Ca Isotope Geochemistry and Its Geological Applications
As the main rock-forming element,Ca can show different degrees of fractionation in vari-ous geological processes,making it a potential geochemical index and tracer for studying diverse ge-ological processes.With the development of analytical techniques,Ca isotope can be more precisely determined and has been more and more applied to different fields of geology.During the past dec-ade,lots of research results had been accumulated.Based on the brief introduction of Ca isotope ref-erence materials and analytical methods,this study elaborates the application of Ca isotope in three fields of geology,including:1)the application of Ca isotope in planetary geology,which aims to ex-plore the causes and evolution processes of the meteorites,moon and other celestial bodies,as well as the characteristics of the early Earth.2)the application of Ca isotope in tracing deep geological processes;these processes include mantle metasomatism,continental subduction and deep carbon cycle.3)the application of Ca isotope in low-temperature processes;these include reconstruction of seawater evolution and river,groundwater and cold spring systems.Through reviewing recent ad-vances in the above important geological processes,we tend to deepen the understanding of the Ca i-sotope system.In the end,the emerging application of Mg-K-Ca multi-isotope combined tracing is also prospected.
Ca isotopeplanetary geologydeep geological processlow-temperature processcom-bined application of multi-isotope
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维普
