• During late late Cretaceous-Eocene, volcanic island arc moved eastward and the east China Sea shelf basin was turned into a back-arc basin.

    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。

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  • 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.

    缝合线,沙尔布尔提山岩线奥陶世至中、晚志留世发育起来火山岛弧

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  • Its provenance is the Dawazi volcanic island-arc on the west side.

    主要来自其西侧的大凹子火山岛弧

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  • Their original rocks are volcanic rocks, epicontinental clastic sedimentary rocks, and ophiolite of volcanic and island arc tholeiitic series or calcium alkali series.

    岩岩石类型火山岩陆缘碎屑沉积岩火山岛弧拉斑系列系列火山岩、绿岩等。

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  • A basin situated within an island arc and typically containing sediments rich in volcanic debris.

    一种位于岛弧盆地,经火山碎屑沉积物为典型

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  • The ore zone of Daiban mountain has evolved from an epicontinentaloceanic trough and a volcanic island-arc during early paleozoic time.

    大坂山古生代一个火山弧和陆缘演化而来。

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  • They were formed in an island-arc environment of moderate maturity, and the volcanic rocks present in Dongshuixia area might have been formed in an intra-arc rift.

    火山岩形成于具有中等成熟度岛弧环境,其中发育于东水火山岩可能形成于裂谷环境

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  • Under the tectonic backgrounds of island arc belt, fore - arc trench belt, back - arc basin, and epicontinental active belt of late Paleozoic, it has different volcanic rock characteristics.

    古生代岛弧前海沟带、弧盆地陆缘活动构造环境下发育有不同的火山岩组合。

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  • The Middle Ordovician submarine spilite-alkaline volcanic rock association in the Shihuigou area in the Northern Qilian mountains was the product of island arc volcanism.

    祁连山石灰地区发育一套完整的奥陶纪岛弧火山岩系。

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  • The massive sulfides related to felsic volcanic rocks in the back-arc and island arc environments have higher content of gold. According to a vast amount of geo chemical research...

    通常形成于弧后岛弧环境下长英质火山岩有关块状硫化物中的含量较高

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  • The geochemistry of the cherts reflects that the cherts coexisting with island-arc volcanic rocks all formed the background of continental margin basin.

    硅质岩沉积地球化学研究表明岛弧火山岩共生硅质岩为生物成因,形成于大陆边缘盆地的构造背景

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  • The geochemistry of the cherts reflects that the cherts coexisting with island-arc volcanic rocks all formed the background of continental margin basin.

    硅质岩沉积地球化学研究表明岛弧火山岩共生硅质岩为生物成因,形成于大陆边缘盆地的构造背景

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