Oxidation Zone Zoning Geological Characteristics and Geochemical Characteristics of Elements in the Middle East Wulanchabu Depression of the Erlian Basin
彭瑞强, 康世虎, 洪斌跃. Oxidation Zone Zoning Geological Characteristics and Geochemical Characteristics of Elements in the Middle East Wulanchabu Depression of the Erlian Basin[J]. 2018, (2): 58-62.
彭瑞强, 康世虎, 洪斌跃. Oxidation Zone Zoning Geological Characteristics and Geochemical Characteristics of Elements in the Middle East Wulanchabu Depression of the Erlian Basin[J]. 2018, (2): 58-62. DOI: 10.16056/j.1005-7676.2018.02.016.
二连盆地乌兰察布坳陷中东部地区氧化带分带地质特征及其元素地球化学特征
摘要
二连盆地赋存大量油气及煤资源
也是砂岩型铀矿富集成矿区。研究区位于乌兰察布坳陷的中东部
氧化带分带明显
具有极好的古河道型铀矿成矿条件。铀矿化位于过渡带的灰色砂岩中
氧化带与还原带内均未发现矿化现象。过渡带中微量元素Co、Ni、Zn、Mo、Pb、U等含量较高
Rb、Cs、Ba、Bi、Th、Nb、Ta、Hf等含量较低
δEu呈负异常。与铀富集呈正相关的元素有Co、Ni、Zn、Mo、Pb、La、Ce、Nd等。
Abstract
The Erlian Basin has a large amount of oil and gas and coal resources
and it is also a rich integrated mining area for sandstone type uranium deposits. The study area is located in the Middle East of the Wulanchabu depression. The oxidation zone zoning is obvious
It has excellent uranium metallogenic condition of the ancient river channel type. Uranium mineralization is located in the gray sandstone of the transition zone
no mineralization was found in the oxidation zone and the reduction zone. The content of trace elements Co
Ni
Zn
Mo
Pb and U in the transition zone is higher. And the content of Rb
Cs
Ba
Bi
Th
Nb
Ta
Hf is low
the δEuis negative anomaly. The elements that are positively related to uranium enrichment are Co