Conclusions
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1.
Crystalline rock masses are not only permeable, but hydraulically continuous and geochemically active. The mass and energy exchange with host rocks in the migration process of fissure waters alter the physical properties and chemical and isotopic compositions of both fissure waters and their host rocks. It is for this reason that the geochemical peculiarities of both fissure waters and their media contain abundant information about their hydrodynamic environment. The acquisition and interpretation of hydrochemical and isotopic data proved to be an effective way to verify the hydraulic continuity of fissured media.
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2.
The movement of fissure water is variable both in time and in space. The distribution of sinters and the change of their compositions record the evolution of fissure water flow. The variability of fissure water flow in space, on the other hand, often causes remarkable difference in the chemical and isotopic compositions of fissure waters from the same area. On the premise of the verification of hydraulic continuity, system analysis and numerical modelling of fissure waters can be made on different scales.
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Wang, Y., Khaustov, A.P. Geochemical and isotopic imprints of hydrodynamic environments of fissure waters in crystalline rocks. Chin.Sci.Bull. 42, 756–761 (1997). https://doi.org/10.1007/BF03186971
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DOI: https://doi.org/10.1007/BF03186971