Minerals separated from diaphtoritic rocks of the Selec block of the Pova?sky Inovec crystalline complex were dated by 40Ar/39Ar method (coarse-grained muscovites), and accessory apatites, coarse-grained muscovites and whole rocks were analyzed by Rb-Sr method. Obtained 40Ar/39Ar muscovite plateau ages and calculated Rb-Sr ages for two point accessory apatite – coarse-grained muscovite pairs are identical (307–310?Ma) and are considered as age of diaphtoresis in the Pova?sky Inovec Mts. crystalline complex. Both isotopic systems in minerals registered no metamorphic Alpine overprint. But in whole rocks, increasing of Rb/Sr ratio is documented that can be explained by loss of ordinary strontium from acid plagioclases during low temperature alteration under significant Alpine tectonics influence.
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