煤田地质与勘探
煤田地質與勘探
매전지질여감탐
COAL GEOLOGY & EXPLORATION
2001年
2期
4-7
,共4页
I/S间层粘土岩%REE%地球化学特征
I/S間層粘土巖%REE%地毬化學特徵
I/S간층점토암%REE%지구화학특정
通过ICP和INAA方法对华北几个晚古生代煤田(煤矿区)的I/S间层粘土岩样品进行了稀土元素(REE)地球化学特征研究。结果表明，无序间层粘土岩REE含量较低，并具中-弱Eu正异常为特征；IS有序间层粘土岩以REE含量高，中-强Eu亏损为特征。两种I/S间层粘土岩的REE含量及特征均与NASC有所不同。物源分析表明，无序间层粘土岩主要由中性火山碎屑(岩)在原地蚀变、转化而成，而有序间层粘土岩则是由酸性岩蚀变而成。
通過ICP和INAA方法對華北幾箇晚古生代煤田(煤礦區)的I/S間層粘土巖樣品進行瞭稀土元素(REE)地毬化學特徵研究。結果錶明，無序間層粘土巖REE含量較低，併具中-弱Eu正異常為特徵；IS有序間層粘土巖以REE含量高，中-彊Eu虧損為特徵。兩種I/S間層粘土巖的REE含量及特徵均與NASC有所不同。物源分析錶明，無序間層粘土巖主要由中性火山碎屑(巖)在原地蝕變、轉化而成，而有序間層粘土巖則是由痠性巖蝕變而成。
통과ICP화INAA방법대화북궤개만고생대매전(매광구)적I/S간층점토암양품진행료희토원소(REE)지구화학특정연구。결과표명，무서간층점토암REE함량교저，병구중-약Eu정이상위특정；IS유서간층점토암이REE함량고，중-강Eu우손위특정。량충I/S간층점토암적REE함량급특정균여NASC유소불동。물원분석표명，무서간층점토암주요유중성화산쇄설(암)재원지식변、전화이성，이유서간층점토암칙시유산성암식변이성。
The clay rock samples from the Late-Paleozoic coalfields of Northern China are studied with ICP and INAA methods.The disordered I/S clay rock is characterized by lower REE contents and the middle to weak positive anomaly of Eu,but the ordered one is of higher REE contents and the strong to middle negative anomaly of Eu. The clay rocks differ form NASC in the REE contents and characteristics. The results show that the disordered and ordered clay rocks are respectively formed by intermediate and acidic pyroclasts in the sedimentary basins.
