40Ar-39Ar dating of the Inner Carpathians Variscan basement and Alpine mylonitic overprinting

摘要: Abstract The 40Ar-39Ar dating method has been applied to mylonitic rocks from the Carpathian mountains. These are Variscan metamorphic and magmatic that were overprinted during Alpine orogeny. Inner Western Carpathians conventionally described as a nappe pile formed by northward movement then subjected intense strike-slip normal faulting, resulting in formation of rocks. Precise stratigraphie ages provide clear constraints for geodynamic interpretation related succession events, such pre-Gosauian phase, Turonian (90 Ma). allows define age ancient basement overprinting. In High Low Tatras, mineral around 340–350 Ma yielded gneisses, micaschists amphibolites, providing younger limit metamorphism. emplacement/cooling granites is defined between 305 335 Ma. several tectonothermal events. major events dated at 65 86–88 which mylonites generated. An older event, 140 earlier, Rb-Sr method, now confirmed method. Dating phengites extracted high-pressure Triassic Kosice area yields new data this 155