 | | Journal (article/letter/editorial) | | Printed in The Netherlands 201 THE TIMEDJELALEN ALKALINE RING-COMPLEX AND RELATED N-S DYKE SWARMS (ADRAR...1986. The Timedjelalen alkaline ring-complex and related N-S dyke swarms (Adrar des Iforas, Mali) - - A...and Nigeria. The Pb-Sr-O data on the Timedjelalen ring-complex and on contemporaneous N-S dykes demonstrate...the Tiralrar-Ichoualen area and on the Timedjelalen ring-complex, situated just southwest of the dykes...a t i o n , e s p e c i a l l y i n t h e ring-complex. The alkaline Iforas province, with typical anorogenic |  | | Journal (article/letter/editorial) | | from the western USA, Virginia, Russia, Malawi, Mali and Madagascar are presented in Table 1. Five samples...to the Lava Creek B ash bed of the Yellowstone complex (G. A. Izett, pers. comm., 2000). Associated phases...22 points. The Timedjelalen ring-complex is part of the Iforas alkaline province of Mali, emplaced just...shield and the West African craton 600 Ma ago. The complex comprises six principal concentric phases, T1 T6...0.68 0.46 0.35 0.25 95.55 0.11 JPL 334 Timedjelalen, Mali 100.83 0.05 0.30 1.56 0.88 0.30 100.96 |
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