Timing of volcanism and evolution of the northern Kenya Rift
The northern Kenya Rift is bounded on the west by uplands of Turkana which comprise horst-like blocks that include metamorphic basement rocks, locally overlain unconformably by the Cretaceous Lubur Sandstone, in turn overlain by predominantly volcanic sequences in which relatively thin sedimentary packages occur. Amphibolite facies crystalline rocks of the basement yield Early Palaeozoic K-Ar cooling ages reflecting the Pan-African Orogeny. Volcanism in Turkana was initiated through voluminous...[Show more]
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