East African plume

For purposes of computation we used parameters obtained by Ebinger Sleep (1998) for the East African plume. The material properties assumed are a viscosity, h = 0.3x 10 Pas thermal diffusivity k = 0.8 x 10 m s , and specific weight contrast 200 Nm . The scaling constant is = 1/16. The starting plume head volume in the infinite radial model is g = 0.2 x 10 m , which yields Apond = 39 km. The finite widths Ro and Xq are assumed to be 250 km. This... 

We assume that a single plume impinged on the lithosphere beneath central Ethiopia, and that the African plate has moved slowly NNE over the stationary plume since 40 Ma (George et al. 1998) (Fig. 4). Below we discuss the general results, rather than comparison with observations from East Africa, which have been summarized by Ebinger Sleep (1998). Specifically, we use these models to evaluate the effects of plume placement and cratonic size on the distribution of plume material susceptible to melting. 

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