Tectonic model of the Malaŵi rift, Africa

摘要: Abstract In the seismically active Malaŵi rift (Africa), uplifted segments of border fault system flank basins with different acoustic stratigraphies, sediment thicknesses and styles faulting. Regionally curvilinear bound sigmoidal-shaped linked along length in accommodation zones. Accommodation zones that trend oblique to approximately N-S occur within valley bounded by segments, suggesting little thinning occurs beneath elevated flanks. Cross-sectional morphologies patterns depend on geometrical arrangement these are similar those observed Tanganyika rift. Border locally may reactivate or have an orientation sub-parallel Proterozoic-Mesozoic structures, but segmentation alternating asymmetries show no consistent relationship pre-existing faults lithologic contacts. The central parts where maximum vertical displacements been observed, separated from any adjacent segment 50–90 km both rifts. uniform separation rifts, despite their differences age geologic setting, suggests stress concentrations average spatial wavelength 70