The main purpose of this paper is to present a fundamental concept of U-Pb isotopic spectrum-system and to apply this idea to the interpretation of the mechanism of uranium ore formation. It is evident from a number o...The main purpose of this paper is to present a fundamental concept of U-Pb isotopic spectrum-system and to apply this idea to the interpretation of the mechanism of uranium ore formation. It is evident from a number of examples of uranium deposits that the uranium deposits formed in various processes are characterized by different types of U-Pb isotopic spectrum-system.展开更多
Based on the evolutionary theory of U-Pb isotopic system, we have studied the genetic model for a uranium deposit occurring in the carbonate-silicolite-pelite. The data show that the U-deposit is characterized by a mu...Based on the evolutionary theory of U-Pb isotopic system, we have studied the genetic model for a uranium deposit occurring in the carbonate-silicolite-pelite. The data show that the U-deposit is characterized by a multi.stage evolution with respect to its U-Pb isotopic system, and the mechanism of its genesis can be expained by later repeated superimposition of mineralization which took place at about 200±10 m.y.; 100±10 m.y., 60 ± 10 m.y.and 11 ± 1 m.y. ago. These mineralization stages are closely related to the regional geological tectonic activity.展开更多
文摘The main purpose of this paper is to present a fundamental concept of U-Pb isotopic spectrum-system and to apply this idea to the interpretation of the mechanism of uranium ore formation. It is evident from a number of examples of uranium deposits that the uranium deposits formed in various processes are characterized by different types of U-Pb isotopic spectrum-system.
文摘Based on the evolutionary theory of U-Pb isotopic system, we have studied the genetic model for a uranium deposit occurring in the carbonate-silicolite-pelite. The data show that the U-deposit is characterized by a multi.stage evolution with respect to its U-Pb isotopic system, and the mechanism of its genesis can be expained by later repeated superimposition of mineralization which took place at about 200±10 m.y.; 100±10 m.y., 60 ± 10 m.y.and 11 ± 1 m.y. ago. These mineralization stages are closely related to the regional geological tectonic activity.
