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An investigation of MAGSAT and complementary data emphasizing precambrian shields and adjacent areas of West Africa and South AmericaThere is lack of acceptance of quantitative crustal models by specialists on regional geology because of the problem of east-west banding on MAGSAT anomaly maps. The possibility of some of the Earth's magnetic field being created in the mantle below the Curie isotherm is discussed as well as the need to remove spherical harmonics of degrees less than 15 from the anomaly map. Two dimensional models were produced for northern South America that might be considered as working models. These models suggest that the presumed Amazon River depression is better developed near Belem and in the upper Amazon basin than in the central Amazon basin. An attempt is proposed for separating the core field from the crustal field using a flat-Earth model.
Document ID
Document Type
Contractor Report (CR)
Hastings, D. A.
(Technicolor Graphics, Inc. Sioux Falls, SD, United States)
Date Acquired
September 4, 2013
Publication Date
March 31, 1983
Subject Category
Earth Resources And Remote Sensing
Report/Patent Number
NAS 1.26:170327
Accession Number
Funding Number(s)
CONTRACT_GRANT: DI-14-08-0001-20129
Distribution Limits
Work of the US Gov. Public Use Permitted.
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