华北地质2025，Vol.48Issue(4)：32-42,11.DOI:10.19948/j.12-1471/P.2025.04.03
鄂尔多斯盆地塔然高勒铀矿床矿体产出特征及其对成矿作用的指示
Characteristics of reservoirs and ore bodies in the Tarangaole uranium deposit in the Ordos Basin and their relationship with mineralization
摘要
Abstract
[Objective]The northeastern margin of Ordos is an important sandstone-type uranium deposit area in China,and the Tarangaole deposit is a representative one.Analyzing the orebody morphology and formation mechanism of this deposit can further our understanding of the metallogenic regularity and mechanism of sandstone-type uranium deposits.[Methods]This paper uses sedimentology,petrology,mineralogy and other methods.Through the statistics of the thickness,burial depth,elevation and burial depth of the ore-bearing target layer and the ore-controlling factors of the Tarangaole deposit,various diagrams revealing the mor-phological characteristics of the orebody were drawn.[Results]The results show that the elevation of the reservoir in the Taran-gaole deposit is high in the northeast and low in the southwest.The thickest part of the orebody is generally located in the transition zone between the rapid and gentle parts of the reservoir elevation change.The orebody is tabular and occurs along the bedding in the contact zone between the carbonaceous and pyrite-rich gray sandstone and the gray-green sandstone.Vertically,the intensity of the gamma-ray logging anomaly gradually weakens from top to bottom.Horizontally,along the flow direction of the oxygen-rich and uranium-rich fluid,the thickness of the orebody first increases and then decreases,with a relatively obvious metallogenic center zone.[Conclusion]The position and morphology of the Tarangaole orebody are mainly constrained by the gray sandstone rich in re-ducing medium.The maximum thickness of the orebody in the metallogenic center zone is related not only to the continuous metal-logenic process in the later stage,but also to a certain extent to the change of the reservoir elevation.关键词
鄂尔多斯盆地/塔然高勒矿床/砂岩型铀矿/矿体特征/成矿作用Key words
Ordos Basin/Tarangaole deposit/sandstone-type uranium deposit/orebody characteristics/mineralization分类
天文与地球科学引用本文复制引用
文思博,朱强,程银行..鄂尔多斯盆地塔然高勒铀矿床矿体产出特征及其对成矿作用的指示[J].华北地质,2025,48(4):32-42,11.基金项目
中国地质调查项目"全国铀矿战略性矿产调查"(DD20240204701) Supported by the Geological Survey Project of China(DD20240204701) （DD20240204701）
