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Neo-Proterozoic MTS Carbonatite Deposition in the Lingbi Area, Anhui and the Implications
详细信息   
摘要


    

MTS carbonatite is a special kind of carbonatite that developed in Precambrian, especially in Proterozoic, for it is composed of uniform, coaxial and polygonal microsparry calcites of 5～15 μm in size and texturally apparently different from matrix. The MTS carbonatites in the Lingbi area, Anhui fall into two categories in origin: in-situ and alien.  The petrological features of MTS carbonatite indicate that it formed and developed in subtidal and circum-tide flat environment in stable craton, especially at the bottom of the medium-shallow gentle slope cycle that became shallow upward, reaching storm wave base at most. As a sedimentary type of global significance, MTS carbonatite that distributes in a specific timeframe can improve the precision in Precambrian stratigraphic correlation.
    

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