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Geochronology of the Nabwal Hills: a record of earliest magmatism in the northern Kenyan Rift Valley

McDougall, Ian; Watkins, Rod D


The Nabwal Hills, northeast of Lake Turkana, contain a record of magmatism associated with the initiation and early development of the East African Rift System in northernmost Kenya. The predominantly volcanic Asille Group, 1400 m thick, directly overlies metamorphic basement and comprises a sequence of basaltic lava flows with significant intervals of rhyolitic pyroclastic units, and minor intercalations of fluviatile sediments. The basement gneisses yield K-Ar cooling ages on biotite of 510...[Show more]

CollectionsANU Research Publications
Date published: 2006
Type: Journal article
Source: Geological Magazine
DOI: 10.1017/S0016756805001184


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