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Continental magnetic anomaly constraints on continental reconstructionCrustal magnetic anomalies mapped by the MAGSAT satellite for North and South America, Europe, Africa, India, Australia and Antarctica and adjacent marine areas were adjusted to a common elevation of 400 km and differentially reduced to the radial pole of intensity 60,000 nT. These radially polarized anomalies are normalized for differential inclination, declination and intensity effects of the geomagnetic field, so that in principle they directly reflected the geometric and magnetic polarization attributes of sources which include regional petrologic variations of the crust and upper mantle, and crustal thickness and thermal perturbations. Continental anomalies demonstrate remarkably detailed correlation of regional magnetic sources across rifted margins when plotted on a reconstruction of Pangea. Accordingly, they suggest further fundamental constraints on the geologic evolution of the continents and their reconstructions.
Document ID
19850023286
Acquisition Source
Legacy CDMS
Document Type
Other
Authors
Vonfrese, R. R. B.
(Ohio State Univ. Columbus, OH, United States)
Hinze, W. J.
(Purdue Univ. Lafayette, Ind., United States)
Olivier, R.
(Lausanne Univ. Madison, United States)
Bentley, C. R.
(Wisconsin Univ.)
Date Acquired
August 12, 2013
Publication Date
January 1, 1985
Publication Information
Publication: Purdue Univ. Improving the Geol. Interpretation of Magnetic and Gravity Satellite Anomalies
Subject Category
Earth Resources And Remote Sensing
Accession Number
85N31599
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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