back-arc basin

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back-arc basin

[′bak‚ärk ‚bās·ən]
(geology)
The region (small ocean basin) between an island arc and the continental mainland formed during oceanic plate subduction, containing sediment eroded from both.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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References in periodicals archive ?
40Ar/39Ar geochronology of mafic volcanism in the backarc region of the southern Puna Plateau, Argentina.
The Okinawa Trough is a backarc basin in the rifting to spreading stage characterized by the development of normal faulting of transitional crust (atypical crust with mantle-derived material) and frequent magma intrusions, which provides a favorable geological environment for the development of seafloor hydrothermal systems [8, 41, 42].
Miall, "Interarc and backarc basins on oceanic or transitional crust," in Principles of Sedimentary Basin Analysis, pp.
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.
Fujioka, "Formation of arcs and backarc basins inferred from the tectonic evolution of southeast Asia since the late cretaceous," Tectonophysics, vol.
Backarc tectonic uplift resulted in final closing of the Panama Isthmus at 3.0-2.5Ma (Bartoli, Sarnthein, Weinelt, Erlenkeuser, Garbe-Schonberg & Lea, 2005).
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 7.5 1.0 Thrust 2 Bali-Lombok Z143 R 7.5 2.0 Backarc Thrust 3 Flores Backarc Z153 R 7.5 2.0 Thrust C.
Deep sea research in subduction zones, spreading centres and backarc basins, pp.