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裂变
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  fission
    Study on Fission Track Method and the Thermochronology of the Yunkaidashan
    裂变径迹方法及云开大山热年代学研究
短句来源
    Determination of uranium distribution in Jilin meteorite using fission track method
    用裂变径迹法研究吉林陨石中的铀分布
短句来源
    TECHNIQUE OF FISSION TRACK DATING OF ZIRCON
    锆石的裂变径迹年龄测定技术
短句来源
    Fission track dating of zircon and thermal history of the Fangshan granodiorite in Beijing
    北京房山花岗闪长岩中锆石的裂变径迹年龄测定和热历史的研究
短句来源
    THE PRIMARY APPLICATION OF APATITE FISSION TRACK ANALYSIS IN OIL EXPLORATION
    磷灰石裂变径迹的分析在石油勘探中的初步应用
短句来源
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  apatite fission
    THE PRIMARY APPLICATION OF APATITE FISSION TRACK ANALYSIS IN OIL EXPLORATION
    磷灰石裂变径迹的分析在石油勘探中的初步应用
短句来源
    APPLICATION OF APATITE FISSION TRACK TO STUDY THE THERMAL HISTORY OF SEDIMENTARY BASIN
    应用磷灰石裂变径迹研究沉积盆地的热史
短句来源
    THE APPLICATION OF APATITE FISSION TRACK ANALYSIS TO THE RECONSTRUCTION OF THE SUBSIDENCE AND UPLIFT HISTORY OF SEDIMENTARY BASINS:A CASE STUDY FROM THE ORDOS BASIN
    磷灰石裂变径迹分析在恢复盆地沉降抬升史中的应用──以鄂尔多斯盆地为例
短句来源
    This study has achieved 6 zircon and 17 apatite fission track analysis results. The zircon fission track ages range from 134 Ma to 312 Ma and are divided into three groups of 312 Ma,247 Ma and 158-134 Ma. We consider that the three age groups reflect three metallogenic epochs.
    本文获得不同矿区6个锆石和17个磷灰石裂变径迹分析结果,其中锆石年龄为134 Ma~312 Ma,分属312 Ma,247Ma和158~134 Ma三个年龄组,是3个成矿期的体现;
短句来源
    Ar/Ar analyses of biotites and muscovites in gneiss collected along the Sanzhu river on the hangwall of Kezieryieer fault yield total gas ages of 370 to 350Ma, Apatite fission track central ages for these gneisses range from 22. 1 + 104 to 13. 7 + 1. 5Ma.
    据Ar/Ar热年代学测试分析结果,断层上盘片麻岩中的黑云母、绢云母的总气体年龄为370~350Ma,钾长石样品的冷却年龄为晚中生代—早新生代,片麻岩中磷灰石的裂变径迹年龄为22.1±1.4~13.7±1.5Ma.
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  “裂变”译为未确定词的双语例句
    FISSION-TRACK DATING OF FLUORITE DEPOSITS IN ZHEJIANG PROVINCE AND SOME RELATED PROBLEMS
    浙江萤石矿床的裂变径迹年龄测定及有关问题讨论
短句来源
    ADVANCE OF FISSION-TRACK ANALYSIS METHOD AND ITS APPLICATION
    裂变径迹定年方法的进展及应用
短句来源
    Two apatite fission-track ages was got,i. e. : the age of(4.2±0.8 Ma) in the front zone of the Middle Kunlun Mountains and the age of(3.9±0.6 Ma) in the rear zone of the Middle Kunlun Mountains.
    在中昆仑山前山和后山分别获得(4.2±0.8)Ma和(3.9±0.6)Ma的磷灰石裂变径迹年龄。
短句来源
    e. ,155~189 Ma and 189~243 Ma,which are consistent with two tectonic episodes from apatite fissiontrack ages(62~100 Ma and 100~160 Ma).
    这与磷灰石裂变径迹年龄反映的62~100Ma 和100~160Ma 两个构造期完全一致。
    This paper describes in brief the implication,application and progress of thermochronology,with emphasis placed on fissiontrack and ~(40)Ar/~(39)Ar thermochronology.
    本文简单介绍地质热年代学的含义、应用和进展,并重点介绍了裂变径迹与~(40)Ar/~(39)Ar 热年代学。
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  fission
Cenozoic uplift of West Qinling, northeast margin of Tibetan plateau-a detrital apatite fission track record from the Tianshui b
      
An epithermal neutron zone between the fast neutron zone and the thermal neutron zone can be established for the transmutation of longlived fission products (LLFP).
      
Fusion, Fragmentation, and Fission of Mitochondria
      
Mitochondrial shapes are also described which are interpreted as intermediates of their "equational" division, or fission.
      
This review considers molecular components and possible mechanisms of fusion, fragmentation, and fission of mitochondria, and the biological significance of these processes is discussed.
      
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  apatite fission
Cenozoic uplift of West Qinling, northeast margin of Tibetan plateau-a detrital apatite fission track record from the Tianshui b
      
The Early Paleocene age of the ilmenite gabbro-dolerites and biotite granites was confirmed by zircon and apatite fission-track dating.
      
According to the determination of apatite fission track ages and length, the annealing characteristics of apatite fission track, geothermal evolution and prediction of petroleum source in studied area are discussed.
      
Two events of Tibet uplifting are revealed by detrital apatite fission track (AFT) age data from Linxia Basin.
      
Late stage thermal history of the Songliao Basin and its tectonic implications: Evidence from apatite fission track (AFT) analys
      
更多          


Field and laboratory evidence has proved that the Wushan copper deposit isone of the Upper Paleozoic Polymetallic massive sulfide deposits formed in post-Caledonian depression troughs in South China. The dacitic lava layer found withinthe stratabound sulfide ores has an fission-track age of 345±37 m.y. Based on thenature of the crust on which they were formed, massive sulfide deposits canbe devided into three types: the Cyprus type formed on oceanic crust, the Kutrokotype formed on transitional crust, and the...

Field and laboratory evidence has proved that the Wushan copper deposit isone of the Upper Paleozoic Polymetallic massive sulfide deposits formed in post-Caledonian depression troughs in South China. The dacitic lava layer found withinthe stratabound sulfide ores has an fission-track age of 345±37 m.y. Based on thenature of the crust on which they were formed, massive sulfide deposits canbe devided into three types: the Cyprus type formed on oceanic crust, the Kutrokotype formed on transitional crust, and the South China type formed on continentalcrust.A comparison is made on the geologic features of these three types.

野外和室内研究表明,武山铜矿床为大陆地壳断裂拗陷带中形成的块状硫化物矿床。其成因与中石炭世海相火山作用有关。与主矿层伴生的武山英安质晶屑熔岩的裂变径迹年龄为345±37m.y.。块状硫化物矿床按成矿地壳背景可分成三种类型:大洋地壳上形成的塞浦路斯型;过渡性地壳上形成的黑矿型和大陆地壳上形成的华南型。华南型与塞浦路斯型和黑矿型在地质特征上有着显著的差别。

In this paber fission track is used to determine the ultimate rock-for-ming epoch of Mahanshan metamorphic rock group with quartz and hor-nblende,according to the dated data.it is 366 to 356 million years-old andit conforms approximately to the data dated by K-Ar(378 million yearsold),The forimng epoch of xiaoshima granite rock body is dated 341 to330 million years old.It can be diagnosed accordingly that it formed fromcondensing remeting magma in the later rstage of migmatization.

本文用裂变径迹法,借助石英、角闪石测定了马啣山群变质岩最终形成时代为3.66×10~8年~3.56×10~8年,与钾—氩法测定的3.78×10~8年在实验误差范围内相符.测定小石马花岗岩体的形成时间为3.41×10~8~3.30×10~8年前.推断其成因为在混合岩化晚期由重熔岩浆冷却而成.

44 drill core samples of the Jilin meteorite have been studied by fission-track techniques to reveal their uranium microdistribution.Due to its extremely low uranium content,ultrapune quartz glass wais lused as an external tra.ck detecitor instead of mus-covite mica.It is obvious from the determined track densities that pyroxene generally contains higher uranium than olivine.Analysis of several hundred monomiuenal grains gave an average uranium content of 2-8 ppb for pyroxene and 0.15±0.08 ppb for olivine.The...

44 drill core samples of the Jilin meteorite have been studied by fission-track techniques to reveal their uranium microdistribution.Due to its extremely low uranium content,ultrapune quartz glass wais lused as an external tra.ck detecitor instead of mus-covite mica.It is obvious from the determined track densities that pyroxene generally contains higher uranium than olivine.Analysis of several hundred monomiuenal grains gave an average uranium content of 2-8 ppb for pyroxene and 0.15±0.08 ppb for olivine.The highest uranium concentrations are observed in some phosphates (e.g.-whitlo-ckite),ranging from 110 to 250 ppb,whereas the lowest uranium values (0.5-1 ppb) are expected in the opaque matrix.This suggests a non-homogeneous distribution of uranium in the meteorite.

用44块吉林陨石的钻孔样品进行古径迹研究。U-显微分布用裂变径迹技术来测定。使用铀含量非常低的超纯石英玻璃(≤0.1ppb)来代替白云母作为外探测器。通常辉石的铀含量大于橄榄石的铀含量。几百个单矿物颗粒的平均铀含量辉石为2—8ppb,橄榄石为0.15±0.08ppb。观测的高铀在某些磷酸盐相(白磷钙矿等)为110—250ppb。特别低的铀是不透明基质区域为0.5—1ppb。可以看出陨石中的铀是不均匀的。

 
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