地质时期

Paleogeotherm is important for understanding the thermal structure of lithosphere at a specific geological time.

古地温曲线是岩石圈在特定地质时期热结构的集中体现。

The concept of metacommunities and the paleontological notion of chronofauna show much promise for synthesis of paleontology and ecology.

集合群落的概念以及地质时期动物群的古生物学认识显示，将古生物学和生态学结合在一起是大有希望的。

These planation surfaces joined once each other imply that the vast southeastern part of China was in a state of peneplain during late geological period.

这些残留的夷平面曾相互连为一休，暗示我国东南部广大地区在晚近地质时期曾一度处丁准平原状态。

Period of geologic time extends from the end of the tertiary period to the present.

地质时期中的第四纪是从第三纪一直到现在。

Quaternary is a very important period for the origin and evolution of human beings,the study area of Hangzhou is very important in the Yangtze River Delta area.

第四纪是与人类的产生和发展密切相关的地质时期，杭州是长江三角洲地区的重要城市。

Silurian The period, some440-405 million years ago, between the Ordovician and the Devonian periods of the Paleozoic.

志留纪：四亿四千万到四亿零五百万年前的一个地质时期。

On the basis of first-hand data, the two periods of stress field since Mesozoic are restored by means of the stereographic projection method,on the other hand,the present stress field is studied by means of the focal mechanisms solution.

根据实测数据，利用赤平投影方法确定研究区地质时期两期应力场，通过震源机制解得到现代应力场。

Our project is based on Cenozoic volcanic rocks and deep seated xenoliths in it to reconstruct the source composition and ctructure. We did field investigation, collection of samples, determination of age and composition characteristics of selected samples. The new achievements are following. 1 recognized a potassic metasomatic source of the Cenozoic volcanic rocks through an integrated research of volcanic rocks and their sources. 2 analysis of TM images suggests the Tuoyun basin is a basin with a volcano group instead of a simple volcano-tectonic basin. We found several volcanic craters and cone, and detected three such craters. 3 systematic reseach of volcanic sections and collection of samples both of volcanic rocks and xenoliths, the later includes peridotite, granulite, gneiss and variety of megacrysts. This is propitious to our further research at this rigion. We would like to point that we collected some peridotite large than 20cm in diameter. It could used to variety of analysis and end the history without mantle chemistry records in the region. 4 we got a U-Pb SHRIMP age of 3.87 Ma for the Kangxiwa basalt.It is the youngest record of U-Pb SHRIMP age in China and provide a chronology restriction for last uplifting of Tibet plateau. 5 the investigation of alkali syenite-synogranite in Taxkogan suggests that the origin of Parmir syntex is related to the Cenozoic magmatism.

本项目立足于从火山岩属性和深源捕掳体反演源区成分与结构两个途径，利用火山岩综合研究成果对地幔源区进行了初步反演，提出源区经受过强烈钾质交代的观点；对重点工作区TM图像进行了初步解译，新发现若干了火山口，并对其中三个火山口作了实地查验，为进一步全面深入开展该区的火山地质学及相关科学问题打下了良好基础，认为托云盆地是一个火山群，而不是一个单一的火山构造盆地；系统测制了火山岩剖面，新采集了一批重要的火山岩和深源岩石捕虏体样品，为下一步工作打下基础，特别是采集到了直径打20cm的幔源橄榄岩包体，可用于各种测试，将可以结束西部造山带没有地幔岩化学分析结果的历史；对康西瓦玄武岩进行了测年分析，取得了我国目前最年轻的锆石U-Pb SHRIMP年龄，对青藏高原挽近地质时期的隆升提供了年代学约束；对帕米尔东缘塔什库尔干碱性岩体的动力学意义进行了探讨，提出青藏高原西部构造结的形成与岩浆活动有关的观点。

These are indications that the fauna Hipparion survive geological period, Linxia palaeogeomorphic Basin and climatic conditions have been the middle and lower reaches of the Yellow River region and differentiated.

上述迹象表明，在三趾马动物群生存的地质时期，临夏盆地的古地貌和气候条件已经和黄河中下游地区有所区别。

Palaeobiology is a discipline between geology and biology. It studies prehistoric life.

古生物学是地质学与生物学之间的一门边缘学科，它是研究地质时期生命的科学。

Finally, according to market conditions and market products this article paper analyzes the trends in the development of camera technology, and designs a color night vision camera.

最后根据市场情况和市面上产品的情况分析了摄像机技术的发展趋势，并设计了一款彩色夜视摄像机。

Only person height weeds and the fierce looks stone idles were there.

只有半人深的荒草和龇牙咧嘴的神像。