Vörös A. szerk.: Fragmenta Mineralogica Et Palaentologica 13. 1987. (Budapest, 1987)

cambrian (Early Baikalian = 650- 1 200 Ma) metasedimentary (detrital, psammitic- silty) polymetamorphic sequences recrystallized mainly in low pressure epidote-amphibolite and garnet-amphibolite facies. Hercynian prograde, and locally, Alpine retrograde events were proved by whole-rock, biotite and muscovite Rb-Sr isotopic data only (KOVÁCH in SZÁDECZKY-KARDOSS et al. 1969), but an uncertain (Precambrian ?) amphibolite facies metamorphism could not be excluded either. Fig. 1 Metamorphic map of Hungary with the location of the investigated area (constructed after SZÁDECZKY-KARDOSS et al. (1969, 1976), WEIN (1969), SZALAY (1977), LELKES-FELVÁRI (1978), ÁRKAI (1973, 1983) and ÁRKAI and VICZIÁN (1975)) Legend: 1= medium-grade polymetamorphic (pre-Hercynian? - Hercynian - Alpine? ) crystalline basement with 2- syn-kinematic and 3= late-kinematic granitoid formations (Great Plain, South Transdanubia), 4= Hercynian very low- and low-grade metamorphic Early Paleozoic with non-metamorphic Late Paleozoic and Mesozoic, and with 5= post-kinematic Hercynian granitoid intrusion (Transdanubian Central Range and Little Plain), 6= Alpine very low- and low-grade Paleozoic and Mesozoic (Bükkium, Igal-Bükk zone), 7= Alpine low-grade metamorphic Mesozoic (Kőszeg Mts, Penninic unit), 8= area investigated. (Post-Mesozoic formations have been omitted.) The basement rocks were correlated by SZEPESHÁZY (1973) with the oldest formations of the Carpathians (Jaraba series in the Western, Häghimas and Belopotoksky series in the Eastern, Lainic-Paius and Lotru-Sebes series in the Southern Carpathians, Somes and Arada series in the Transylvanian Central (Apuseni) Mts.) and distinguished two episodes: Dalslandian (? ) almandine-amphibolite facies metamorphism with anatexis, and a younger, mostly retrograde (greenschist facies), partly cataclastic one. The major part of the granitoids was interpreted as the product of the anataxis mentioned above. In addition, somevffiat younger granitic intrusions were also mentioned. SZALAY (1977) extrapolated the central (biotite-plagioclase gneiss and mica schist) series containing subordinate amphibolite to the area of the Derecske Depression, and es-