Szakáll Sándor - Weiszburg Tamás szerk.: A telkibányai érces terület ásványai (Topographia Mineralogica Hungariae 2. Miskolc, 1994)

A telkibányai ércesedés vulkanotektonikus jellemzői (Zelenka Tibor)

volcanics, intruded into and blocked by the Badenien clay, hydrothermal polymetallic mineralization took place forming ore veins. In the potassium metasomatized bodies, below the zone of quartz veins, pyrite-chalcopyrite and sphalerite have been formed with quartz-carbonate veins as well as disseminated in the country rocks. This paragenesis in association appears also in the zone of carbonatic and epidotic-propylitic alteration of the host andésite. The termination of the Middle Miocene volcanic activities are represented by dacitic domes, tuffs of dacitic-rhyolitic composition and tuff-breccia mantels accumulated in part - under water (Fig. 4). During the Upper Miocene (Sarmatian) the sinking of the graben and alternating accumulation of the faunal marine clays and clayey marls were going on (Fig. 5). On the satellite images the centres of independent rhyolite eruptions, tuff-sommes and tuff-floods can be easily identified (Horváth et al., 1989). At Telkibánya, side by side, two late andésite calderas of 5-7 km diameter can also be recognized with parasite cones along the margin (Fig. 6). Along the fault, running from NNW to SSE and ENE to WSW, directions and dimension of movement of structural- tectonic elements remain unclear. Magma of intermedier composition was intruded into the southern part of the collapsed caldera and was metasomatized later on (Fig. 7). The position of the subvolcanic intrusion at in the depth is well outlined by the gravimetric surveys. The subvolcanic intrusion has contacted the Sarmatian clay and partly metasomatized the 1-8. ábrák. A telkibányai terület fejlődéstörténeti lépcsői: 1. árokképződés, transzgresszió; 2. ignimbri

tes vulkanizmus; 3. korai andezit kaldera; 4. kaldera beszakadás, korai intrúzió, ércesedés, tenger elöntés, dácit vulkán; 5. riolitos vulkanizmus; 6. késői andezit kaldera; 7. kaldera beszakadás, késői intrúzió, ércesedés; 8. riolit és bázisos andezit vulkanizmus, teletermás ércesedés. Jelmagyarázat: 1. pannon üledék, 2. limnikus üledék, 3. pannon bázisos andezit, 4. pannon riolit, 5. kálimetaszomatit késői intrúzió, 6. szarmata andezit, 7. szarmata riolit, riolittufa, 8. szarmata üledék, 9. bádeni dácit, dácittufa, 10. bádeni üledék, 11. mikrodiorit korai intrúzió, 12. bádeni andezit, 13. bádeni riolit, 14. paleozoós metamorfit, 15. érces telér breccsával, 16. érces Stockwerk, 17. törés Fig. 1-8 Volcano-tectonic evolution phases in the Telkibánya region: 1. graben formation, transgression; 2. ignimbritic volcanism; 3. first andésite caldera phase; 4. first caldera collapsed, first intrusion phase, ore mineralization, transgression, dacite volcano; 5. rhyolitic volcanism; 6. second andésite caldera phase; 7. second caldera collapsed, second intrusion phase, ore mineralization; 8. rhyolitic and andesitic volcanism, telethermal ore mineralization. Legend: 1. Pannonian sediments, 2. limnic sediments, 3. Pannonian andésite, 4. Pannonian rhyolite, 5. potash metasomatized intrusive bodies (second intrusion phase), 6. Sarmatian andésite, 7. Sarmatian rhyolite and rhyolite tuff, 8. Sarmatian sediments, 9. Badenian dacite, dacite tuff, 10. Badenian sediments, 11. microdiorite intrusive bodies (first intrusion phase), 12. Badenian andésite, 13. Badenian rhyolite, 14. Paleozoic metamorphites, 15. brecciated ore vein, 16. ore-bearing Stockwerk, 17. fault