| 词汇 | greenstone-belt |
| 释义 | BETA greenstone beltcollocation in Englishmeanings of beltThese words are often used together. Click on the links below to explore the meanings. belt noun uk /belt/ us /belt/ a strip of leather or material worn around the waist to support clothes or ... See more at belt Examples of greenstone beltgreenstone belt After the intrusions solidified, new stresses on the greenstonebelt caused movement horizontally along several faults and moved huge blocks of the crust vertically relative to adjacent blocks. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Some of the greenstone belts are more than 3 billion years old. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. These greenstone belts consist of felsic volcanics, felsic batholiths, felsic plutons and sediments aged from 2,700 to 2,670 million years old. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It also incorporates greenstone belts comprising mafic, ultramafic and felsic volcanics which are associated with epiclastic sediments and iron formations. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. They are characterized by greenstone belts, tonalites, and other high-grade metamorphic lithologies. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Greenstone belts containing mineralogy are related to volcanic activity. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Archaean greenstone belts are hypothesized to have been formed from passive margin oceanic crust that became part of an extensive subduction-undercut margin. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Metavolcanic rock is commonly found in greenstone belts. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. This block is a high-grade gneiss terrane; it has no greenstone belts. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Through time, the degree of sediment contained within greenstone belts has risen, and the amount of ultramafic rock (either as layered intrusions or as volcanic komatiite) has decreased. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Rhenium-osmium isotope studies indicates that the gold in those mineral deposits came from unusual three billion year old mantle sourced intrusions known as komatiites present in the greenstone belts. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Rhenium-osmium isotope studies indicate that the gold in those mineral deposits came from unusual 3000 million year old mantle-derived intrusions known as komatiite, present in the greenstone belts. 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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