Under the tectonodynamic process, crustal materials tend to experience two modes of adjustment: (1) structural (physical) adjustment, manifested by folding, faulting, uplifting, downwarping, etc.: (2) compositional ad...Under the tectonodynamic process, crustal materials tend to experience two modes of adjustment: (1) structural (physical) adjustment, manifested by folding, faulting, uplifting, downwarping, etc.: (2) compositional adjustment, represented by element migration, concentration and dispersion, crystalline and dynamic differentiation of crystals, metamorphism, etc. (Yang Kaiqing. 1986; Yang Kaiqing et al., 1986). The dynamic adjustment of crustal materials in the middle-lower reaches of the Yangtze mainly occurred in the Mesozoic under the conditions of intense collision between the North China (Dabie) massif and the Yangtze massif. The structural adjustment refers to various types of deformation within the two massifs and the intensive shortening of the stratigraphic coyer of the Yangtze massif, whereas the compositional adjustment implies the structural remelting of the basement and the ore. and rock- forming processes in the two massifs.展开更多
A preliminary study on macroscopic geological structure, microscopic structure of brittle-duc-tile de formation, tectonogeochemistry and zoning regularity of uranium deposits under high shear-ing stress is made in man...A preliminary study on macroscopic geological structure, microscopic structure of brittle-duc-tile de formation, tectonogeochemistry and zoning regularity of uranium deposits under high shear-ing stress is made in many uranium deposits. Tectonodynamic metallogeny of uranium by strongshear stress is also discussed. It points out that characteristics of uranium deposits should be paidgreat attention in expIoration and prospecting.展开更多
文摘Under the tectonodynamic process, crustal materials tend to experience two modes of adjustment: (1) structural (physical) adjustment, manifested by folding, faulting, uplifting, downwarping, etc.: (2) compositional adjustment, represented by element migration, concentration and dispersion, crystalline and dynamic differentiation of crystals, metamorphism, etc. (Yang Kaiqing. 1986; Yang Kaiqing et al., 1986). The dynamic adjustment of crustal materials in the middle-lower reaches of the Yangtze mainly occurred in the Mesozoic under the conditions of intense collision between the North China (Dabie) massif and the Yangtze massif. The structural adjustment refers to various types of deformation within the two massifs and the intensive shortening of the stratigraphic coyer of the Yangtze massif, whereas the compositional adjustment implies the structural remelting of the basement and the ore. and rock- forming processes in the two massifs.
文摘A preliminary study on macroscopic geological structure, microscopic structure of brittle-duc-tile de formation, tectonogeochemistry and zoning regularity of uranium deposits under high shear-ing stress is made in many uranium deposits. Tectonodynamic metallogeny of uranium by strongshear stress is also discussed. It points out that characteristics of uranium deposits should be paidgreat attention in expIoration and prospecting.
