Carnegie Institution of Washington Washington, DC, United States)
Head, James W., III (Brown Univ. Providence, RI, United States)
Johnson, Catherine L. (Scripps Institution of Oceanography La Jolla, CA, United States)
McGovern, Patrick J. (Lunar and Planetary Inst. Houston, TX, United States)
Date Acquired
August 21, 2013
Publication Date
January 1, 2003
Publication Information
Publication: Lunar and Planetary Science XXXIV
Subject Category
Lunar and Planetary Science and Exploration
Distribution Limits
Public
Copyright
Public Use Permitted.

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IDRelationTitle20030110578Analytic PrimaryLunar and Planetary Science XXXIV
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