1) island arc retreating towards ocean
岛弧向洋后退
2) oceanic island arc
大洋岛弧
1.
The result of this research indicates that the tectonic setting where the provenance is most from the oceanic island arc and a few from the continental island arc,the studying area is a basin round oceanic island arc.
结果显示,晚三叠世巴颜喀拉山群物源主要来自大洋岛弧,少量来自大陆岛弧,表明当时研究区处于邻近大洋岛弧的周缘前陆盆地环境。
2.
The adakites and adakite-like rocks of Sulawesi can be divided into two types: the first belonging to tholeiitic/calc-alkaline series may be considered to be oceanic island arc and/or continental margin volcano arc with characteristics of REE pattern of oceanic island arcs(O type).
本区埃达克岩和埃达克质岩可划分为两种类型:第一种为岛弧拉斑/钙碱性系列,见于大洋岛弧和陆缘火山弧,其REE配分模式属于大洋岛弧型(O型);另一种产于大陆板块内部,与陆-陆碰撞和后碰撞构造环境有成因联系,属于大陆型(C型)埃达克岩。
3) oceanic island arcs
海洋岛弧
4) back island arc
后岛弧
5) Pacific island arc
太平洋岛弧
6) rear arc oceanic basin
弧后洋盆
补充资料：岛弧
| 岛弧 island arc 呈弧形排列的群岛。弧形凸面朝向海洋，岛弧外侧常有深的海沟，是分割大洋盆地和边缘盆地的重要构造地貌单元。岛弧属构造活动地区，有强烈的地震和火山活动，如太平洋上的千岛群岛、阿留申群岛等。板块学说认为，岛弧是大洋板块向大陆板块俯冲时，大陆板块受挤上拱，隆起而成。 |
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条