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   isotopic age determination 的翻译结果: 查询用时:0.008秒
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isotopic age determination     
相关语句
  同位素年龄测定
     The basic dike swarms around Shanxi—Hebei—Inner Mogolia borders in the north peripheral area of North China Craton can be divided into five age-groups according to isotopic age determination: 1800~1700 Ma, 800~700 Ma, 230 Ma, 140~120 Ma, and 50~40 Ma.
     根据同位素年龄测定 ,华北克拉通北缘晋冀蒙交界地区基性岩墙群可分为 :180 0~ 170 0 Ma,80 0~ 70 0 Ma,2 30 Ma,14 0~ 12 0 Ma,5 0~ 4 0 Ma五个年龄组。
短句来源
  同位素年龄测定
     The basic dike swarms around Shanxi—Hebei—Inner Mogolia borders in the north peripheral area of North China Craton can be divided into five age-groups according to isotopic age determination: 1800~1700 Ma, 800~700 Ma, 230 Ma, 140~120 Ma, and 50~40 Ma.
     根据同位素年龄测定 ,华北克拉通北缘晋冀蒙交界地区基性岩墙群可分为 :180 0~ 170 0 Ma,80 0~ 70 0 Ma,2 30 Ma,14 0~ 12 0 Ma,5 0~ 4 0 Ma五个年龄组。
短句来源
  同位素年龄
     Besides,the discovery of auhigenic monazite shows the possibility of isotopic age determination by U,Th= Pb method for the non-fossil Precambrian strata.
     自生独居石的发现为利用U,Th-Pb法测定无化石的前寒武纪地层同位素年龄显示了可能性。
短句来源
     Through comprehensively analysing the information of sedimentation, paleontology, key beds and isotopic age determination, this paper thinks that the sediments of the early to late Pliocene were developed in each large-scale basin of this region, whereas the middle to late Pliocene Series were deposited in small basins which subsided later.
     本文从沉积学、古生物、标志层和同位素年龄等方面综合分析,认为区内各大型盆地发育了上新世早期至晚期的沉积,而小盆地沉降较晚,发育上新世中期至晚期的沉积。
短句来源
     The main purpose of this paper is to determine the geological time according to the results of basalt isotopic age determination.
     本文的主要目的是依靠玄武岩同位素年龄确定地层时代。
短句来源
     The Wangjiawan Riverside section in particular possesses amenability to isotopic age determination.
     王家湾小河边剖面尤其适合进行化学地层学研究和同位素年龄的测定。
短句来源
     Based on the study of the petrology and comparing analysis of heavy minerals,granulometric analysis and percentage statistics of different composition gravels, K Ar isotopic age determination ,the comparison of REE distribution,it is probed that the main pebbles of conglomerates formed in the earlier period of Upper Carboniferous and Lower Permian are the quartzose sandstone gravels,coming from Ordovician period quartzose sandstone.
     通过岩矿鉴定、重矿物对比分析、砾度测量及不同成分砾石含量统计、K- Ar同位素年龄分析及 REE配分模式对比研究。 证明晚石炭世早期及早二叠世早期砾岩主要砾石成分是石英砂岩 ,物源为下伏奥陶系石英砂岩 ;
短句来源
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  同位素测年
     The age of emplacement is at Upper Paleozoic Era from the result of isotopic age determination.
     依据同位素测年结果,确定其侵位时代为晚古生代晚期。
短句来源
     The recent progress, new discoveries, new data of the regional geological survey during the 8th 5-year plan in Shaanxi, are disscussed in this paper, which include the classification of precambrian metamorphism rocks and rock group, stratigraphic establishment of Phanero zoic eon, paleontology and new data of isotopic age determination, intrusive rock lineage unit establishment, metamorphic plutonic mass and tectonic of orgenic belt, new methods of regional survey and inforrnation application.
     本文重点论述了陕西省“八五”期间区域地质调查方面的新进展、新成果、新发现、新资料、主要包括:前寒武纪变质杂者及岩群解体划分、显生苗地层厘定、古生物和同位素测年新资料、侵入岩谱系单位建立、变质深成岩体和造山带构造研究、填图方法新的探索与区调信息化等方面。
短句来源
     The comprehensive study of distribution of placer gold, intersection of one rock/ore vein system with another, and isotopic age determination for ores, reveals that the main metallogenic ageof Au, Ag deposits in the area is the late Yanshanian period.
     本文通过对砂金分布、岩矿脉体穿插关系以及矿石同位素测年结果等实际资料的综合研究分析,证明本区金银矿床的主成矿期应为燕山晚期;
短句来源
     According to data with fossils and sporopollens in underlying sediment stratigraphic and volcanic isotopic age determination,the volcanic is a lower Cretaceous equivalent of upper of Gouyang formation of Early Cretaceous.
     根据其下伏沉积地层中化石和孢粉资料及火山岩同位素测年资料,白女羊盘组火山岩的时代为早白垩世,其层位相当于下白垩统固阳组的上部层位。
短句来源
     Refferring to the isotopic age determination, the time of Gaolan litho-cluster may be included into Changcheng Period-Jixian Period of Mid-Proterozoic Era.
     参照同位素测年数据,可将皋兰岩群的时代厘定为中元古代长城纪—蓟县纪。
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  isotopic age determination
Sm/Nd isotopic age determination showed that Xiongshan dike swarm was at 585.7 Ma ± 30 Ma.
      


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