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Subsurface Structure of the Ismenius Area and Implications for Evolution of the Martian Dichotomy and Magnetic FieldThe Martian dichotomy divides the smooth, northern lowlands from the rougher southern highlands. The northern lowlands are largely free of magnetic anomalies, while the majority of the significant magnetic anomalies are located in the southern highlands. An elevation change of 2-4 km is typical across the dichotomy, and is up to 6 km locally. We examine a part of the dichotomy that is likely to preserve the early history of the dichotomy as it is relatively unaffected by major impacts and erosion. This study contains three parts: 1) the geologic history, which is summarized below and detailed in McGill et al., 2) the study of the gravity and magnetic field to better constrain the subsurface structure and history of the magnetic field (this abstract), and 3) modeling of the relaxation of this area. Our overall goal is to place constraints on formation models of the dichotomy by constraining lithospheric properties. Initial results for the analysis of the geology, gravity, and magnetic field studies are synthesized in Smrekar et al..
Document ID
20040200950
Acquisition Source
Headquarters
Document Type
Conference Paper
Authors
Smrekar, S. E. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Raymond, C. A. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
McGill, G. E. (Massachusetts Univ. Amherst, MA, United States)
Date Acquired
September 7, 2013
Publication Date
January 1, 2004
Publication Information
Publication: Workshop on Hemispheres Apart: The Origin and Modification of The Martian Crustal Dichotomy
Subject Category
Lunar And Planetary Science And Exploration
Distribution Limits
Public
Copyright
Public Use Permitted.

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IDRelationTitle20040200915Collected WorksWorkshop on Hemispheres Apart: The Origin and Modification of the Martian Crustal Dichotomy
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