The Tokaj Mts, situated in the northeastern part of the inner arc of the Carpathians, forms a part of a Miocene calc-alkaline andesitic-dacitic-rhyolitic volcanic island arc. The ancient volcanic structures were reconstructed on the basis of the 1:50 000-scale and 22 sheets of the 1:25 000-scale geologicpetrologic maps, as well as the revision of the volcanic facies in 150 boreholes. Multispectral and SAR satellite imagery, aerial photos, data and maps of airborne geophysical surveys (magnetic and radiometric), gravity-filtered anomaly maps, geochemical (soil and stream sediment Au, As, Sb, Hg) concentration distribution maps and the K/Ar dating of 132 samples from 80 paleomagnetic measurements were also used.The anomalies were only taken into consideration in the interpretation if the coincident results of at least 3 methods indicated the presence of any volcanic structure. In consequence, 91 map-scale volcanic structures were identified by morphology -complex calderas, single lava domes, volcanic fissures, subvolcanic intrusions, diatremes, stratovolcanoes and postvolcanic formations. Conclusions were also drawn regarding the link to the volcanic structures and prospective occurrences of the mineral resources of the Tokaj Mts: andesite, dacite, welded zeolitic tuff, K-metasomatite, perlite, pitchstone, pumice, bentonitic, illitic, kaolinitic, diatom-bearing and silicified lacustrine sediments, hydrothermal Au-Ag and Pb-Zn veins, and Hg stockwerks.Key words: exploration methods, volcanoes, island arc, calc-alkaline, morphology, complex interpretation IntroductionThe subject matter was developed under the leadership of Tibor Zelenka by Pál Gyarmati, János Kiss, László Vértesy, István Horváth, Zoltán Pécskay and Emõ Szalay, and was supported by OTKA project T022769. The study aimed at Addresses: T. Zelenka: H-3515 Miskolc-Egyetemváros, Hungary, e-mail: tibor.zelenka@gmail.com P. Gyarmati: H-1143 Budapest, Stefánia út 14, Hungary J. Kiss: H-1145 Budapest, Kolumbusz u. 17-23, Hungary Received: March 13, 2012; accepted: April 14, 2012 1788-2281/$ 20.00 © 2012 Central European Geology, Vol. 55/1, pp. 49-84 (2012) DOI: 10.1556/CEuGeol.55.2012 Paleovolcanic reconstruction in the Tokaj Mountains establishing an up-to-date approach to the paleovolcanic reconstruction of the Tokaj Mts based on geologic, volcanological, geophysical, geochemical and geomorphologic data. Exploration historyReviewing the publications on volcanology concerning the Tokaj Mts from the last 250 years, one can find remarkable statements from almost every author.The essays of Beudant (1822), Richthofen (1861) and Wolf (1869) are the pioneers of the recognition of geologic formations. The fundamental monograph of Szabó (1867) entitled "Tokaj-Hegyalja és környékének földtani viszonyai" (Geologic features of Tokaj-Hegyalja and its surroundings) provided the basis for the recognition of the volcanic structure of the mountains. Szádeczky (1897) was the first to recognize that the amphibole andesite had broken through the rhyolite.Pálfy (1927) stu...

Late Apine orogenic volcanism appears immediately after the main phase of folding and thrusting in the Carpathian-Balkan area. The age of the volcainic manifestations is Priabonian-Oligocene (after Ilirian phase) in the Balkan segment and Miocene-Pliocene (after Savian phase) in the Carpathian segment, respectively. Most of the acid volcanics are formed by crustal melting, whereas a smaller part are differentiates of basaltic and intermediate magmas. The first one has higher SiO2 content than the second. K2O content increases from the North to the South: in the Carpatian segment the acid volcanics are Ca-alkaline and high-K Ca-alkaline, whereas in the Balkan segment they are high-K Ca-alkaline and shoshonitic. The Na2O content of the acld volcanics of both segments show less significant variations. The amount of K2O correlates with the thickness of the crust in the different volcanic regions. The petrochemical data of the Carpathian-Balkan acld volcanlcs permit to draw a boundary between high-K Ca-alkaline and shoshonitic series at a level of K2O=4.75 wt % (at 70 wt % SiO2) and K2O=4.9 wt % (at 78 wt % SiO2) in the Peccerillo & Taylor diagam.