俯冲带 meaning in English
subduction belt
subduction zone
subductionzone
underthrust zone, underthrust belt
Examples
- The authors consider that high - pressure epidote - blueschist , high - pressure eclogite , and ultrahigh - pressure eclogite formed at the same time , but at different depths
认为高压绿帘蓝片岩相、高压榴辉岩相、超高压榴辉岩相是在同一俯冲带内不同深度发生的同期变质作用产物。 - The high - pressured granulites are formed both in the convergent area such as the subduction zones and collision zones and in the spreading area such as the bottom of the island arcs
高压麻粒岩既可形成于汇聚型构造环境如俯冲带、碰撞带等，也可形成于伸展型构造环境如岛弧底部。 - Similarly , any pushing force great enough to buckle a plate and form a new trench and subduction zone would certainly form one immediately adjacent to an existing spreading center
同样，任何大得足以使板块发生挠曲并形成一个新的海沟和俯冲带的推力，也当然会很快在一个现有扩展中心附近形成海沟和俯冲带。 - The southern hainan mafic dykes are strongly enriched in lile with high nb / ta ratios , indicating a magma source reconstructed by silicic - melt through partial melting of ancient subducted slides . however , the northern hainan mafic dykes with chondritic nb / ta ratio should be derived from the fiuid - metasomatized mantle related to ancient subduction zone
琼南基性岩脉强烈富k _ 2o等lile和具有较高nb ta比值，其地幔源区应受到了古俯冲板片部分熔融形成的硅质熔体的改造；而琼中基性岩脉的nb ta比值接近于球粒陨石和morb值，应为古俯冲带含水流体交代的地幔源区的产物。 - The pges abundance patterns of residual mantle rock with a peleo - subduction background is characterized by pd , pt depletion and ir , ru relatively enrichment , while the basalt and basic dyke by the processing of partial melt in the same background take an opposite feature of pd , pt enrichment and ir , ru depletion . the existence of fluid in the subduction zone increases the degree of partial melt on the one hand , and on the other , activates the activity of pd , pt compare to ir , ru , and thus reduces the pd ir and pt ru in residual mantle rock . the pges patterns for basalt and basic dyke from two carboniferous volcano zones to south qoltag and north turpan - hami basin , xinjing uigur autonomous region , take a shape of gentle positive inclined curve with lower pt and pd differentiation and lower pges . all these features are obviously different from that of basic dyke and basalt from typical ophiolite and therefore the author believe that their fluid - rich paleo - subduction zone environment can be ruled out
古俯冲带背景下的残余地幔岩的pges配分以pd , pt明显亏损和ir , ru相对富集为特征，而部分熔融产物的玄武岩和基性岩脉则呈现相反的ir , ru明显亏损和pd , pt相对富集特征。俯冲带中流体的参与一方面增加了部分熔融程度，有利于pd , pt从原始地幔进入熔融相另一方面，流体的作用使得pd , pt相对于ir , ru迁移活动性效率提高，造成地幔岩中