| 词汇 | lithic-fragment |
| 释义 | BETA lithic fragmentcollocation in Englishmeanings of fragmentThese words are often used together. Click on the links below to explore the meanings. 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 lithic fragmentlithic fragment These correlations between composition and volcanic lithicfragment type are approximate, at best. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Lithic fragments are commonly embedded in the larger pumices. In general, these sandstones are poorly sorted matrix-supported quartz wackes with framework grains of detrital quartz, lithic fragments, feldspar and pyroxene. Lithic sandstones can have a speckled (salt and pepper) or gray color, and are usually associated with one specific type of lithicfragment (i.e., igneous, sedimentary, or metamorphic). From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The few lithic fragments within the deposit represent either xenoliths or reworked mudrock. At the base is a thin, fine-grained, stratified pumice bed 10 cm thick, with abundant small pebbly lithic fragments (10-30 %), which probably reflect an initial vent-clearing episode. In this case there would have been some sediment that was completely disaggregated into the magma, appearing as individual quartz grains or lithic fragments within the tuffs. It is composed of oolites and lithic fragments. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Ignimbrites are made of a very poorly sorted mixture of volcanic ash (or tuff when lithified) and pumice lapilli, commonly with scattered lithic fragments. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Detrital particles can consist of lithic fragments (particles of recognisable rock), or of monomineralic fragments (mineral grains). From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. This tectonic setting provides the source of the lithic fragments, either through arc volcanism, thin-skinned faulting, continental collisions, unroofing, and subduction roll-back. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Greywacke sandstones are a heterogeneous mixture of lithic fragments and angular grains of quartz and feldspar, and/or grains surrounded by a fine-grained clay matrix. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The dunes were created by and are replenished by granitic deposits, specifically quartz, feldspar, lithic fragments, and amphibole. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The compaction is usually more effective on the (typically) weaker lithic fragments in comparison to the stronger, coarser-grained framework grains. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. In contrast, most high-silica ash (e.g. rhyolite) consists of pulverised products of pumice (vitric shards), individual phenocrysts (crystal fraction) and some lithic fragments (xenoliths). 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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