The alkaline magmatism from Niger–Nigeria to Cameroon forms large scale magmatic
provinces across the African plate. It displays a N–S trend from Aïr in Niger to Jos Plateau in …

The surface of the Earth is the ever-changing expression of the dynamic processes
occurring at depth and at or above its surface. However, our ability to “read” landscapes in …

Continental flood basalt eruptions have resulted in sudden and massive accumulations of
basaltic lavas in excess of any contemporary volcanic processes. The largest flood basalt …

Abstract Morgan [1, 2] suggested that continental flood basalts appear as the first volcanic
expression of new mantle plumes. Experimental studies in viscous liquids have shown that …

THE lower part of most Archaean greenstone sequences is dominated by interlayered
basaltic and komatiitic (ultrabasic) flows. These two magma types are petrologically and …

Why Venus lacks plate tectonics remains an unanswered question in terrestrial planet
evolution. There is observational evidence for subduction—a requirement for plate tectonics …

The physics of low Reynolds number plumes is well understood, and this allows a number of
testable predictions to be made about mantle plumes. Mantle plumes are predicted to …

Laboratory studies of fluid dynamic analogs of mantle plumes have led to important
advances in our understanding of the life cycle of hotspots. Melting within the large volume …

The oceanic sector of the Cameroon line consists of three volcanic islands: Principe, São
Tomé and Pagalu. New 40 Ar 39 Ar data for Pagalu basalts, combined with published K …

Strain varies systematically from weakly-developed, outward-dipping, S-tectonites in the∼
3320–3310±10 Ma Mount Edgar Batholith to intensely deformed, subvertical, L-tectonites in …