]> Back-arc basins (or retro-arc basins) are geologic features, submarine basins associated with island arcs and subduction zones. They are found at some convergent plate boundaries, presently concentrated in the Western Pacific ocean. [Wikipedia] Flysch is a sequence of sedimentary rocks that is deposited in a deep marine facies in the foreland basin of a developing orogen. Flysch is formed under deep marine circumstances, in a quiet and low-energetic depositional environment. [Wikipedia] A foreland basin is a depression that develops adjacent and parallel to a mountain belt. Foreland basins form because the immense mass created by crustal thickening associated with the evolution of a mountain belt causes the lithosphere to bend, by a process known as lithospheric flexure. [Wikipedia] A forearc is a depression (basin) in the sea floor located between a subduction zone and an associated volcanic arc. It is typically filled with sediments from the adjacent landmass and the island arc in addition to trapped oceanic crustal material. [Wikipedia] Intracratonic basins are formed by fluvial sedimentation of an intracratonic area which has undergone sediment sag-loading. [Wikipedia] Intra-arc basins are basins that occur between Fore-arc basins and back-arc basins [Wikipedia] Peripheral (Pro) foreland basins occur on the plate that is subducted or underthrust during plate collision (i.e. the outer arc of the orogen). Successor basins arise from shifting and merging of fore arc, back-arc and intra-arc basins. Basins or sequences that overlap terrane boundaries. [Wikipedia] Retroarc (Retro) foreland basins occur on the plate that overrides during plate convergence or collision (i.e. situated behind the magmatic arc that is linked with the subduction of oceanic lithosphere). [Wikipedia] Transtension basins are oblique tensional environments where stretching takes place. [Wikipedia] Transpression basins are formed during oblique collision of tectonic plates and during non-orthogonal subduction. [Wikipedia]