摘要
为了掌握某区域地质的化学特征,分析了岩体的主要元素特征、微量元素特征和同位素特征。结果表明,岩体中蛇纹岩和辉石岩中Fe_(2)O_(3)含量约在8%,而正长岩和碳酸岩中Fe_(2)O_(3)含量较低;蛇纹岩、辉石岩、正长岩和碳酸岩中都含有较高含量的SiO_(2),正长岩中含有较高含量的Al_(2)O_(3)和Na_(2)O+K_(2)O,辉石岩中含有较高含量的CaO、MgO、Fe_(2)O_(3)和P_(2)O_(5)。碳酸岩、正长岩的碳13同位素相对于标准物质PDB的比例偏差和氧18同位素相对于标准物质PDB的比例偏差较为接近。岩体中辉石岩、正长岩和碳酸岩的^(87)Rb/^(86)Sr主要分布在0.0015~0.1577,^(87)Sr/^(86)Sr主要分布在0.7059~0.7070,^(147)Sm/^(144)Nd主要分布在0.0826~0.1300,^(143)Nd/^(144)Nd主要分布在0.5133~0.5135,岩体中辉石岩、正长岩和碳酸岩的正长岩的^(143)Nd/^(144)Nd较为接近。
In order to grasp the chemical characteristics of the geology of a certain region,the main elemental characteristics,trace element characteristics and isotopic characteristics of the rock mass were analyzed.The results showed that the Fe_(2)O_(3) content in serpentine and pyroxene rocks was about 8%,while the Fe_(2)O_(3) content in syenite and carbonate rocks was low.Serpentine,pyroxene,syenite and carbonate rocks all contained higher content of SiO_(2),syenite rock contained higher content of Al_(2)O_(3) and Na_(2)O+K_(2)O,and pyroxene rock contained higher content of CaO,MgO,Fe_(2)O_(3) and P_(2)O_(5).The ratio deviation of carbon 13 isotope to the reference material PDB and the proportion deviation of oxygen 18 isotope to the reference material PDB in carbonate rocks and syenite was similar.The ^(87)Rb/^(86)Sr of pyroxene,syenite and carbonate rocks in the rock mass were mainly distributed in 0.0015~0.1577,^(87)Sr/^(86)Sr was mainly distributed in 0.7059~0.7070,^(147)Sm/^(144)Nd was mainly distributed in 0.0826~0.1300,^(143)Nd/^(144)Nd was mainly distributed in 0.5133~0.5135,and the ^(143)Nd/^(144)Nd of syenite of pyroxene,syenite and carbonate rocks in the rock mass was relatively close.
作者
丁时晨
DING Shichen(The Fifth Geological Brigade of Jiangsu Provincial Bureau of Geology and Mineral Resources,Xuzhou 221000,Jiangsu China)
出处
《粘接》
2025年第2期117-120,共4页
Adhesion
关键词
岩体
化学特征
主要元素特征
微量元素特征
同位素特征
rock mass
chemical characteristics
main element characteristics
characteristics of trace elements
Isotope characteristics
作者简介
丁时晨(1975-),男,本科,高级工程师,研究方向:地质实验测试及化学分析,E-mail:dshicfppt8q@136.com。
