Abstract
One of the reference Permian paleomagnetic poles for the African Apparent Polar Wander Path (APWP) was determined by (Morel et al., 1981, Earth Planet. Sci. Lett. 55, 65–74) in the upper unit of the 2000 m thick Abadla redbeds formation (31.2°N, 2.7°W). Unfortunately, this upper unit remains undated, although its age was presumed to be Autunian, whereas microflora fossils characteristic of the Autunian were discovered in the lower unit of the same formation. The paleomagnetic data ( N=11, D=130.1°, I=13.0°, k=138, α 95=3.6° and pole: 29.1°S, 57.8°E, A 95=2.0°) obtained from the better dated Autunian levels must take the place of the previous Abadla pole for the Autunian part of the African APWP. This new pole is very close to the Morel et al.'s pole determined from the unfossiliferous upper unit of the Abadla formation, giving an Autunian age for this upper unit. Consequently, the subsidence of the Abadla basin and the deposition of the whole succession occurred during a period not longer than 20–25 Myr.
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