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isotopic geological age
相关语句
  同位素地质年龄
     Shi qiao rock clusters are a suit of shallow metamorphised clastic rocks of normal sedimentation with an isotopic geological age of (620±22) Ma.
     石桥岩群是一套浅变质的正常沉积碎屑岩 ,同位素地质年龄 ( 6 2 0± 2 2 )Ma。
短句来源
     The southern Xiaochangshan granitic intrusive is an important geological body in Beishan tectonic belt, Xinjiang, produced by the second sequence magmatic intrusion in the middle Hercynian period. The superunit is composed of five units covering an area of about 132.9 km 2. The isotopic geological age of the fourth unit is 320.2±23 Ma (zircon, lead_lead age method).
     小长山南超单元花岗岩是新疆北山构造带中重要的地质体 ,为华力西中期第 2序次岩浆侵入活动的产物 ,包括 5个单元 ,出露面积 132 .9km2 ,其中第 4单元同位素地质年龄 32 0 .2Ma±2 3Ma(锆石 ,Pb -Pb法 )。
短句来源
  同位素年龄
     The isotopic geological age of plagioclase amphibolite from the Taihua Group in Luoning County,Henan Province,China has been determinated by whole-grain evaporation on single zircon using a double-filement and step-heating 40Ar/39Ar spectra of amphibole.
     运用单颗粒锆石逐层蒸发法和角闪石~(40)Ar/~(39)Ar阶段加热法研究了河南洛宁太华岩群斜长角闪岩的同位素年龄
短句来源
  “isotopic geological age”译为未确定词的双语例句
     This paper utilizing the statistical distributional characteristics of the isotopic geological age data in South China, mentions the most frequent time's district and the greatest crest period of the granitic magma activity in this region.
     利用华南花岗岩同位素年令数据的统计分布特征,提出了该地区花岗岩岩浆活动最频繁的时间区间和活动规模最大的峰值期;
短句来源
     The ages for these unites have been systematicallydetermined by means of 40~Ar/39~Ar step-heating dating and K-Ar dating. Based on these data, a isotopic geological age table of the area is establi-shed.
     主要采用~(40)Ar/~(39)Ar阶段升温法和K-Ar稀释法对单元和超单元进行系统的年代学研究,并编制出该区花岗岩同位素地质年代表。
短句来源
  相似匹配句对
     ISOTOPIC GEOLOGICAL FEATURES OF THE DONGGOUBA MULTIMETAL DEPOSIT
     东沟坝多金属矿床同位素地质特征
短句来源
     Progress in Isotopic Measurement of N and O in Nitrates and Their Geological Signficance
     硝酸盐中氮和氧同位素比值的测定及其地质意义
短句来源
     THE ISOTOPIC AGESOF THE BAOBAN GROUP IN HAINAN AND ITS GEOLOGICAL SIGNIFICANCE
     海南抱板群同位素年龄及其地质意义
短句来源
     Characteristics, Isotopic age of Wushan Ophiolite and its Geological Significantce
     武山蛇绿岩的特征、同位素年代及其地质意义
短句来源
     ISOTOPIC AGE OF LONGLIN GRANITE IN FUJIAN AND ITS GEOLOGICAL IMPLICATION
     福建龙岭岩体同位素年龄及其地质意义
短句来源
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The authors of this article have been to Zhijin Cavern for several times to make investigatons and have collected eight geological samples. The U isotopic geological age measurement of the samples were separately made. Based on the measurement results and according to the geological and hydrogeological conditions in that region, the authors deal with the origin mechanism and models of some important rocks of Zhijin Cavern in this article.

根据织金洞的区域地质(即地层、构造、地貌等)条件以及水文地质特点,笔者等在该洞采起了八个地质样品。进行铀系年龄测定.文章着重介绍了该洞八个样品铀系测定的方法、原理、测试技术、测试结果,并通过结果分析,对织金洞以及洞中某些重要洞石的形成原因、机理、模式作了初步探讨.

This paper utilizing the statistical distributional characteristics of the isotopic geological age data in South China, mentions the most frequent time's district and the greatest crest period of the granitic magma activity in this region. According to the near normal distribution curve, magma activity tends from weak to strong to weak again and intrusive ctive centre tends from north to south The inference is proved by one

利用华南花岗岩同位素年令数据的统计分布特征,提出了该地区花岗岩岩浆活动最频繁的时间区间和活动规模最大的峰值期;由统计分布曲线的近正态分布,提出了该区岩浆活动由弱变强再变弱的变化趋势;在空间上认为华南岩浆侵入活动中心有向南迁移的趋势,这一推断通过所进行的一维趋势分析得到了佐证。

According to concept of unite and super-unite, the Darongshan-Shiwanda-shan granitic batholith in Guangxi is divided into Shinan, Kuishan, Liuwan-shan and Wangchong super-unites, where the first three super-unites couldbe incorporated in the Darongshan-Shiwandashan rockgroup. Eech super-uniteconsists of several unites. The ages for these unites have been systematicallydetermined by means of 40~Ar/39~Ar step-heating dating and K-Ar dating.Based on these data, a isotopic geological age table of the area...

According to concept of unite and super-unite, the Darongshan-Shiwanda-shan granitic batholith in Guangxi is divided into Shinan, Kuishan, Liuwan-shan and Wangchong super-unites, where the first three super-unites couldbe incorporated in the Darongshan-Shiwandashan rockgroup. Eech super-uniteconsists of several unites. The ages for these unites have been systematicallydetermined by means of 40~Ar/39~Ar step-heating dating and K-Ar dating.Based on these data, a isotopic geological age table of the area is establi-shed. The age table shows that emplacement age of the Darongshan-Shiwanda-shan rockgroup ranges from 258. Ma of upper Permian to 231 Ma of middleTrias and its duration is about 27 Ma. There is the feature of parallel evolu-tion between super-unites in the Darongshan-Shiwandashan rockgroup.Wangchong super-unite formed in 259 Ma of lower Permian.

对广西大容山一十万大山花岗岩岩基按单元和超单元的概念划分出石南、葵山、六万山和旺冲四个超单元,前三个超单元又可归并为大容山一十万大山岩群。主要采用~(40)Ar/~(39)Ar阶段升温法和K-Ar稀释法对单元和超单元进行系统的年代学研究,并编制出该区花岗岩同位素地质年代表。年代表说明,大容山一十万大山岩群侵位时间从晚二叠世258Ma,持续时间约27Ma;该岩群各超单元存在并列演化的特点。旺冲超单元形成于早二叠世259Ma.

 
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