近海火山形成岛屿，就成了火山岛弧（volcanic island arc）。通常，它们形成于一个大洋板块向下俯冲至另一个构造板块的过程，且常常与一个海沟平行（比如西太平洋上的爪哇海沟与巽他弧近乎...
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Triassic island-arc volcanic rocks 三叠系岛弧火山岩
permian-triassic island-arc volcanic rock 二叠系三叠系岛弧火山岩
island arc volcanic rock 岛弧型火山岩
island-arc volcanic rock 岛弧火山岩
During late late Cretaceous-Eocene, volcanic island arc moved eastward and the east China Sea shelf basin was turned into a back-arc basin.
晚白垩世晚期—始新世，火山岛弧向东移动，东海陆架盆地变为弧后盆地。
From the suture line towards the north, an andesite line along Sharburti Mountain was the volcanic island arc developed from middle Ordovician to middle-late Silurian.
由缝合线向北，沙尔布尔提山安山岩线是中奥陶世至中、晚志留世发育起来的火山岛弧。
Its provenance is the Dawazi volcanic island-arc on the west side.
其物源主要来自其西侧的大凹子火山岛弧。
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