Quaternary period
第四纪
常用释义
英式发音
美式发音
基本释义
- 第四纪：地质年代的一个时期，距今约260万年至今，包括更新世和全新世两个阶段，地球气候变化剧烈，冰川时期和间冰期交替出现，人类文明逐渐发展。
例句
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1·Woolly mammoths died out during the late quaternary period.猛犸象在第四纪晚期灭绝了。
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2·The glacier influence of Quaternary Period affect soil development obviously;土壤发育受第四纪冰川影响明显，成土年龄短；
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3·The external cause was due to the influence of the Quaternary Period glacier.农业起源的外因则是受晚更世冰期的影响。
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4·The Cenozoic era is composed of tertiary period followed by quaternary period.新生代是由第三纪和第四纪组成的。
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5·The Luannigou ore field riches with alluvial gold of Quaternary Period and is the favorable target for rock gold.乱泥沟矿区第四系砂金矿产丰富，是寻找岩金的有利靶区。
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6·Loess deposition is a special kind of dust-sediment that came into being under particular environments in quaternary period.黄土是指第四纪时期特定环境条件下形成的一种特殊的土状沉积物。
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7·Dayangshu Basin was in extensional setting in the Quaternary period, and a series of small extensional half-grabens were formed.第四纪大杨树盆地具有伸展的特征，发育一系列小型伸展断陷。
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8·The west branch fault has been of strongly active since the Quaternary period and its activity is of difference at different segements.西支断裂第四纪以来活动强烈且具明显的差异性，东支断裂从晚第三纪末起已停止活动。
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9·The new data have been provided for the lake evolution, the climate change, the paleogeographic changes and the divide Quaternary period.为研究该区湖泊演化、气候变化、古地理变迁及第四系划分等提供了新资料。
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10·Jiaxing area belongs to representative lacustrine plain zone. Its Quaternary period stratum has several evident sediment cycles "soft to hard".嘉兴地区为典型的湖积平原，第四系地层具有多个明显“软-硬”交替的沉积旋回。