铀系
- 网络uranium series;u-series;U-Th-Pa;u-s
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洞穴石笋高精度ICP-MS铀系年代学与西南岩溶地区古气候变化研究
Research on the High Precision ICP-MS Uranium Series Chronology of Cave Stalagmites and the Paleo-climatic Changes in the South-Western Karst Region , P.R. China
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介绍用热电离质谱(thermalionizationmassspectrometry,TIMS)铀系法对海洋珊瑚定年的测定及古环境研究的一些成果。
Experimental results of coral dating and paleoenvironment studies by using the thermal ionization spectrometry ( TIMS ) uranium series method were introduced .
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泥河湾叠层石样品的ESR与铀系法测年对比
ESR and U-series dating of stromatolite samples from Nihewan basin
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本文叙述了用厚源α计数技术测定TL和ESR年代中钍系和铀系年剂量的原理和方法。
The thick source alpha counting in TL and ESR dating is described .
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Barbados岛珊瑚礁高精度铀系年龄及讨论
The conventional island high precision dating and discussion of coral reefs from Barbados with U series method
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ESR测年法近年来迅速发展,填补了铀系不平衡法及14C法所遗留下来的一些空白。
Recently ESR Dating Method develops quickly , supplying a gap of Unbalanced U System Dating Method and ~ ( 14 ) C Dating Method .
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采用MCNP模拟软件和水分对天然伽玛射线的影响实验,对不同水分土壤中铀系和钍系天然伽玛的原始谱进行了模拟运算。
The original spectrum from the soil is simulated by MCNP and the experiment of influence to natural gamma-ray is done .
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岩溶石笋、海洋珊瑚、湖泊沉积物等信息载体可以用热电离质谱(TIMS)铀系技术定年。数据表明,1&3层的年代比目前的有些提法要早一些。
Cave stalagmites , corals , lake sediments are suitable for dating using the thermal ionization mass spectrometry ( TIMS ) uranium series method . 1 were dated with uranium series dating .
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用NaI(Tl)γ谱仪测定地层铀系、钍系和钾&40γ照射量率的逆矩阵法
A inverse matrix method for measuring individual exposure rate from ~ ( 238 ) u series , ~ ( 232 ) th series and ~ ( 40 ) k of environmental gamma radiation by a (?) 100 × 100 nai ( tl )γ spectrometer
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用高精度热电离质谱(TIMS)铀系法测定碳酸盐标样的年龄,测定结果与α谱仪铀系法进行比较,铀含量和年龄值均吻合。
The age of stalagmite was determined by high precise thermal ionization mass spectrometry ( TIMS ) with uranium series age method . Uranium content and age of the standard carbonate were in agreement with standard values .
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华南若干旧石器时代地点的铀系年代
Uranium series chronological sequence of some Palaeolithic sites in South China
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南极普里兹湾海域铀系同位素的分布
Distribution of uranium-series isotopes in the Prydz bay , Antarctica
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铀系等时线法测定腾冲地区火山岩的年龄
Uranium-series dating of young volcanic rocks from Tengchong region , southwestern China
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铀系不平衡定年技术是第四纪年轻年代学的重要定年手段。
Uranium series dating technique is the important means of Quaternary chronology .
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水-岩反应的铀系不平衡判别
Judgement on water_rock interaction in crystalline rocks using uranium_series disequilibrium
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铀系组分法测定年青火山岩年龄的研究
Studies on the uranium series component dating method for young volcanic rocks
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浙江桐庐人类头骨的铀系年代
U-series dating of the hominid skull from tonglu , zhejiang
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热电离质谱铀系法测定珊瑚及对古环境研究
TIMS uranium series method for coral dating and paleoenvironment research
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江苏镇江莲花洞动物化石铀系年代
U-series dating of fossil teeth from Lianhua cave in zhenjiang , jiangsu Province
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云南西畴仙人洞动物化石铀系年代
U-series dating on fossil teeth from Xianren cave in xichou , Yunnan Province
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南海珊瑚礁铀系年龄及其地质意义
Uranium-series dating of coral reefs from South China Sea and its geological significance
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铀系定年及其在南海沉积物研究中的应用
Uranium series dating and its application in sedimentological studies of South China Sea
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冲绳海槽火山岩同位素特征及铀系组分法测年
Isotopic feature and Uranium-series component dating of the volcanic rocks in Okinawa Trough
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中国东都喀斯特洞穴沉积物铀系年代
The U-series ages of speleothem of karst caves in the east of China
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铀系不平衡样品年剂量的确定
Determination of annual dose for unbalanced U series samples
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周口店遗址骨化石的铀系年代研究
Study on uranium series dating of fossil bones and teeth from Zhoukoudian site
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高精度热电离质谱铀系法测定北京猿人遗址年代初步结果
Preliminary results on U-series dating of Peking Man Site with high precision tims
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土壤中水分含量对铀系、钍系天然γ能谱影响的分析
Effect of moisture in soils on natural gamma spectrum of uranium-series and thorium-series
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热电离质谱铀系法测定碳酸盐标样
Determination of Age for Standard Carbonate Samples by TIMS with Uranium series Age Method
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桐梓人遗址岩灰洞的铀系年龄
U-series age of Yanhui cave , the site of Tongzi man grey quadratic form