| 词汇 | example_english_continental-crust |
| 释义 | Examples of continental crustThese 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. Mixing calculations illustrate the possible effects of bulk assimilation of continentalcrust. The derivation from or contamination with crustal material explains the observed similarity of the multi-element patterns to typical upper continentalcrust. It is therefore likely that generation of the widespread intermediate-silicic magmas represents an early stage in the formation of continentalcrust. This finding has important implications for the growth of the continentalcrust. The larger modelled upper continentalcrust component is also consistent with the relative abundance of detrital mica of possible extra-basinal origin. This is in agreement with return to more mafic detritus and the proposed increased upper continentalcrust contribution, together at the expense of felsic detritus. Inevitably then, over the course of time, the volume of continentalcrust builds up. The origin and accretionary history of the continentalcrust has long been debated by earth scientists. Unshaded areas enclosed by solid lines are submerged continentalcrust. One of these sources must be in the mantle and the other(s) in the continentalcrust. The data confirm the interpretation of partial melting of, or considerable contamination by, old continentalcrust during magma generation and evolution. This controls the way the continentalcrust responds to plate collision, earthquakes and aseismic slip in subduction zones, and mantle convection. The partial melting conditions are similar to those assumed when basaltic continentalcrust partially melts to form active margin batholiths. Cooling and contamination of mafic and ultramafic magmas during ascent through continentalcrust. The crustal component could be provided by partial melting at the base of continentalcrust or by contamination of more mafic magma with crustal material. Therefore, the continentalcrust has the potential to modify their composition. Empirical approach to estimating the composition of the continentalcrust. Exposed crosssections through the continentalcrust: implications for crustal structure, petrology and evolution. That is, both arc material and old continentalcrust may have contributed to the generation of the granitoids in the source. Estimates of the period of residence of sedimentary components within the continentalcrust are fundamental to investigations of crustal evolution. Exposed crosssections through the continentalcrust: implications for crustal structure, petrology, and evolution. These results therefore support the idea that new continentalcrust may be produced through arc magmatism associated with accretion of oceanic arcs. This value may be changing continuously as magma moves through the continentalcrust. This should result in defining a minimum age range for the hinterland continentalcrust. The obtained data thus suggest at least two major reservoirs, one in the mantle and one in the continentalcrust. This implies that a significant addition of new, rather than recycled, continentalcrust can accompany arc-continent collision and continental arc magmatism. Chemistry, thermal gradients and evolution of the lower continentalcrust. Input of mantle-derived basaltic magmas into the base of the continentalcrust was certainly involved in both caldera formation and basin formation, and by inference, in the preceding plutonism. An open boundary between lower continentalcrust and mantle: its role in crust formation and crustal recycling. Nature and composition of the continentalcrust: a lower crust perspective. Nature and composition of the continentalcrust; a lower crustal perspective. Role of continentalcrust in petrogenesis of orogenic volcanic associations. Long distance horizontal transport is also claimed for many areas of deformed continentalcrust including those considered to have formed by the amalgamation of 'exotic terranes'. A role for lower continentalcrust in flood basalt genesis? Seismic velocity structure and composition of the continentalcrust. The generation of granitic magmas by intrusion of basalt into continentalcrust. Therefore, without other information, it is difficult to determine the mineralogical composition of continentalcrust with a particular velocity at a particular depth without a significant degree of uncertainty. Normal faulting in the upper continentalcrust: observations from regions of active extension. Ultrahigh-pressure metamorphism: tracing continentalcrust into the mantle. The generation of granitic magma by intrusion of basalts into the continentalcrust. A thermotectonic model for preservation of ultrahigh-pressure phases in metamorphosed continentalcrust. The osmium isotopic composition of the continentalcrust. Epicontinental-type calderas are underlain by continentalcrust and are formed by collapse of the roof of an epizonal magma chamber in response to voluminous eruptions of magma. Nature and composition of the continentalcrust: a lower crustal perspective. The continentalcrust: its composition and evolution. The geochemical evolution of the continentalcrust. The thermal structure of the continentalcrust. The continentalcrust: composition and evolution. Earth is the only known solar planet with bimodal hypsography expressed as different kinds of crust, oceanic crust and continentalcrust. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. There are many microcontinents, or continental fragments, that are built of continentalcrust but do not contain a craton. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. This was impossible: oceanic crust is both more dense and more rigid than continentalcrust. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The process starts with heating at the base of the continentalcrust which causes it to become more plastic and less dense. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The destruction of oceanic crust occurs at subduction zones where oceanic crust is forced under either continentalcrust or oceanic crust. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Much of the lower continentalcrust is metamorphic, except for recent igneous intrusions. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. However, where hotspots occur under continentalcrust, basaltic magma is trapped in the less dense continental crust, which is heated and melts to form rhyolites. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The cores of the mountain ranges are in most places formed of pieces of continentalcrust that are over one billion years old. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Continentalcrust is also lost through erosion and sediment subduction, tectonic erosion of forearcs, delamination, and deep subduction of continental crust in collision zones. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. This is the beginning of the continentalcrust subsidence. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The zircons are interpreted to have been brought up from buried continentalcrust as fragments entrained as xenocrysts within the basalt. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Continentalcrust is enriched in incompatible elements compared to the basaltic ocean crust and much enriched compared to the underlying mantle. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Continentalcrust has the highest amount of silicon (such rock is called felsic). From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Diamond-bearing volcanic pipes are closely related to the oldest, coolest regions of continentalcrust (cratons). From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Oceanic crust is also denser than continentalcrust owing to their different compositions. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Depending on the angle of subduction deformation of the continentalcrust was already taking place and thickening the lithosphere. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Plates include both oceanic crust and continentalcrust. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It includes a significant onshore component and extends offshore to the edge of continentalcrust in water depths of up to 4500 m. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Where hotspots occur in continental regions, basaltic magma rises through the continentalcrust, which melts to form rhyolites. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Volcanic beds cover the transition from thinned continentalcrust to oceanic crust. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Some islands lie on sections of continentalcrust that have rifted and drifted apart from a main continental landmass. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. B enrichment in seawater relative to both oceanic crust and continentalcrust; this difference may act as an isotopic signature. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Transitional crust welds continentalcrust to oceanic crust along the lines of continental break-up. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. This magma rose through the mantle wedge and the continentalcrust to produce an arc of extrusive volcanoes with large intrusive batholiths beneath. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Magma development under continentalcrust develops a different type of volcano than magmas that are generated under oceanic crust. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The formation of dacite provides a great deal of information about the connection between oceanic crust and continentalcrust. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. All continentalcrust ultimately derives from the fractional differentiation of oceanic crust over many eons. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Non-volcanic transitional crust consists of stretched and thinned continentalcrust. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. They also found that the oceanic crust was much thinner than continentalcrust. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The alternative interpretation is that the continentalcrust was derived from the partial melting of lower crustal basalts. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Because it contains thick continentalcrust, this lithosphere is less dense than the underlying asthenospheric mantle and normal subduction is disrupted. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The oceanic crust of the sheet is different from its continentalcrust. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The deepest area is oceanic rather than continentalcrust. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Convergent boundaries create foreland basins through tectonic compression of oceanic and continentalcrust during lithospheric flexure. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Granite and rhyolite are types of igneous rock commonly interpreted as products of the melting of continentalcrust because of increases in temperature. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Ancient areas of continentalcrust or cratons formed the nuclei of continents. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Some batholiths are mammoth, paralleling past and present subduction zones and other heat sources for hundreds of kilometers in continentalcrust. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Where hotspots occur under thick continentalcrust, basaltic magma is trapped in the less dense continentalcrust, which is heated and melts to form rhyolites. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Plate movements have also caused fragments of continentalcrust to be rotated away from landmasses so as to form islands. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. A fore-arc setting for most ophiolites also solves the otherwise-perplexing problem of how oceanic lithosphere can be emplaced on top of continentalcrust. 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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