| 词汇 | example_english_rock-fragment |
| 释义 | rock fragmentcollocation in Englishmeanings of rockand fragmentThese words are often used together. Click on the links below to explore the meanings. Or, see other collocations with fragment. rock noun uk /rɒk/ us /rɑːk/ the dry solid part of the earth's surface, or any large piece of this that sticks up out of the ground or ... See more at rock fragment noun[C] uk /ˈfræɡ.mənt/ us /ˈfræɡ.mənt/ a small piece or a part, especially when broken from ... See more at fragment Examples of rock fragmentThese 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. The inner boundary of a weathering rind approximately parallels the outer surface of the rockfragment in which it has developed. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. During the excavation, a portion of a charcoal drawing on a rockfragment was found which was radiocarbon dated at 28,000 years. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. These can include grains which are sand-sized themselves (a granitic rockfragment), or finer-grained materials (shale fragments). From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The volcaniclastic siltstone is composed of crystals (olivine, pyroxene, quartz), glass (globules and irregularly shaped shards) and rock fragments. The rock fragments are mainly rhyolite, granite, and spherulite of rhyolite, with very small amounts of muscovite-quartz schist and hornfels exhibiting a granoblastic texture. Most of these sedimentary rock fragments are restricted to coarse arenites and fine diamictites. Two rock fragments comprising a mosaic of quartz and feldspar 1 mm across were identified. Pre-sulphide brecciation is common with dolomite, quartz and minor calcite cementing rock fragments. Proportions were not measured because of small area of rock fragments. The term greywacke can be confusing, since it can refer to either the immature (rockfragment) aspect of the rock or the fine-grained (clay) component of the rock. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The mineral is thought to have formed as a replacement product of unstable rock fragments. A possibility is volcanic eruption, which would readily release water from the magma resulting in an increased solidus temperature, thus enhancing mineral growth on the existing rock fragments. A wide variety of shallow-water bioclasts are present, including microbial carbonate, coral, echinoids and shell fragments, together with chert, sandstone, siltstone, dolomite, and both igneous and metamorphic rock fragments. Dolomite emplacement must have been a consequence of high fluid pressure to cause such brecciation and allow suspension of rock fragments in the dolomite. Rounding of rock fragments less common in the mesothermal regime, as the formational event is brief. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Xenocrysts or rock fragments incorporated during the violent eruptional and depositional events are also encountered. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Rock fragments with weathering rinds normally are discrete clasts ranging is size from pebbles to cobbles or boulders. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The most varied rock fragments melt and shed their salts into the water, mineralising it. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. They commonly contain tongues of mineral and organic horizons, organic and mineral intrusions and oriented rock fragments. 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. Want to learn more? Go to the definition of rock Go to the definition of fragment See other collocations with fragment |
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