Tectonic interpretation of paleomagnetic results from the Upper Devonian griotte of the Montagne Noire, southern France

The Devonian (Famennian) griotte acquired its magnetization during and subsequent to emplacement during the Late Carboniferous-Early Permian. The absence of normal secondary components suggests that tectonic emplacement postdates the period of frequent Carboniferous reversals, that is post-Westphalian A and presumably after the onset of the Kiamian quiet period. A remanence attributed to the Permian, as found in the south of France, has been isolated in a few samples; the remainder of the samples show a stable magnetization with a great circle distribution which passes through the zone of Permian directions.