Author/Authors :
BOUDZOUMOU, Florent Université Marien Ngouabi - Faculté des Sciences - Département de Géologie, Congo , BOUDZOUMOU, Florent Université d’Aix-Marseille - CEREGE, CNRS, France , VANDAMME, Didier Université d’Aix-Marseille - CEREGE, CNRS, France , AFFATON, Pascal Université d’Aix-Marseille - CEREGE, CNRS, France , GATTACCECA, Jérôme Université d’Aix-Marseille - CEREGE, CNRS, France , OUAZZANI, Hassane Université Moulay Ismail - Faculté des Sciences - Département de Géologie, Maroc , BADRA, Lakhlifi Université Moulay Ismail - Faculté des Sciences - Département de Géologie, Maroc , MAHJOUBI, Elmahjoub Université Moulay Ismail - Faculté des Sciences - Département de Géologie, Maroc
Abstract :
A paleomagnetic study was undertaken on samples collected from seven sites of the exhumed and eroded Ait-Abdallah and Kerdous antiforms in the Moroccan Anti-Atlas of the West African craton. These sites are located in the Adoudounian Formation considered as of Neoproterozoic–Cambrian age. The magnetic mineralogy is represented essentially by magnetite and titanohematite. Magnetization is carried by three components respectively of high-temperature (500-670°C), medium-temperature (350-470°C) and lowtemperature (NRM-300°C). Plotted in Gondwana Apparent Polar Wander Path, the high and medium temperature components close to the Permian pole and determine Permian overprint directions. The low temperature component closes to the present day field and corresponds to the present overprint day. This study shows that Permian overprint largely affect the Anti-Atlas area.
NaturalLanguageKeyword :
Paleomagnetism , Anti , Atlas , West , African craton , Adoudounian Formation , Neoproterozoic , Cambrian
