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Original Article

Cretaceous Volcanic Rock Geosites of the Papuk UNESCO Global Geopark (Croatia): Scientific Aspect of Geoheritage in Geoeducation, Geotourism and Geoconservation



Research over decades confirms the geological values of the Papuk UNESCO Global Geopark (Croatia) as a unique place in the regional frame where several orogenic events left their traces through the formation of diverse lithologies. The important part of the geological mosaic, at least in the western part of the Geopark, is the variety of igneous (sub)volcanic rocks. Albite rhyolite at Rupnica and Trešnjevica geosites formed in the Late Cretaceous (~81 Ma), recording the geological event(s) associated with the closure of the Neotethys Ocean. At that time, acidic silicate melt rose fast from the deep crustal levels to the near surface, where cooling caused regular cracking and the development of columnar jointing. Today, these geosites attract the attention of visitors and therefore they are important landmarks that contribute to local (geo)tourism. They are also used as educational sites for both higher education and schoolchildren with Rupko’s Geological School, in which the development of columnar jointing is explained popularly, further enhancing public awareness of the geodiversity and geoheritage of the Mt. Papuk area. The recently opened Geo-info Center in Voćin significantly enhances the geoheritage presentation at the Geopark.

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Ahn KS (2018). Formation mechanism of columnar joints at the Sanin Kaigan Geopark in Japan. Journal of the Korean Earth Science Society. 39(6): 575–592.
Balen D (2011). Evolution of columnar joint polygonal patterns at Rupnica Geosite (Papuk Geopark, Croatia). 10th Alpine workshop "CorseAlp2011", Abstract volume (pp. 5-5).
Balen D & Petrinec Z (2014). Development of columnar jointing in albite rhyolite in a rapidly cooling volcanic environment (Rupnica, Papuk Geopark, Croatia). Terra Nova. 26: 102–110.
Balen D, Horváth P, Tomljenović B, Finger F, Humer B, Pamić J & Árkai P (2006). A record of pre-Variscan Barrovian regional metamorphism in the eastern part of the Slavonian Mountains (NE Croatia). Mineralogy and Petrology. 87: 143–162.
Balen D, Radonić G & Pavić G (2009). Trešnjevica geosite – “volcano traces from the past”. 8th European Geoparks Conference “New Challenges with Geotourism” (pp. 175–175). Geopark Naturtejo, Idanha-a-Nova, Portugal.
Balen D, Radonić G & Pavić G (2010). Order and disorder in columnar joints of Rupnica Geosite (Papuk Geopark). 4th Croatian Geological Congress, Abstracts Book (pp. 137-138). Croatian Geological Survey.
Balen D, Horvath P, Finger F & Starijaš B (2013). Phase equilibrium, geothermobarometric and xenotime age dating constraints on the Alpine metamorphism recorded in chloritoid schists from the southern part of the Tisia Mega-Unit (Slavonian Mts., NE Croatia). International Journal of Earth Sciences. 102: 1091–1109.
Balen D, Massonne H-J & Petrinec Z (2015). Collision related Early Palaeozoic evolution of a crustal fragment from the northern Gondwana margin (Slavonian Mts., Tisia Mega-Unit, Croatia): Reconstruction of the P-T path, timing and paleotectonic implications. Lithos. 232: 211–228.
Balen D, Massonne HJ  & Lihter I (2018). Alpine metamorphism of low-grade schists from the Slavonian Mountains (Croatia): new P-T and geochronological constraints. International Geology Review. 60(3): 288-304.
Balen D, Schneider P, Massonne H-J, Opitz J, Luptakova J, Putiš M & Petrinec Z (2020). The Late Cretaceous A-type alkali-feldspar granite from Mt. Požeška Gora (N Croatia): Potential marker of fast magma ascent in the Europe–Adria suture zone. Geologica Charpathica. 71(4): 361–381.
Biševac V, Balogh K, Balen D & Tibljaš D (2010). Alpine (Cretaceous) very low- to low-grade metamorphism recorded on the illite-muscovite-rich fraction of metasediments from South Tisia (eastern Mt Papuk, Croatia). Geologica Carpathica. 61: 469–481.
Boynton WV (1984). Geochemistry of the rare earth elements: meteorite studies. In: Henderson P (ed), Rare earth element geochemistry (pp. 63–114). New York: Elsevier.
Briševac Z, Maričić A & Brkić V (2021). Croatian Geoheritage Sites with the Best-Case Study Analyses Regarding Former Mining and Petroleum Activities. Geoheritage. 13: 95.  
Budkewitsch P & Robin PY (1994). Modelling the evolution of columnar joints. Journal of Volcanology and Geothermal Research. 59: 219–239.
Bulkeley RB (1693). Part of a letter concerning the Giants Causeway in the County of Atrim in Ireland. Philosophical Transactions of the Royal Society London. 17: 708–710. (cited from Tomkeieff, 1940).
Calderón CE & Sánchez JJ (2023). Geometría y dimensiones de estructuras de disyunción columnar en rocas volcánicas de Colombia. Boletín de Geología. 45(1): 37–51. (in Spanish with English abstract)
Croatian Geological Survey (2009). Geological Map of the Republic of Croatia. 1:300 000. Croatian Geological Survey, Department of Geology (in Croatian).
Cvetković V, Šarić K, Grubić A, Cvijić R & Milošević A (2014). The Upper Cretaceous ophiolite of North Kozara – remnants of an anomalous mid-ocean ridge segment of the Neotethys? Geologica Carpathica. 65(2): 117–130.
Dowling RK (2011). Geotourism’s global growth. Geoheritage 3(1): 1–13.
Goehring L & Morris SW (2005). Order and disorder in columnar joints. Europhysics Letters. 69: 739–745.
Goehring L & Morris SW (2008). The scaling of columnar joints in basalt. Journal of Geophysical Research B. 10203: 113–129.
Goehring L, Lin Z & Morris SW (2006). An experimental investigation of the scaling of columnar joints. Physical Review E. 74: 036115.
Goehring L, Mahadevan L & Morris SW (2009). Nonequilibrium scale selection mechanism for columnar jointing. PNAS. 106(2): 387–392.
Goehring L (2013). Evolving fracture patterns: columnar joints, mud cracks and polygonal terrain. Philosophical Transactions of the Royal Society A. 371: 20120353.
Hetenyi G, Taisne B, Garel F, Medard E, Bosshard S & Mattsson HB (2012). Scales of columnar jointing in igneous rocks: field measurements and controlling factors. Bulletin of Volcanology. 74(2): 457–482.
Horvat M, Klötzli U, Jamičić D, Buda G, Klötzli E & Hauzenberger C (2018). Geochronology of granitoids from Psunj and Papuk Mts., Croatia. Geochronometria. 45(1): 198–210.
Horváth P, Balen D, Finger F, Tomljenović B & Krenn E (2010). Contrasting P–T–t paths from the basement of the Tisia Unit (Slavonian Mts , NE Croatia): application of quantitative phase diagrams and monazite age dating. Lithos. 117: 269–282.
Jagla EA & Rojo AG (2002): Sequential fragmentation: The origin of columnar quasihexagonal patterns. Physical Review E. 65: 026203.
Jamičić D (1983). Structural fabric of the metamorphosed rocks of Mt. Krndija and the eastern part of Mt. Papuk. Geološki vjesnik Zagreb. 36: 51–72. (in Croatian)
Jamičić D (1988). Tectonics of the Slavonian Mts. Dissertation, University of Zagreb. (in Croatian)
Jamičić D (1989). Basic Geological Map of SFRY. 1:100 000, Daruvar sheet L 33-95: Geološki zavod, Zagreb, Savezni geološki zavod, Beograd. (in Croatian)
Jamičić D & Brkić M (1986). Basic Geological Map of SFRY. 1:100 000, Orahovica sheet L 33-96: Geološki zavod, Zagreb, Savezni geološki zavod, Beograd. (in Croatian)
Jamičić D, Brkić M, Crnko J & Vragović M (1987). Sheet description of the Basic Geological Map of SFRY 1:100 000, Orahovica sheet L 33-96: Geološki zavod, Zagreb, Savezni geološki zavod, Beograd. (in Croatian)
Jamičić D, Vragović M & Matičec D (1989). Sheet description of the Basic Geological Map of SFRY 1:100 000, Daruvar sheet L 33-95: Geološki zavod, Zagreb, Savezni geološki zavod, Beograd. (in Croatian)
Kišpatić M (1887). Voćinski augitni andezit (trahit). Rad JAZU. 83(8): 179–185. (in Croatian)
Kišpatić M (1916). Augitandesit (Trachyt) von Voćin. Izvješća JAZU. 8: 311–312. (in German)
Le Bas MJ, Le Maitre RW, Streckeisen A, Zanettin B (1986). A chemical classification of volcanic rocks based on total alkali – silica diagram. Journal of Petrology. 27: 745–750.
Lebti PP, Thouret JC, Worner G & Fornari M (2006). Neogene and Quaternary ignimbrites in the area of Arequipa, Southern Peru: Stratigraphical and petrological correlations. Journal of Volcanology and Geothermal Research. 154(3–4): 251–275.
Lugović B (1983). Extrusive rocks from the NW part of Mt. Papuk (Croatia, Yugoslavia). Geološki vjesnik. 36: 131–156. (in Croatian, with an English summary)
Martin U & Németh K (2004). Mio/Pliocene phreatomagmatic volcanism in the western Pannonian Basin. Geologica Hungarica, Serie Geologica. 26: 192–192.
Mueller W &  Donaldson JA (1992). A Felsic Dyke Swarm Formed under the Sea - the Archean-Hunter- Mine-Group, South-Central Abitibi Belt, Quebec, Canada. Bulletin of Volcanology. 54(7): 602–610.
Official Gazette of the Republic of Croatia (1999). Act of Proclamation of Papuk Nature Park NN 45/1999. (in Croatian)
Official Gazette of the Republic of Croatia (1999). Regulation on the establishment of the Public Institution Nature Park Papuk NN 96/1999. (in Croatian)
Pamić J (1991). Upper Cretaceous basaltoid and pyroclastic rocks from the Voćin volcanic mass on the Papuk Mt. (Slavonija, Northern Croatia). Geološki vjesnik. 44: 161–172. (in Croatian, with an English summary)
Pamić J (1993). Eoalpine to Neoalpine magmatic and metamorphic processes in the northwestern Vardar Zone, the easternmost Periadriatic Zone and the southwestern Pannonian Basin. Tectonophysics. 109: 273–307.
Pamić J (1997). Volcanic rocks of the Sava-Drava interfluve and Baranja (Croatia). Zagreb: Nafta. (in Croatian, with English summary)
Pamić J (2002). The Sava-Vardar Zone of the Dinarides and Hellenides versus the Vardar Ocean. Eclogae Geologicae Helvetiae. 95: 99–113.
Pamić J & Lanphere M (1991). Hercynian granites and metamorphic rocks from the Papuk, Psunj, Krndija and the surrounding basement of the Pannonian Basin (Northern Croatia, Yugoslavia). Geologija Ljubljana. 34: 81–253.
Pamić J, Lanphere M & Mckee E (1988). Radiometric ages of metamorphic and associated igneous rocks of the Slavonian Mountains in the southern part of the Pannonian Basin. Acta Geologica. 18: 13–39.
Pamić J, Balen D & Herak M (2002a). Origin and geodynamic evolution of Late Paleogene magmatic associations along the Periadriatic-Sava-Vardar magmatic belt. Geodinamica Acta. 15(4): 209–231.
Pamić J, Balen D & Tibljaš D (2002b). Petrology and geochemistry of orthoamphibolites from the Variscan metamorphic sequences of the South Tisia in Croatia – an overview with geodynamic implications. International Journal of Earth Sciences (Geologische Rundschau). 91: 787–798.
Public institution Papuk Nature Park (2011). Management Plan of the Papuk Nature Park. (in Croatian)
Public institution Papuk Nature Park (2020). Study of the management of the number of visitors with an action plan for the management of visits in the Papuk Nature Park. (in Croatian)
Schmid SM, Bernoulli D, Fügenschuh B, Matenco L, Schefer S, Schuster R, Tischler M & Ustaszewski K (2008). The Alps–Carpathians–Dinarides orogenic system: correlation and evolution of tectonic units. Swiss Journal of Geosciences. 101: 139–183.
Schmid SM, Fügenschuh B, Kounov A, Maţenco L, Nievergelt P, Oberhänsli R, Pleuger J, Schefer S, Schuster R, Tomljenović B, Ustaszewski K & Van Hinsbergen DJJ (2020). Tectonic units of the Alpine collision zone between Eastern Alps and western Turkey. Gondwana Research. 78: 308–374.
Schneider P & Balen D (2022). Rapid uplift of Late Cretaceous acidic magma from northern Croatia deciphered by studying inclusions in zircon using Raman spectroscopy. EGU General Assembly 2022 Conference Abstracts (pp. EGU22-3895).
Schneider P, Balen D, Opitz J & Massonne H-J (2022). Dating and geochemistry of zircon and apatite from rhyolite at the UNESCO geosite Rupnica (Mt. Papuk, northern Croatia) and the relationship to the Sava Zone. Geologia Croatica75(2): 249–267.
Slovenec D, Belak M, Mišur I, Šegvić B & Schuster R (2020). The early Paleozoic cumulate gabbroic rocks from the southwest part of the Tisza Mega-Unit (Mt. Papuk, NE Croatia): evidence of a Gondwana suture zone. International Journal of Earth Sciences (Geologische Rundschau). 109: 2209–2233.
Tajder M (1956). The albite volcanic rocks of the Voćin area and their origin. Acta geologica 1 (Prirodoslovna istraživanja JAZU). 27: 35–48. (in Croatian with English summary)
Tajder M (1960). Anorthoclase-aegirine-rhyolite from Rupnica brook near Voćin. Acta geologica 2 (Prirodoslovna istraživanja JAZU). 29: 95–101. (in Croatian with English summary)
Tietz O, Buechner J, Lapp M & Scholle T (2018). The Stolpen Volcano in the Lausitz Volcanic Field (East Germany) - volcanological, petrographic and geochemical investigations at the type locality of basalt. Journal of Geosciences. 63(4): 299–315.
Tomkeieff SI (1940). The basalt lavas of the Giant’s Causeway district of Northern Ireland. Bulletin of Volcanology. 6: 89–143.
Toramaru A & Matsumoto T (2004). Columnar joint morphology and cooling rate: A starch-water mixture experiment. Journal of Geophysical Research. 109: B02205.
Tuffen H, Gilbert J &  McGarvie D (2001). Products of an effusive subglacial rhyolite eruption: Blahnukur, Torfajokull, Iceland. Bulletin of Volcanology. 63(2–3): 179–190.
Ustaszewski K, Schmid SM, Lugović B, Schuster R, Schaltegger U, Bernoulli D, Hottinger L, Kounov A, Fügenschuh B & Schefer S (2009). Late Cretaceous intra-oceanic magmatism in the internal Dinarides (northern Bosnia and Herzegovina): implications for the collision of the Adriatic and European plates. Lithos. 108: 106–125.
Ustaszewski K, Kounov A, Schmid SM, Schaltegger U, Krenn E, Frank W & Fügenschuh B (2010). Evolution of the Adria–Europe plate boundary in the northern Dinarides: from continent–continent collision to back-arc extension. Tectonics. 29: TC6017.
Weinberger R (2001). Evolution of polygonal patterns in stratified mud during desiccation: The role of flaw distribution and layer boundaries. GSA Bulletin. 113(1): 20–31.;2
Zhao L, Wang L, Tian M & Wu F (2017). Geochemistry and zircon U-Pb geochronology of the rhyolitic tuff on Port Island, Hong Kong: Implications for early Cretaceous tectonic setting. Geoscience Frontiers. 8(3): 565–581.