Abstract

The distribution of Sr in Mesozoic carbonate rocks of the Central Western Carpathians is facially controlled. This facies control is demonstrated on 75 facies types and more than 1,200 single analyses. The distribution of Sr in limestones is bimodal, with high Sr concentrations in hypersaline, dark coloured and deep sea rock types and low Sr concentrations in littoral, neritic and shallow bathyal limestones of organogenic and organodetrital types. The data, although not quite conclusive, indicate that this bimodality is inherited from original sediments. The early diagenetic dolomites contain higher Sr concentrations than the late diagenetic ones. This might be related to a partition of Sr between aragonite vs. dolomite and calcite vs. dolomite for the two dolomitic facies types.

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