单词	oceanic
释义	oceanico‧ce‧an‧ic /ˌəʊʃiˈænɪk◂ $ ˌoʊ-/ adjective [usually before noun] Examples EXAMPLES FROM THE CORPUS Comparison of their chemistry with that of magmas erupted on oceanic islands demonstrates the plumes differ chemically from the upper mantle. Cool, thick, old oceanic lithosphere is gravitationally unstable as it is generally denser than the asthenosphere over which it lies. Power surfers are towed behind a jet-ski into massive oceanic swells that move too fast to catch by paddling conventional surfboards. Some of the sea-floor sediments, muds, and oozes sitting on top of the oceanic plate also get melted. The second category is closely related to oceanic trenches and their associated island arcs or mountain belts. This would be expected from differences in the density and thickness of continental and oceanic crust. Thus the volcanic rocks formed are drastically different from their oceanic counterparts. Tsunamis are caused by violent oceanic events such as earthquakes, undersea landslides, volcanic explosions, and impacts. Collocations COLLOCATIONS FROM THE CORPUSNOUN► crust · Continental lithosphere stands higher than oceanic lithosphere because continental crust is both of greater thickness and lower density than oceanic crust.· This would be expected from differences in the density and thickness of continental and oceanic crust.· The composition of displaced terranes ranges from that of typical oceanic crust to significantly less dense granitic rock with clear continental affinities.· It appeared that these offsets marked some kind of lateral movement between adjacent sections of oceanic crust.· Its purpose is to gather sufficient information to answer questions about magma chambers in oceanic crust.· From these observations, Hofmann and I proposed that plumes consist in part of deeply subducted oceanic crust and sediment.· Hess mistakenly thought that the oceanic crust consisted of altered peridotite, the material of the mantle itself.· Alternatively, subducted oceanic crust may be able to pull adjacent continental crust down into the asthenosphere. ► island · Comparison of their chemistry with that of magmas erupted on oceanic islands demonstrates the plumes differ chemically from the upper mantle.· Darwin himself had explained the strange inhabitants of isolated oceanic islands such as the Galapagos in terms of accidental migrations from the nearest mainland.· This period was sufficiently long for the widespread planation of oceanic islands, many of them volcanic. ► lithosphere · Continental lithosphere stands higher than oceanic lithosphere because continental crust is both of greater thickness and lower density than oceanic crust.· The heavy oceanic lithosphere descends into the mantle, beneath the lighter continental lithosphere.· The sequence of continental-margin orogen development begins with the subduction of oceanic lithosphere at, or close to, a continental margin.· Perhaps more significant is the thickening of oceanic lithosphere as it moves away from mid-oceanic ridges.· Such mountain belts develop when the oceanic lithosphere originally lying between two continents is eventually consumed.· Cool, thick, old oceanic lithosphere is gravitationally unstable as it is generally denser than the asthenosphere over which it lies.· Where oceanic lithosphere is subducted beneath another oceanic part of a plate the associated volcanic activity and produce an intra-oceanic island arc.· Subduction of oceanic lithosphere beneath a plate carrying continental crust gives rise to a continental-margin orogen. ► plate · Some of the sea-floor sediments, muds, and oozes sitting on top of the oceanic plate also get melted. relating to the ocean:  an oceanic island oceanic waters
随便看	equitable equitably Equity equity equivalence equivalent equivocal equivocate equivocation ER er -er ERA era eradicate eradication erase eraser Erasmus, Desiderius erasure -erati ere e-reader Erebus, Mount erect

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