Large mega-shearzones dissect the Hoggar, and allow the recognition of various terranes, ranging from Palaeoproterozoic basement to Neoproterozoic juvenile arcs. Because of the dominance of whole rock Rb-Sr age determinations in the past, which have to varying degrees been isotopically disturbed during the various granulite facies metamorphic events, the tectonic makeup and character of the Tuareg Shield has remained enigmatic. This new U-Pb SHRIMP geochronological work will provide some robust age data, based on which new and improved models on the formation of the Hoggar can be formulated.

Proposed (provisional) articles to be prepared are:

1. N. Abdallah, J.P. Liégeois, N. Fezaa, B. De Waele and A. Ouabadi - The cordierite-bearing Temaguessine granite (Hoggar, Algeria).
2. N. Fezaa, J.P. Liégeois, N. Abdallah, B. De Waele and A. Ouabadi - Late Pan-African granites intrusive within the In Ouzzal metacraton (Hoggar, Algeria): the role of rheological contrast in magma generation.
3. J.P. Liégeois, B. De Waele, J. Navez and R. Black - Continental accretion on the western margin of the Saharan metacraton (Aïr, Niger): U-Pb zircon, geochemistry and Sr-Nd isotopes.
4. K. Baziz, J.P. Liégeois, B. De Waele and A. Azzouni-Sekkal - Island arc accretion and Pan-African granitoids: the Tahaggart area (SE Hoggar, Algeria)
5. N. Abdallah, J.P. Liégeois, B. De Waele and A. Ouabadi - Intrusions along a metacratonic mega-shear zone: the Pan-African crustal-derived Ounane batholith and Tisselliline and Tihodaine plutons (Hoggar, Algeria)
6. N. Fezaa, J.P. Liégeois, B. De Waele and A. Ouabadi - The granites of the eastern boundary of the Saharan metacraton (Djanet terrane, Hoggar): strong Pan-African reactivation