Abstract
Siliciclastic metasediments from the islands of Samos and Syros, Cycladic blueschist unit, Greece, were studied to determine maximum sedimentation ages. Four samples from the Ampelos unit on Samos yielded age distribution spectra that range from ~320 Ma to ~3.2 Ga with a dominance of Cambrian–Neoproterozoic zircons (500–1,100 Ma). The youngest well-constrained age groups cluster at 500–550 Ma. Our results allow to link the Samos metasediments with occurrences showing similar age distribution patterns elsewhere in the eastern Mediterranean region (Greece, Turkey, Libya, Israel and Jordan) that record the influx of ‘Pan-African’ detritus. The lack of post-500-Ma zircons in the Samos samples is in marked contrast to the data from Syros that indicates Triassic to Cretaceous depositional ages. The samples from Syros were collected from the matrix of a meta-ophiolitic mélange that is exposed near the top of the metamorphic succession as well as from outcrops representing the basal part of the underlying marble-schist sequence. The zircon populations from Syros were mainly supplied by Mesozoic sources dominated by Triassic protolith ages. Subordinate is the importance of pre-Triassic zircons, but this may reflect bias induced by the research strategy. Sediment accumulation continued until Late Cretaceous time, but the overall contribution of Jurassic to Cretaceous detritus is more limited. Zircon populations are dominated by grains with small degree of rounding suggesting relatively short sediment transportation. Available observations are in accordance with a model suggesting deposition close to the magmatic source rocks.
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References
Altherr R, Kreuzer H, Wendt I, Lenz H, Wagner GA, Keller J, Harre W, Höhndorf A (1982) A late Oligocene/early Miocene high temperature belt in the Attic-Cycladic crystalline complex (SE Pelagonian, Greece). Geol Jahrb E 23:97–164
Anders B, Reischmann T, Kostopoulos D (2007) Zircon geochronology of basement rocks from the Pelagonian Zone, Greece: constraints on the pre-Alpine evolution of the westernmost Internal Hellenides. Int J Earth Sci 96:639–661
Andriessen PAM, Banga G, Hebeda EH (1987) Isotopic age study of pre-Alpine rocks in the basal units on Naxos, Sikinos and Ios, Greek Cyclades. Geol Mijnb 66:3–14
Avigad D, Kolodner K, McWilliams M, Persing H, Weissbrod T (2003) Origin of northern Gondwana Cambrian sandstone revealed by detrital zircon SHRIMP dating. Geology 31:227–230
Baldwin SL (1996) Contrasting P-T–t histories for blueschists from the western Baja terrane and Aegean: effects of synsubduction exhumation and backarc extension. In: Bebout GE, Scholl DW, Kirby SH, Platt J (eds) Subduction top to bottom. American Geophysical Union, Washington, pp 135–141
Bolhar R, Ring U, Allen CM (2010) An integrated zircon geochronological and geochemical investigation into the Miocene plutonic evolution of the Cyclades, Aegean Sea, Greece: Part 1: Geochronology. Contrib Mineral Petrol 160:719–742
Bröcker M (1990) Die Blauschiefer-Grünschiefer-Assoziation der Insel Tinos (Kykladen, Griechenland) und ihre kontaktmetamorphe Überprägung. Geotekt Forsch 74:1–107
Bröcker M, Enders M (1999) U-Pb zircon geochronology of unusual eclogite-facies rocks from Syros and Tinos (Cyclades, Greece). Geol Mag 136:111–118
Bröcker M, Enders M (2001) Unusual bulk-rock compositions in eclogite-facies rocks from Syros and Tinos (Cyclades, Greece): implications for U-Pb zircon geochronology. Chem Geol 175:581–603
Bröcker M, Franz L (1998) Rb–Sr isotope studies on Tinos Island (Cyclades, Greece): additional time constraints for metamorphism, extent of infiltration-controlled overprinting and deformational activity. Geol Mag 135:369–382
Bröcker M, Pidgeon RT (2007) Protolith ages of meta-igneous and meta-tuffaceous rocks from the Cycladic blueschist unit, Greece: results of a reconnaissance U-Pb zircon study. J Geol 115:83–98
Bröcker M, Kreuzer H, Matthews A, Okrusch M (1993) 40Ar/39Ar and oxygen isotope studies of polymetamorphism from Tinos Island, Cycladic blueschist belt. J Metamorph Geol 11:223–240
Bröcker M, Baldwin S, Arkudas R (2013) The geologic significance of 40Ar/39Ar and Rb–Sr white mica ages from Syros and Sifnos, Greece: a record of continuous (re)crystallization during exhumation? J Metamorph Geol 31:629–646
Bröcker M, Löwen K, Rodionov N (2014) Unraveling protolith ages of meta-gabbros from Samos and the Attic-Cycladic Crystalline Belt, Greece: results of a U-Pb zircon and Sr–Nd whole rock study. Lithos 198–199:234–248
Bröcker M, Keasling A (2006) Ionprobe U-Pb zircon ages from the high-pressure/low-temperature mélange of Syros, Greece: age diversity and the importance of pre-Eocene subduction. J Metamorph Geol 24:615–631
Bulle F, Bröcker M, Gärtner C, Keasling A (2010) Geochemistry and geochronology of HP mélanges from Tinos and Andros, Cycladic blueschist belt, Greece. Lithos 117:61–81
Candan O, Dora OÖ, Oberhänsli R, Oelsner FC, Dürr ST (1997) Blueschist relics in the Mesozoic series of the Menderes Massif and correlation with Samos Island, Cyclades. Schweiz Min Petrogr 77:95–99
Chatzaras V, Dörr W, Finger F, Xypolias P, Zulauf G (2013) U–Pb single zircon ages and geochemistry of metagranitoid rocks in the Cycladic Blueschists (Evia Island): implications for the Triassic tectonic setting of Greece. Tectonophysics 595–596:125–139
Chen G (1995) Evolution of the high- and medium-pressure metamorphic rocks on the island of Samos, Greece. Ann Geol Pays Hell 36:799–915
Dixon JE, Ridley JR (1987) Syros. In: Helgeson HC (ed) Chemical transport in metasomatic processes. Reidel Publishing Company, Dordrecht, pp 489–501
Dürr S, Altherr R, Keller J, Okrusch M, Seidel E (1978) The Median Aegean crystalline belt: stratigraphy, structure, metamorphism, magmatism. In: Closs H, Roeder DH, Schmidt K (eds), Alps, Apennines, Hellenides. IUGS report no. 38, Schweizerbart, Stuttgart, pp. 455–477
Engel M, Reischmann T (1998) Single zircon geochronology of orthogneisses from Paros, Greece. Bull Geol Soc Greece 32:91–99
Feenstra A, Petrakakis K, Rhede D (2007) Variscan relicts in Alpine high-P pelitic rocks from Samos (Greece): evidence from multi-stage garnet and its included minerals. J Metamorph Geol 25:1011–1033
Fu B, Valley JW, Kita NT, Spicuzza MJ, Paton C, Tsujimori T, Bröcker M, Harlow GE (2010) Multiple origins of zircons in jadeitite. Contrib Mineral Petrol 159:769–780
Fu B, Paul B, Cliff J, Bröcker M, Bulle F (2012) O-Hf isotope constraints on the origin of zircon in high-pressure mélange blocks and associated matrix rocks from Tinos and Syros, Greece. Eur J Min 24:277–287
Gärtner C, Bröcker M, Strauss H, Farber F (2011) Strontium, carbon and oxygen isotope geochemistry of marbles from the Cycladic blueschist belt, Greece. Geol Mag 148:511–528
Gehrels G (2011) Detrital zircon U-Pb geochronology: current methods and new opportunities. In: Busby C, Perez Azor A (eds) Tectonics of Sedimentary Basins: recent advances. Wiley-Blackwell, Hoboken, pp 47–62
Gessner K, Collins AS, Ring U, Güngör T (2004) Structural and thermal history of poly-orogenic basement: U-Pb geochronology of granitoid rocks in the southern Menderes Massif, Western Turkey. J Geol Soc London 161:93–101
Gessner K, Ring U, Güngör T (2011) Field guide to Samos and the Menderes Massif: Along-Strike variations in the Mediterranean Tethyan orogen. Geological Society of America, vol 23, pp 1–52
Henjes-Kunst F, Kreuzer H (1982) Isotopic dating of pre-Alpidic rocks from the Island of Ios (Cyclades, Greece). Contrib Mineral Petrol 80:245–253
Hetzel R, Reischmann T (1996) Intrusion age of Pan-African augen gneisses in the southern Menderes Massif and the age of cooling after Alpine ductile extensional deformation. Geol Mag 133:565–572
Hetzel R, Romer RL, Candan O, Passchier CW (1998) Geology of the Bozdag area, central Menderes Massif, SW Turkey: Pan-African basement and Alpine deformation. Int J Earth Sci 87:394–406
Himmerkus F, Reischmann T, Kostopoulos D (2009) Triassic rift-related meta-granites in the Internal Hellenides, Greece. Geol Mag 146:252–265
Jackson S, Pearson NJ, Griffin WL, Belousova EA (2004) The application of laser ablation-inductively coupled plasma-mass spectrometry to in situ U-Pb zircon geochronology. Chem Geol 211:47–69
Jolivet L, Brun JP (2010) Cenozoic geodynamic evolution of the Aegean. Int J Earth Sci 99:109–138
Jolivet L, Lecomte E, Huet B, Denèle Y, Lacombe O, Labrousse L, Le Pourhiet L, Mehl C (2010) The north Cycladic detachment system. Earth Planet Sci Lett 289:87–104
Keay S (1998) The geological evolution of the Cyclades, Greece: constraints from SHRIMP U-Pb geochronology. Dissertation, Australian National University, Canberra
Keay S, Lister G (2002) African provenance for the metasediments and metaigneous rocks of the Cyclades, Aegean Sea, Greece. Geology 30:235–238
Keiter M, Ballhaus C, Tomaschek F (2011) A new geological map of the Island of Syros (Aegean Sea, Greece): implications for lithostratigraphy and structural history of the Cycladic Blueschist Unit. Geol Soc Am Spec Paper 481:43
Kock S, Martini R, Reischmann T, Stampfli GM (2007) Detrital zircon and micropalaeontological ages as new constraints for the lowermost tectonic unit (Talea Ori unit) of Crete, Greece. Palaeogeogr Palaeoclimatol Palaeoecol 243:307–312
Kolodner K, Avigad D, McWilliams M, Wooden JL, Weissbrod T, Feinstein S (2006) Provenance of north Gondwana Cambrian-Ordovician sandstone: U-Pb SHRIMP dating of detrital zircons from Israel and Jordan. Geol Mag 143:367–391
Kooijman E, Berndt J, Mezger K (2012) U-Pb dating of zircon by laser ablation ICP-MS: recent improvements and new insights. Eur J Min 24:5–21
Koralay OE, Satir M, Dora OO (2001) Geochemical and geochronological evidence for Early Triassic calc-alkaline magmatism in the Menderes Massif, western Turkey. Int J Earth Sci 89:822–835
Koralay OE, Dora OÖ, Chen F, Satir M, Candan O (2004) Geochemistry and geochronology of orthogneisses in the Derbent (Alasehir) Area, eastern part of the Ödemis-Kiraz Submassif, Menderes Massif: Pan-African magmatic activity. Turk J Earth Sci 13:37–61
Kydonakis K, Kostopoulos D, Poujol M, Brun JP, Papanikolaou D, Paquette JL (2013) The dispersal of the Gondwana super-fan system in the eastern Mediterranean: new insights from detrital zircon geochronology. Gondwana Res. doi:10.1016/j.gr.2013.05.009
Lagos M, Scherer EE, Tomaschek F, Münker C, Keiter M, Berndt J, Ballhaus C (2007) High precision Lu–Hf geochronology of Eocene eclogite-facies rocks from Syros, Cyclades, Greece. Chem Geol 243:16–35
Liati A, Skarpelis N, Pe-Piper G (2009) Late Miocene magmatic activity in the Attic-Cycladic Belt of the Aegean (Lavrion, SE Attica, Greece): implications for the geodynamic evolution and timing of ore deposition. Geol Mag 146:732–742
Liati A, Gebauer D, Fanning CM (2011) Geochronology of the Alpine (U)HP Rhodope zone: a review of isotopic ages and constraints on the geodynamic evolution. In: Dobrzhinetskaya L, Faryad SW, Wallis S, Cuthbert S (eds) Ultrahigh-pressure metamorphism, 25 years after the discovery of coesite and diamond. Elsevier, Amsterdam, pp 295–324
Liati A, Skarpelis N, Fanning CM (2013) Late Permian-Early Triassic igneous activity in the Attic-Cycladic Belt (Attica): New geochronological data and geodynamic implications. Tectonophysics 595–596:140–147
Lode S, Zulauf G, Dörr W, Fiala J, Lahaye V, Xypolias P (2008) Triassic (Cimmerian) orogenic processes in the External Hellenides—Kythira, Greece: new age constraints from radiometric dating of felsic orthogneiss. Geotectonic Res 95:102–104
Loos S, Reischmann T (1999) The evolution of the southern Menderes Massif in SW Turkey as revealed by zircon dating. J Geol Soc London 156:1021–1030
Ludwig KR (2005) Users manual for ISOPLOT/Ex 3.41c: A geochronological toolkit for Microsoft Excel. Berkeley Geochronology Center, Spec Publ 4:70
Maluski H, Bonneau M, Kienast JR (1987) Dating the metamorphic events in the Cycladic area: 39Ar/40Ar data from metamorphic rocks of the island of Syros (Greece). Bull Soc Geol France 8(3):833–842
Marsellos AE, Foster DA, Kamenov GD, Kyriakopoulos K (2012) Detrital zircon U-Pb data from the Hellenic south Aegean belts: constraints on the age and source of the South Aegean basement. J Virt Explor. doi:10.3809/jvirtex.2011.00284
Meinhold G, Frei D (2008) Detrital zircon ages from the islands of Inousses and Psara, Aegean Sea, Greece: constraints on depositional age and provenance. Geol Mag 145:886–891
Meinhold G, Kostopoulos DK (2013) The Circum-Rhodope belt, northern Greece: age, provenance, and tectonic setting. Tectonophysics 595–596:55–68
Meinhold G, Reischmann T, D, Lehnert O, Matukov D, Sergeev S (2008) Provenance of sediments during subduction of Palaeotethys: detrital zircon ages and olistolith analysis in Palaeozoic sediments from Chios Island, Greece. Palaeogeogr Palaeoclimatol Palaeoecol 263:71–91
Meinhold G, Kostopoulos D, Reischmann T, Frei D, BouDagher-Fadel MK (2009) Geochemistry, provenance and stratigraphic age of metasedimentary rocks from the eastern Vardar suture zone, northern Greece. Palaeogeogr Palaeoclimatol Palaeoecol 277:199–225
Meinhold G, Reischmann T, Kostopoulos D, Frei D, Larionov AN (2010a) Mineral chemical and geochronological constraints on the age and provenance of the eastern Circum-Rhodope Belt low-grade metasedimentary rocks, NE Greece. Sediment Geol 229:207–223
Meinhold G, Kostopoulos D, Frei D, Himmerkus F, Reischmann T (2010b) U-Pb LA-SF-ICP-MS zircon geochronology of the Serbo-Macedonian Massif, Greece: palaeotectonic constraints for Gondwana-derived terranes in the Eastern Mediterranean. Int J Earth Sci 99:813–832
Meinhold G, Morton AC, Fanning CM, Frei D, Howard JP, Phillips RJ, Strogen D, Whitham AG (2011) Evidence from detrital zircons for recycling of Mesoproterozoic and Neoproterozoic crust recorded in Paleozoic and Mesozoic sandstones of southern Libya. Earth Planet Sci Lett 312:164–175
Meinhold G, Morton AC, Avigad D (2013) New insights into peri-Gondwana paleogeography and the Gondwana super-fan system from detrital zircon U-Pb ages. Gondwana Res 23:661–665
Melidonis NG (1980) The geology of Greece: the geological structure and mineral deposits of Tinos island (Cyclades, Greece). Inst Geol Min Explor Athens 13:1–80
Miller DP, Marschall HR, Schumacher JC (2009) Metasomatic formation and petrology of blueschist-facies hybrid rocks from Syros (Greece): implications for reactions at the slab–mantle interface. Lithos 107:53–67
Okay AI, Satır M, Maluskı H, Sİyako M, Monıé P, Metzger R, Akyüz HS (1996) Paleo- and neo-tethyan events in northwest Turkey: Geological and geochronological constraints. In: Yın A, Harrıson M (eds) Tectonics of Asia. Cambridge University Press, Cambridge, pp 420–441
Okay AI, Tüysüz O, Satır M, Özkan-Altıner S, Altıner D, Sherlock S, Eren RE (2006) Cretaceous and Triassic subduction-accretion, HP-LT metamorphism and continental growth in the Central Pontides, Turkey. Geol Soc Am Bull 118:1247–1269
Okrusch M, Bröcker M (1990) Eclogite facies rocks in the Cycladic blueschist belt, Greece: a review. Eur J Mineral 2:451–478
Okrusch M, Richter P, Katsikatsos G (1984) High-pressure rocks of Samos, Greece. In: Dixon JE, Robertson AHF (eds) The geological evolution of the eastern Mediterranean. Geol Soc Lond Spec Publ 17, Blackwell, Oxford, pp. 529–536
Özer S, Sözbilir H, Özkar I, Toker V, Sarı B (2001) Stratigraphy of upper Cretaceous-Palaeogene sequences in the southern and eastern Menderes Massif (western Turkey). Int J Earth Sci 89:852–866
Papanikolaou D (1978) Contribution to the geology of the Aegean Sea; the island of Andros. Ann Geol Pays Hell 29:477–553
Patzak M, Okrusch M, Kreuzer H (1994) The Akrotiri unit on the island of Tinos, Cyclades, Greece: witness to a lost terrane of Late Cretaceous age. Neues Jahrb Geol Palaontol Abh 194:211–252
Photiades A, Keay S (2003) Geological and geochronological data for Sikinos and Folegandros metamorphic units (Cyclades, Greece): their tectono-stratigraphic significance. Bull Geol Soc Greece 35:34–45
Putlitz B, Cosca MA, Schumacher JC (2005) Prograde mica 40Ar/39Ar growth ages recorded in high-pressure rocks (Syros, Cyclades, Greece). Chem Geol 214:79–98
Reischmann T (1998) Pre-Alpine origin of tectonic units from the metamorphic complex of Naxos, Greece, identified by single zircon Pb/Pb dating. Bull Geol Soc Greece 32:101–111
Ridley J (1984) Listric normal faulting and the reconstruction of the synmetamorphic structural pile of the Cyclades. In: Dixon JE, Robertson AHF (eds) The geological evolution of the eastern Mediterranean. Geol Soc Lond Spec Publ 17, Blackwell, London, pp. 755–761
Ring U, Layer PW (2003) High-pressure metamorphism in the Aegean, eastern Mediterranean: underplating and exhumation from the Late Cretaceous until the Miocene to recent above the retreating Hellenic subduction zone. Tectonics 22(1022):23p
Ring U, Laws S, Bernet M (1999) Structural analysis of a complex nappe sequence and late-orogenic basins from the Aegean Island of Samos, Greece. J Struct Geol 21:1575–1601
Ring U, Okrusch M, Will T (2007) Samos Island, Part I: metamorphosed and non-metamorphosed nappes, and sedimentary basins. J Virtual Explor 27:5
Ring U, Glodny J, Will T, Thomson S (2010) The Hellenic subduction system: high-pressure metamorphism, exhumation, normal faulting, and large-scale extension. Annu Rev Earth Planet Sci 38:45–76
Schliestedt M, Altherr R, Matthews A (1987) Evolution of the Cycladic crystalline complex: petrology, isotope geochemistry and geochronology. In: Helgeson HC (ed) Chemical transport in metasomatic processes. NATO ASI series. Reidel Publishing Company, Dordrecht, pp 389–428
Stacey JS, Kramers JD (1975) Approximation of terrestrial lead isotope evolution by a two-stage model. Earth Planet Sci Lett 26:207–221
Steiger RH, Jäger E (1977) Subcommission on geochronology: convention on the use of decay constants in geo- and cosmochronology. Earth Planet Sci Lett 36:359–362
Tomaschek F, Kennedy AK, Villa IM, Lagos M, Ballhaus C (2003) Zircons from Syros, Cyclades, Greece—recrystallization and mobilization of zircon during high-pressure metamorphism. J Petrol 44:1977–2002
Tomaschek F, Keiter M, Kennedy AK, Ballhaus C (2008) Pre-alpine basement within the Northern Cycladic Blueschist unit on Syros Island, Greece. Z dtsch Ges Geowiss 159:521–532
Ustaömer PA, Mundil R, Renne P (2005) U/Pb and Pb/Pb zircon ages for arc-related intrusions of the Bolu Massif (W Pontides, NW Turkey): evidence for late Precambrian (Cadomian) age. Terra Nova 17:215–223
Ustaömer PA, Ustaömer T, Gerdes A, Zulauf G (2011) Detrital zircon ages from Ordovician quartzites of the İstanbul exotic terrane (NW Turkey): evidence for Amazonian affinity. Int J Earth Sci 100:23–41
Ustaömer PA, Ustaömer T, Robertson AHF (2012) Ion probe U-Pb dating of the Central Sakarya basement: a peri-Gondwana terrane intruded by lower Carboniferous subduction/collision-related granitic rocks. Turk J Earth Sci 21:905–932
Vavassis I, De Bono A, Stampfli GM, Giorgis D, Valloton A, Amelin Y (2000) U-Pb and Ar–Ar geochronological data from the Pelagonian basement in Evia (Greece): geodynamic implications for the evolution of Paleotethys. Schweiz Miner Petrog 80:21–43
Wiedenbeck M, Allé P, Corfu F, Griffin WL, Meier M, Oberli F, von Quadt A, Roddick JC, Spiegel W (1995) Three natural zircon standards for U-Th-Pb, Lu–Hf, trace element and REE analyses. Geostand Newsl 19:1–23
Wijbrans JR, Schliestedt M, York D (1990) Single grain argon laser probe dating of phengites from the blueschist to greenschist transition on Sifnos (Cyclades, Greece). Contrib Mineral Petrol 104:582–593
Will T, Okrusch M, Schmädicke E, Chen G (1998) Phase relations in the greenschist-blueschist-amphibolite-eclogite facies in the system Na2O-CaO-FeO-MgO-Al2O3-SiO2-H2O (NCFMASH), with application to metamorphic rocks from Samos, Greece. Contrib Mineral Petrol 132:85–102
Xypolias P, Dörr W, Zulauf G (2006) Late Carboniferous plutonism within the pre-Alpine basement of the External Hellenides (Kithira, Greece): evidence from U-Pb zircon dating. J Geol Soc London 163:539–547
Zulauf G, Romano SS, Dörr W, Fiala J (2007) Crete and the Minoan terranes: age constraints from U-Pb dating of detrital zircons. Geol Soc Am Spec Pap 423:401–411
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This study was funded by the Deutsche Forschungsgemeinschaft (Grant BR 1068/17-1). Reviews by G. Meinhold and an anonymous reviewer helped to improve our presentation and are greatly appreciated.
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Löwen, K., Bröcker, M. & Berndt, J. Depositional ages of clastic metasediments from Samos and Syros, Greece: results of a detrital zircon study. Int J Earth Sci (Geol Rundsch) 104, 205–220 (2015). https://doi.org/10.1007/s00531-014-1058-x
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DOI: https://doi.org/10.1007/s00531-014-1058-x