| 词汇 | island-arc |
| 释义 | BETA island arccollocation in Englishmeanings of islandand arcThese words are often used together. Click on the links below to explore the meanings. island noun[ C ] uk /ˈaɪ.lənd/ us /ˈaɪ.lənd/ a piece of land completely surrounded ... See more at island arc noun[ C ] uk /ɑːk/ us /ɑːrk/ the shape of part of a circle, or other ... See more at arc Examples of island arcisland arc An isolated evolving intraoceanic arc or oceanic continental islandarc environment, or separate source regions for the earlier and later sediments, seem more probable. Rare earth elements and the islandarc tholeiitic series. It was also suggested that most of the lavas were erupted in an islandarc setting, although no primary field relations were reported to support this interpretation. Offshore volcanoes form islands, resulting in a volcanic islandarc. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The term volcanic arc is often confused with the term islandarc. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The term volcanic islandarc is merely a sub-classification of islandarc. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Interbeded between these layers were volcanic deposits, probably from an islandarc. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Any "early warning" systems for these disastrous events will require a more detailed understanding of marine geology of coastal and islandarc environments. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Some convergent margins have zones of active seafloor spreading behind the islandarc, known as back-arc basins. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Trenches are generally parallel to a volcanic islandarc, and about 200km mi from a volcanic arc. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Before the accretion of the islandarc took place, subduction between a continental plate and presumably an oceanic plate was taking place. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. This enriched fluid rises to metasomatize the overlying mantle wedge and leads to the formation of islandarc basalts. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Slab pull and far-field drivers such as ridge push were aiding in closing the distance between the islandarc and the continent. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. All this suggests these formations were initially deposited in an oceanic environment, possibly as seamounts or an islandarc. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. However, oceanic crust is still at the surface between the promontories, not having been subducted beneath the islandarc yet. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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