岛弧

This area was in an arc and rear-arc basin on convergent plates in the Middle Devonian.

其岩石化学及地球化学显示岛弧火山岩特征.

Nb-enriched basalt is a kind of arc basalt that has special geochemical characteristics.

富铌玄武岩是一类具有特殊地球化学特征的岛弧玄武岩.

Furthermore, the granite samples are located at volcanic arc granite area ( VAG ) in trace discrimination diagram.

此外, 在微量元素构造环境判别图解上,花岗岩样品都落在 岛弧 区.

Acid intrusions of Late Caledonian or Early Variscian Epoch result from island arc magmatism.

加里东晚期或华力西早期侵位的酸性侵入岩为岛弧环境产物.

Elsewhere, two plates may shift toward each other and converge along a trench and island arc.

在别的地方, 两块板块又可能相向移动而沿着深海沟和岛弧逐渐聚合.

The epithermal silver deposit and the Kuruko silver depositare distributed over volcanic arcs and island arcs.

火山弧和岛弧控制了浅成低温热液型和黑矿型银矿床.

Pengxian deposit and the Masongling Formationformation are products of island arc volcanism in convergent plate boundary.

证据表明,马松岭组及其所赋存的铜矿床均为会聚性板块边界古火山岛弧的产物.

Shaerbuer Iron deposit was formed in a partial tension environment of an ancient arc zone.

沙尔布尔铁矿床形成于古岛弧区内的局部拉张环境.

Metamorphic basement of the jiangnan Proterozoic Paleo-island arc mainly consists of low-grade metamorphic volcanic sedimentary rocks.

江南元古宙古岛弧的基底变质岩主要由浅变质的岛弧火山—沉积岩系组成.