Stability of remanence and paleomagnetic studies of some chromite ores from Barramiya and Allawi occurrences, Eastern Desert, Egypt

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Scientific paper

Rock magnetic investigations were carried out on natural Precambrian chromite ore at two occurrences in the Eastern Desert, Egypt. A medium/high coercivity component of remanence of reversed polarity can be defined. The mean direction of the five sites studied is D = 198°, I = -44°, with k = 55 and α95 = 10°. Ore microscopic and magnetic examinations indicate the absence of magnetite and it is shown that the chromite mineral (ferrimagnetic phase) could be the carriers of the high stable NRM. The result of paleopole position of these Precambrian chromites are presented and discussed in the context of its age and the apparent polar wander path (APWP) of Africa.

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