back arc meaning in English
后弧
回弧
Examples
- Back arc area
弧后地区 - The mariana trough is an actively opening back arc basin that lies at the eastern edge of the philippine sea plate , and in the transition time from rift to sea floor spreading
位于菲律宾板块和太平洋板块之间的马里亚纳海槽，处于弧后张裂向海底扩张的过渡阶段，是深入研究板块运动与弧后扩张动力学过程的理想地区。 - Based on geological environment , bi - model volcanic series , sedimentary formation and geochemical features of volcanic rocks , it is held that the deposits were most probably formed in the carboniferous back arc rifted environment
根据矿床产出地质环境、双峰式火山岩系、沈积建造以及火山岩地球化学特征，推断昆仑式火山岩型块状硫化物铜矿床最可能形成于泥盆纪石炭纪弧后拉张构造环境。 - It is presented that the hydrous fluxing as well as adiaba tic decompression plays an important role in melting of morb - like mantle beneath marina trough . compared with basalts from other back arc basins , it concludes that the magma varies from morb - like to arc - like with the evolution ; during the earlier stage of evolution , there coexist the two morb - like and arc - like lavas , it may be the nature of the magma in back arc basins ( especially in the earlier stage )
综合马里亚纳海槽和其他弧后盆地玄武岩的研究成果发现，弧后盆地特别是早期扩张的弧后盆地，其岩浆产物均具从似岛弧型到似洋中脊型玄武岩的时空演化特征；同时存在岛弧型和morb型两种熔岩，可能是弧后盆地(特别是早期扩张弧后盆地)岩浆作用的一个共同属性。