Encyclopedia of Geomagnetism and Paleomagnetism

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

Magnetization, Remanent, Fold Test

  • Jaime Urrutia‐Fucugauchi
Reference work entry
DOI: https://doi.org/10.1007/978-1-4020-4423-6_197
Establishing the age of the remanence acquisition with respect to the origin of the rock unit or age of structural deformation events is critical in the interpretation of paleomagnetic data. It is also important to establish that the magnetic minerals carry a stable magnetization over geological timescales. These two related questions remain difficult problems, which often affect the application of paleomagnetism to tectonic, stratigraphic, and paleogeographic problems (Cox and Doell, 1960; Irving, 1964). It is therefore not surprising that early in the development of the paleomagnetic method, several field and laboratory tests were developed and applied to a range of geological contexts. Among them, an elegant simple answer was put forward to constrain the age of remanence acquisition by using field information by Graham ( 1949). He realized that in folded rocks a simple test based on rotation of the magnetization directions about the local strike could determine if the remanence was...
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© Springer-Verlag 2007

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  • Jaime Urrutia‐Fucugauchi

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