| 石油开发区块浅部地层放射性变化的监测 |
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| 引用本文： | 杨瑞瑛,贾秀琴,张海珠.石油开发区块浅部地层放射性变化的监测[J].同位素,2006,19(2):65-69. |
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| 作者姓名： | 杨瑞瑛 贾秀琴 张海珠 |
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| 作者单位： | 中国科学院,高能物理研究所,核分析技术重点实验室,北京,100049 |
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| 摘 要： | 尝试提出将自然伽马能谱测井仪用于油田勘探开发区环境的辐射监测。在黄河入海口附近进行了四口井的浅部地层自然伽马能谱测井，初步研究结果表明，老黄河口浅层的Th含量比其他几口井的含量高；海水中的U含量较陆上浅层含量高；老油区的放射性比新探区高，说明石油开发对当地的生态环境是有一定的影响
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| 关 键 词： | 自然伽马能谱测井 黄河三角洲 石油勘探开发 生态环境 |
| 文章编号： | 1000-7512（2006）02-0065-05 |
| 收稿时间： | 2005-08-12 |
| 修稿时间： | 2006-01-26 |
Geochemical Characteristics of Rocks From Qingshuigou of Middle Qilian Ophiolete by NAA |
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| YANG Rui-ying,JIA Xiu-qin,ZHANG Hai-zhu.Geochemical Characteristics of Rocks From Qingshuigou of Middle Qilian Ophiolete by NAA[J].Isotopes,2006,19(2):65-69. |
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| Authors: | YANG Rui-ying JIA Xiu-qin ZHANG Hai-zhu |
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| Affiliation: | Laboratory of Nuclear Analytical Technigues，Institute of High Energy Physics， ;the Chinese Academy of Sciences ; |
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| Abstract: | The contents of Rare-earth elements(REE) in harzburgite from Qingshuigou ophiolete are determined by preconcentration neutron activation analysis(NAA),and the contents of REE in basalts at the same time are also measured by instrument neutron activation analysis.The geochemical characteristics of REE indicats that harzburgite(Q_1,Q_(11),Q_(12)) is refractory residue left after partial melting of the upper mantle;tholeiite(Q_3,Q_6,Q_(10),Q_2,Q_4,Q_8) is derived from partial melting of a LILE-rich mantle wedge overlying the subduction zone.Therefore,the Qingshuigou ophiolites may be the product of island-arc volcanic activity,and probably generated in the fore or back-arc tectonic settings. |
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| Keywords: | neutron activation analysis REE harzburgite basa |
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