| 华北地台南缘寻找不整合面型铀矿可能性的探讨 |
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| 引用本文： | 夏异凡.华北地台南缘寻找不整合面型铀矿可能性的探讨[J].铀矿地质,1990,6(2):65-71. |
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| 作者姓名： | 夏异凡 |
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| 摘 要： | 华北地台南缘(河南省部分)的太华活动带亚区,较地台内部的登封克拉通亚区具有变质程度较高、晚期活动性强的特点,然而在该亚区出露的背孜-瓦屋穹窿和舞阳穹窿存在元古界不整合面铀矿化的局部地质环境、具体表现在具有混合岩化的晚太古代—早元古代结晶基底、早元古代石墨岩系、中元古代不整合面、稳定的中元古代红色沉积盖层、断裂构造、中基性岩脉,粘土化蚀变较发育等特点。本文描述了这些特点,对比澳、加不整合面铀矿成矿摸式,遴选出背孜-瓦屋穹窿的J地段和F地段,舞阳芎窿的T地段和C地段是值得探索和验证的远景区。
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| 关 键 词： | 华北地台 不整合面型铀矿床 |
DISCUSSION ON THE POSSIBILITY TO FIND UNCONFORMITY-RELATED U-DEPOSIT AT THE SOUTHERN MARGIN OF NORTH CHINA PLATFORM |
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| Xia Yifan.DISCUSSION ON THE POSSIBILITY TO FIND UNCONFORMITY-RELATED U-DEPOSIT AT THE SOUTHERN MARGIN OF NORTH CHINA PLATFORM[J].Uranium Geology,1990,6(2):65-71. |
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| Authors: | Xia Yifan |
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| Abstract: | The Taihua Mobile Belt Subarea at the southern margin of North China Platform (the part in Henan province) is characterized by higher metamorphism and stronger late activation as compared with the Dengfeng craton area within the platform. However, there exists local geologicai environment for Proterozoic unconformity-related U-deposit at the outcropped Beizi-Wawu Dome and Wuyan Dome in the subarea. The concrete indications of such. inference are its migmatized Late Archean-Early Proterozoic crystalline basement, the Early-Proterozoic graphite sequences, the Middle-Proterozoic unconformity, the undisturbed Middle-Proterozoic red sedimentary cover, the widespread fault structure, intermediate-basic dikes and argillization. Describing the above Charcteristies, comparing them with the genetic model of unconformity-related U-deposit in Australia and Canada, the author has selected the J portion and F portion at Beizi-Wawu Dome, and T portion and C portion at Wuyang Dome as the promising areas which are worth investigating and being proven. |
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| Keywords: | North China Platform Unconformity-related U-deposit |
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