Further data concerning the pressure character of the Hercynian metamorphism in the West Carpathians (Czechoslovakia).

New data on the pressure character of the Hercynian metamorphism in the Czechoslovak West Carpadlians arc presented and discussed. Geobarometric estimations arc based on the bo values of muscovites from phyllites. Three sample populations are considered, corresponding to a total of 172 new ho values. One sample population (phyllites from the Brusnik Anticline) gives a mean b0 value of 8.994 A (s = 0.005; n = 60). The other two sample populations (Stos Formation from the Gemericum; Predna Hola Complex from the Veporicum) supply significantly lower b0 values, due to the high Al-content of the rocks, shown by the systematic occurrence of paragonite. These new analytical data confirm that, in the West Carpathians as wdl as in the central part of the Alpine-Mediterranean Belt, the Hercynian metamorphism recorded in the phyllites, is of low-pressure (metamorphic thermal gradient about 40°C/km), with only one exception (Poiana Rusca, South Carpathians, Romania).