Under the tectonic backgrounds of island arc belt, fore - arc trench belt, back - arc basin, and epicontinental active belt of late Paleozoic, it has different volcanic rock characteristics.
在晚古生代岛弧带、弧前海沟带、弧后盆地或陆缘活动带等构造环境下发育有不同的火山岩组合。
The weak couplings are in agreement with such tectonic features as young subduction slab, weak flexure strength, large subduction Angle, trench retreating, arc rifting and backarc extension.
耦合弱的特点与俯冲板块年龄小、抗挠强度弱、俯冲角度大、海沟后撤、岛弧裂离和弧后拉张等特点是一致的。
According to stratigraphic compositionand lithochemistry, a"trench-arc-basin system" model for the dual-arrangedisland arc is established on the basis of the "tectonic melange".
依据地层组成结合岩石化学研究，在“构造混杂岩”基础上建立了“双列岛弧”的“沟弧盆体系”模式。
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