鄂尔多斯盆地环弧构造的多源信息特征识别

The multi-information signature recognition of annular structure in Ordos Basin

目的为多种能源矿藏(床)的富集定位研究以及协同勘探提供参考。方法由鄂尔多斯盆地及邻区重、磁异常场、遥感影像特征识别出该盆地内、中、外3个环弧构造(体),从盆地构造演化和后期改造角度分析3个环弧构造(体)的构造样式,研究油气、煤、铀矿等多种能源矿藏(床)同盆共存与环弧构造(体)的空间关系。结果内环体是南油北气、煤集中分布区和有利勘探区,内环体边缘是砂岩型铀矿分布区和有利勘探区,中环弧带是含煤地层和砂岩型铀成矿层出露区和勘探区。结论多种能源矿藏(床)产出在环弧构造(体)的不同部位,在空间分布上具有一定的规律。

Aim To provide the information for the rich location of multi-energy source mineral deposits and co-exploration in Ordos Basin. Methods By recognizing the signature of Bouguer gravity anomaly, aeromagnetic survey anomaly and remote sensing image, the Ordos Basin is divided into inner, middle, outer annular structure （body）. Results The inner annular structure （body） is for exploration of oil,gas and coal; the border of inner annular structure （body） for exploration of uranium; middle annular structure （body） for exploration of coal and uranium because coal-bearing formation and uranium-riching formation outcrop in this area. Conclusion Through analyzing relationship between tectonic evolution and late-reformation, the spatial distribution for the coexistence of multipleenergy source mineral deposits（ oil/gas pool, coal bed, uranium deposits, etc） in Ordos Basin is researched.