弧前盆地亦称外弧凹槽或岛弧 — 海沟间隙盆地。它分布在海沟斜坡折点和岩浆弧的前锋之间。靠近俯冲带一侧常发育挤压褶皱和逆冲断层，靠岩浆弧一侧可以出现正断层。
前陆盆地(foreland basin)与弧前盆地(fore-arc basin):先解释一下“前”和“后” 的定位：在海边上，面朝大海，背向大陆,你面朝的就是“前”，你背对的就是“后”。
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... 地堑前盆地 pregraben basin 弧前盆地 fab; forearc basin 弧后陆前盆地 retroarc foreland basin ...
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With previous results, theGuanjiagou Group is in Bekou forearc basin and it is presumed that thesedimentary detritus was from eastsouthern island arc.4.
结合前人成果，关家沟组位于碧口弧前盆地，推测关家沟组内的沉积物主要来自南东向的岛弧环境。
参考来源 - 基于GIS的区域环境分析决策系统及其在北京市城近郊区的应用·2,447,543篇论文数据，部分数据来源于NoteExpress
相序、组构、沉积特征和物源区综合分析表明，横丹浊积岩系为弧前盆地充填物。
An integrated analysis of the facies sequence, fabrics, sedimentary characteristics and provenance indi-cates that the Hengdan turbidite sequence is turbidity sediments fillings.
沉积物被从两侧的弧前脊和岛弧冲到盆地，使该处地壳承重增加，形成洼地。
Sediments washed into the basin from both the fore-arc ridge and island arc weigh down the crust in this area, creating the depression.
南海地区新生代沉积盆地有四类：张裂盆地、走滑拉张盆地、前陆盆地和前弧盆地。
There have four kind of basins in the South China Sea area: rifting basin, strike-slip rifting basin, fore-land basin and fore-arc basin.
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