Authors
MCDRFG Casey, C Ebinger, D Keir, R Gloaguen, F Mohamed
Publication date
2006
Journal
Geological Society, London, Special Publications
Volume
259
Issue
1
Pages
143-163
Publisher
The Geological Society of London
Description
Active deformation within the northern part of the Main Ethiopian Rift (MER) occurs within approximately 60 km-long, 20 km-wide ‘magmatic segments’ that lie within the 80 km-wide rift valley. Geophysical data reveal that the crust beneath the <1.9 Ma magmatic segments has been heavily intruded; magmatic segments accommodate strain via both magma intrusion and faulting. We undertake field and remote sensing analyses of faults and eruptive centres in the magmatic segments to estimate the relative proportion of strain accommodated by faulting and magma intrusion and the kinematics of Quaternary faults. Up to half the ≤10 km-long normal faults within the Boset-Kone and Fantale-Dofen magmatic segments have eruptive centres or extrusive lavas along their length. Comparison of the deformation field of the largest Quaternary fault and an elastic half-space dislocation model indicates a down-dip length of …
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Scholar articles
M Casey, C Ebinger, D Keir, R Gloaguen, F Mohamed - Geological Society, London, Special Publications, 2006