forearc


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forearc

[′fȯr‚ärk]
(geology)
The area between the trench and the volcanic arc of a subduction zone.
References in periodicals archive ?
Tectonics of the Neogene Cascadia forearc basin: Investigations of a deformed late Miocene unconformity.
Earlier exploration wells along the margin suggest the presence of an active petroleum system in the Pacific forearc basins.
Geology and stratigraphy of forearc basin sediments in Hokkaido, Japan: Cretaceous environmental events on the north-west Pacific margin.
(2009) used GPS velocities to investigate the motion of the region between an oceanic trench and its associated volcanic arc (forearc), regions that are found at convergent margins.
Ingersoll, R.V (1983): Petrofacies and provenance of late Mesozoic forearc basin, northern and central California.
The studies provide new data from the upper mantle to the surface, from the forearc to the active foreland basin, and employ a wide array of techniques and methods in geophysics, petrology, geochronology and thermochronology, sedimentology, structural geology, geomorphology, paleoaltimetry, and geodynamic modeling.
Geophysical evidence suggests extension of the JFR beyond the trench (e.g., Papudo seamount; Von Huene et al, 1997; Yanez et al, 2001) with related forearc deformation and intraplate seismicity (Von Huene et al, 1997; Yanez et al, 2002).
The highest density of volcanoes in arc settings occurs along the volcanic front; the boundary between the volcanic arc and the non-volcanic forearc (Fig.