Uenzelmann-Neben, Gabriele; Gohl, Karsten (2004): The Agulhas Ridge, South Atlantic; the peculiar structure of a fracture zone. Springer, Dordrecht, Netherlands, In: Jokat, Wilfried (editor), East Antarctic tectonics and sedimentation history from 40 degrees W to 60 degrees E, 25 (3-4), 305-319, georefid:2006-058392
Abstract:
The Agulhas Ridge is a prominent topographic feature that parallels the Agulhas-Falkland Fracture Zone (AFFZ). Seismic reflection and wide angle/refraction data have led to the classification of this feature as a transverse ridge. Changes in spreading rate and direction associated with ridge jumps, combined with asymmetric spreading within the Agulhas Basin, modified the stress field across the fracture zone. Moreover, passing the Agulhas Ridge's location between 80 and 69 Ma, the Bouvet and Shona Hotspots may have supplied excess material to this part of the AFFZ thus altering the ridge's structure. The low crustal velocities and over-thickened crust of the northern Agulhas Ridge segment indicate a possible continental affinity that suggests it may be formed by a small continental sliver, which was severed off the Maurice Ewing Bank during the opening of the South Atlantic. (mod. journ. abst.)
Coverage:
West: -5.0000 East: 25.0000 North: -35.0000 South: -55.0000
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