Meteora: a Billion Years of Geological History in Greece to Create a World Heritage Site
Tóm tắt
The rock pinnacles of the Meteora UNESCO World Heritage Site, Central Greece, are global geologic icons but are inadequately studied. Herein, we summarize decades of observations leading to a geohistory and geoenvironmental model of the unique conditions that were essential for their creation. Via this synthesis, we hope thus to encourage further specialized studies of the West Thessaly-Meteora region and to promote the value of updating geological research within World Heritage Sites. The Meteora rock spires owe their existence to ten critical geologic episodes spread over a period of nearly a billion years. Early Miocene sedimentary deposits that make up the rock spires are derived largely from the metamorphic core complex of the exhumed Pelagonian (~ Precambrian to Permian) continental complex and include fragments of “blueschist” derived from the Miocene exhumation of Mount Olympos (subducted Triassic-Eocene carbonate banks). The Miocene sediments are deposited as turbidite formations overlain by “Gilbert-style” deltaic conglomerates. The cobble-turbidite formations comprise submarine canyon fills. The rock spires themselves result from initiation of Pleistocene erosion into a peneplain estimated, very roughly, to ~ 700,000 years in age. This geoenvironment is similar to today’s active sedimentation ongoing off the Malibu coast of California in that the deposits include “Gilbert-style” deltas and turbidites originating from an exhuming metamorphic complex, simultaneously eroding and depositing within off-shore canyons. This comparative model requires a reinterpretation of the “consensus” interpretation of the Miocene oceanic margin south of the Meteora region to one hosting more active energetic deposition and a deeper basin.
Tài liệu tham khảo
Brun J-P, Faccenna C (2008) Exhumation of high-pressure rocks driven by slab rollback. Earth Planet Sci Lett 272:1–7
Brunn J (1956) Contribution a L’Étude Géologique du Pinde Septentrional et D’une Partie de la Macédoine occidentale. Ann Géol Pays Hellén 7:1–358
Caputo R, Pavlides S (1993) Late Cainozoic geodynamic evolution of Thessaly and surroundings (central-northern Greece). Tectonophysics 223:339–362
Cornelius N, Reischmann T, Frei D, Kostopoulos D (2007) Geochronology, geochemistry and isotopes of orthogneiss from the Greek Rhodope. Goldschmidt Conference Abstracts 2007 A-190
Desprairies A (1979) Etude sedimentologique des formations a caractere flysch et molasse, Macedoine, Epire (Grece). Mem Soc Geol Fr 136:180
Doutsos T, Koukouvelos I, Zelilidis A, Kontopoulos N (1994) Intracontinental wedging and postorogenic collapse in the Mesohellenic Trough. Geol Rundsch 83:57–75
Doutsos T, PePiper G, Roronkay K, Koukouvelas I (1993) Kinematics of the central Hellenides. Tectonics 12:36–53
Ferriere J, Chanier F, Reynaud J, Pavlopoulos A, Ditbanjong P, Coutand I (2013) Evolution of the Mesohellenic basin (Greece): a synthesis. In: Emmanuel Skourtsos, The Geology of Greece - Part II, Journal of the Virtual Explorer, Electronic Edition, ISSN 1441-8142, volume 45, paper 1
Ferriere J, Chanier F, Reynaud J-Y, Pavlopoulos A, Ditbanjong P, Migiros G, Coutand I, Stais A, Bailleul J (2011) Tectonic control of the Meteora conglomeratic formations (Mesohellenic basin, Greece). Bull Soc Geol Fr 182:437–450
Ferriere J, Reynaud J, Pavlopoulos A, Bonneau M, Migiros G, Chanier F, Proust J, Gardin S (2004) Geological evolution and geodynamic controls of the intramontane piggyback mesohellenic basin, Greece. Bull Soc Geol Fr 175(4):361–381
Ghikas C, Rassios A (2019) A billion years of history within the Grevena Deskati watershed. Bull Geol Soc Greece 54(1):20–33
Haq B, Hardenbol J, Vail P (1987) Chronology of fluctuating sealevels since the Triassic (250 Myrs ago to present). Science 235:1156–1167
Koutsovitis P, Magganas A, Ntaflos T, Koukouzas N, Rassios A, Soukis K (2020) Petrogenetic constraints on the origin and formation of the Hellenic Triassic rift-related lavas. Lithos Special Issue EMAW-Mantle Paradigms. Vol 368-369
Ori G, Roveri M (1987) Geometries of Gilbert-type deltas and large channels in the Meteora conglomerate, Meso-Hellenic basin (Oligo-Miocene), central Greece. Sedimentology 34-5:845–859
Papazachos G, Papazachos C, Skarlatoudis A, Kallas H, Lekkas E (2016) Modelling macroseismic observations for historical earthquakes: the cases of the M = 7.0, 1954 Sofades and M = 6.8, 1957 Velestino events (central Greece). J Seismol 20:151–165
Poulios I (2014) Past in the present: a living heritage approach - Meteora. Greece Chapter 8:74–87
Rassios A, Ghikas C, Batsi A (2013) The birth of Meteora. Geowonders of the Pindos, Grevena, Greece. 48 pp
Savoyat E, Lalehos N, Bizon G (1972) Geologic map of Greece: KALAMBAKA SHEET. Inst Geo Min Expl Athens, Greece
Schermer E (1993) Geometry and kinematics of continental basement deformation during the Alpine orogeny, Mount Olympos region, Greece. J Struct Geol 15:571–591
Schermer E, Lux D, Burchfiel B (1989) Age and tectonic significance of metamorphic events in the Mt Olympos region, Greece. Bull geol Soc Greece 23:1327
Sidiropoulos G (2017) Urban and population growth: a comparative approach to the Greek cities of 3,000-10,000 inhabitants after 1950. Handbook of Research on Policies and Practices for Sustainable Economic Growth and Regional Development. Chapter 11. 15 pp. https://doi.org/10.4018/978-1-5225-2458-8.ch011
Smith G, Nance D, Genes A (1997) Quaternary glacial history of Mount Olympus, Greece. Geol Soc Am Bull 109(7):809–824
Vamvaka A, Kilias A, Mountrakis D, Papaoikonomou J (2006) Geometry and structural evolution of the Mesohellenic Trough (Greece): a new approach. Geol Soc Lond Spec Publ 260:521–538
Vamvaka A, Spiegel C, Frisch W, Danišík M, Kilias A (2010) Fission track data from the Mesohellenic Trough and the Pelagonian zone in NW Greece: Cenozoic tectonics and exhumation of source areas. Int Geol Rev 52(2-3):223–248. https://doi.org/10.1080/00206810802674402
Yerkes R, Campbell R (2005) Preliminary geologic map of the Los Angeles 30’ by 60’ Quadrangle, Southern California. USGS: Open-File Report 2005-1019
Zelilidis A (2003) The geometry of fan-deltas and related turbidites in narrow linear basins. Geol J 38:31–46
Zelilidis A, Piper D, Kontopoulos N (2002) Sedimentation and basin evolution of the Oligocene-Miocene Mesohellenic basin, Greece. Am Assoc Pet Geol Bull 86:161–182
Zlatkin O, Avigad D, Gerdes A (2014) Peri-Amazonian provenance of the proto-Pelagonian basement (Greece), from zircon U-Pb geochronology and Lu-Hf isotopic geochemistry. Lithos 184-187:379–392