Sedimentary basin
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Sedimentary basins are region-scale depressions of the Earth's crust where subsidence has occurred and a thick sequence of sediments have accumulated to form a large three-dimensional body of sediment
Typical rift formation in cross-section
Schematic cross-section of a typical convergent plate boundary showing formation of back-arc and forearc basins
Trench fill sedimentary basin in the context of a convergent plate boundary
Shematic diagram of a strike-slip tectonic setting with fault bends creating areas of transtension and transpression
Forearc
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A forearc is a region in a subduction zone between an oceanic trench and the associated volcanic arc. Forearc regions are present along convergent margins and eponymously form 'in front of' the volcan
Cross-section of a subduction zone and back-arc basin. The forearc is the region between the trench and the volcanic arc.
Types of forearcs