Palaeomagnetism of some Cenozoic sediments, Cairo-Fayum area, Egypt

Details Palaeomagnetism of some Cenozoic sediments, Cairo-Fayum area, Egypt Palaeomagnetism of some Cenozoic sediments, Cairo-Fayum area, Egypt

Jan 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999pepi..110...71a&link_type=abstract

Physics of the Earth and Planetary Interiors, Volume 110, Issue 1-2, p. 71-82.

Physics

2

Scientific paper

The palaeomagnetic and rock magnetic characteristics of some Cenozoic rocks from the Cairo-Fayum area have been investigated. A total number of 259 oriented core samples were collected at 32 sites located in rocks of Eocene (13 sites), Oligocene (11 sites) and Pliocene (9 sites) ages. Most of these rocks carry a weak but stable remanent magnetisation that is principally carried by hematite. Goethite and magnetite are also found in some samples as subordinate constituents. Careful thermal demagnetisation successfully enabled the isolation of the characteristic remanent magnetisation. Normal and reversed polarities that passed a reversal test have been recorded in the three age groups. This magnetisation is probably of primary origin and reflects the ages of the rocks. The resultant palaeomagnetic poles are considered reliable and represent a good contribution to the African palaeomagnetic database and should help in further refining of the Cenozoic APWP for Africa.

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