Encyclopedia of Geomagnetism and Paleomagnetism

2007 Edition
| Editors: David Gubbins, Emilio Herrero-Bervera

Magnetization, Remanent, Ambient Temperature and Burial Depth from Dyke Contact Zones

  • Kenneth L. Buchan
Reference work entry
DOI: https://doi.org/10.1007/978-1-4020-4423-6_196


Nagata (1961, p. 320) proposed using the directions of remanent magnetization in the contact zone of an igneous intrusion as a geothermometer. Carslaw and Jaeger (1959) and Jaeger (1964) applied heat conduction theory to calculate the variation in maximum reheating temperature with distance from a cooling intrusion of simple geometry. Schwarz (1976, 1977) carried out the first study in which the paleomagnetism across a dike contact and theoretical maximum temperature curves were used to estimate the ambient temperature of the host rocks and the depth of burial of the present erosion surface at the time of dike intrusion.

In principle, the depth of burial method can be applied to the contacts of a variety of intrusions with different shapes. However, calculating the maximum reheating temperature in the vicinity of an intrusion with complicated geometry is difficult. To date, depth of burial studies that use remanent magnetization have usually been confined to dike contacts....

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  • Kenneth L. Buchan

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