The shallow marine to subaerial sedimentary and volcanic sequences of the Silurian (Llandoverian to Pridolian) Mascarene belt, lying to the northwest of the Kingston belt, are interpreted to have been deposited in a backarc
basin that opened behind the Kingston arc (Fyffe et al.
According to Schellart (2005), decreased plate velocities or convergence rates would induce slab rollback, with subduction retreat in a seaward direction, that in turn produces backarc
or intra-arc extension in the overriding plate, and generated trench parallel normal faults trending N 130[degrees] E.
1994); this process produces in the central Mediterranean a diffuse area of deformation and fragmentation of lithosphere in subplates and includes a varied complexity of tectonic patterns such as subduction, backarc
spreading, rifting, thrusting, normal and strike-slip faulting and volcanism.
tectonic uplift resulted in final closing of the Panama Isthmus at 3.
D and Tarney J (1984) Geochemical characteristic of basaltic volcanism within backarc
The Tambo Grande deposits are in a very similar setting to the Santa Elena occurrence, and given that both are in what appears to be an oceanic backarc
setting, this district may be a model for Santa Elena.
The author employs several collision models to support his findings and to explain why the traditional model of a backarc
shortening above an eastwardly dipping subduction zone does not fit current data.
Reverse Thrusting Faults 1 Kendeng BackArc
Z133 R 7.
Deep sea research in subduction zones, spreading centres and backarc
However, the ascent of such small volumes of melt is mechanically problematic (see Murphy 2006) and so alkalic magmas in arc settings tend to be restricted to specialized settings, such as local rift zones within the arc or backarc
2]O on crystallization of mid-ocean ridge and backarc
thrust faulting and tectonic uplift along the Caribbean sea coast during April 22, 1991 Costa Rica Earthquake.