Generalized Inversion of Scalar Magnetic Anomalies: Magnetization of the Crust off the East Coast of Canada

  1. Robert F. Mereu,
  2. Stephan Mueller and
  3. David M. Fountain
  1. J. Arkani-Hamed1 and
  2. J. Verhoef2

Published Online: 9 APR 2013

DOI: 10.1029/GM051p0255

Properties and Processes of Earth's Lower Crust

Properties and Processes of Earth's Lower Crust

How to Cite

Arkani-Hamed, J. and Verhoef, J. (1989) Generalized Inversion of Scalar Magnetic Anomalies: Magnetization of the Crust off the East Coast of Canada, in Properties and Processes of Earth's Lower Crust (eds R. F. Mereu, S. Mueller and D. M. Fountain), American Geophysical Union, Washington, D. C.. doi: 10.1029/GM051p0255

Author Information

  1. 1

    Department of Geological Sciences, Brock University, St. Catharines, Ontario, Canada, L2s 3A1

  2. 2

    Atlantic Geoscience Centre, Geological Survey of Canada, Bedford Institute of Oceanography, Dartmouth, Nova Scotia, Canada, B2y 4A2

Publication History

  1. Published Online: 9 APR 2013
  2. Published Print: 1 JAN 1989

ISBN Information

Print ISBN: 9780875904566

Online ISBN: 9781118666388

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Keywords:

  • Earth—Crust—Congresses;
  • Geophysics—Congresses

Summary

A generalized inversion technique is presented in this paper which transforms scalar magnetic anomalies into crustal magnetization while taking into account variations in the directions of the geomagnetic field and the magnetization of the crust over the area considered. It also accounts for the effects ofthe topography ofthe upper and the lower surfaces of the crustal magnetic layer on the magnetic anomalies. the crustal magnetic susceptibility models show better correlation with geological features than do the observed magnetic anomalies. the ocean-continent boundary does not have a pronounced magnetic signature, rather the gradient in the anomalies corresponds to the deepening of the basement. the basement topography in the oceanic regions has only a minor influence on the magnetic anomalies. This suggests that the magnetic anomalies are largely due to the lateral variations in the magnetization ofthe crust.