| 词汇 | pyroclastic |
| 释义 | pyroclastic adjective geology specializeduk /ˌpaɪ.rəˈklæs.tɪk/ us /ˌpaɪ.rəˈklæs.tɪk/ consisting of or relating to small pieces of rock from a volcano: 由火成碎屑组成的;火成碎屑岩的 In 1902, on the Caribbean island of Martinique, a single pyroclastic flow killed more than 29,000 people.1902年，在加勒比海的马提尼克岛，一次火成碎屑流就造成了29000多人死亡。 Rocks like pumice, which are ejected as broken, solid fragments rather than in liquid form, are known as pyroclastic rocks.像浮石这样以碎裂的固体碎片而不是液体形式喷出的岩石被称为火成碎屑岩。 Geology: earthquakes & volcanic eruptions crater dormant fault line geyser lahar lava non-volcanic phreatic quake seismically seismicity seismograph seismology shock wave temblor the Richter scale tremor volcanic volcano vulcanicity You can also find related words, phrases, and synonyms in the topics: Geology - general words Examples of pyroclasticpyroclastic The isolated exposures of the accretionary lapilli-bearing facies along the coastline may alternatively record shoreline or water interaction of pyroclastic flows. Pyroclastic products are widespread and include lapilli tuff, lithic tuff, agglomerate and pyroclastic breccia; compositionally similar lava flows are massive or blocky. The rhyolite has the form of a variably welded and massive, crystal-rich ignimbrite and associated non-welded pyroclastic deposits. Nevertheless, the profusion of pyroclastic deposits signifies a major input to the volcanic-sedimentary record derived from subaerial volcanism. Papers deal with a range of natural systems, including siliciclastic turbidity cur rents and debris flows, pyroclastic density cur rents and avalanches. This memoir is set to become a benchmark publication in physical volcanology and the starting point for future research on pyroclastic density cur rents. No pyroclastic lithic components were found in primary deposits. This lithofacies is thought to represent deposition from highly turbulent flow deposits with high rates of fallout resulting from pyroclastic flows entering a shallow sea. On the western side of the edifice, two lava flows cover the pyroclastic flows and there is no palaeosol between them. These mantling relationships argue against an erosional origin for the bedforms by later pyroclastic flows. It forms the floor of many barrancos, possibly concealing a considerable underlying pyroclastic sequence. Pyroclastic cur rent direction was towards the viewer. Precisely what goes on in pyroclastic density cur rents to produce that diversity has been puzzling volcanologists for decades. The first chapter defines the aims, gives an overview of relevant recent research and introduces central concepts relating to pyroclastic density cur rents. In my opinion, this memoir is essential reading for anyone serious about explosive eruptions, pyroclastic density cur rents and ignimbrites. 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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