back-arc basin

(redirected from Back arc)

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.
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References in periodicals archive ?
During the CMT welding, the influence of welding speed rate in the heating area in the front arc is smaller than that at the back arc, making the heating area a double semi-ellipsoid instead of a single semi-ellipsoid symmetrical at the central line of arc, with the two semi-ellipsoid shape different from each other.
In subduction systems, there is an intermediate mantle zone in the overriding plate, located between the wedge and the neighbouring back arc.
As a result, the Indonesian archipelago comprises a number of Middle to Late Tertiary-aged back arc basins strung out parallel to the main chain of mountains which has been thrown up by the collision of the tectonic plates.
The back arc basins have been filled with deltaic clastics mostly shed off adjacent shield areas.
5 ceased for five years along part of a distant series of linked faults known as the Andaman back arc fault system.
Most of these diffuse seismic zones are found in back arc areas of collision zones, like Flores back-arc faulting behind the eastern end of Sunda arc and western end of Banda Arc.
These tendencies may be amplified, if at the same time, the crust is undergoing extension, such as in back arc regions.
1995), many specimens of Ifremeria nautilei (Boucher and Waren, 1991) were collected in the North Fiji Back Arc Basin at the LHOS site (Ishibashi et al.
By contrast, linear swarms that parallel the edge of a craton may simply be rift/breakup related (Ernst and Buchan, 1997) or may possibly represent a back arc rifting setting (e.
The latter showed his gears to peg back Arc finalist Vancouver Sparky.