Triassic-Jurassic arc magmatism in the Pontides as revealed by the U-Pb detrital zircon ages in the Jurassic sandstones of northeastern Turkey
The Eastern Pontides were located at the southern active margin of
Laurasia during Mesozoic time. Jurassic volcaniclastic sediments and
volcanic rocks of the Pontides represent products of the arc magmatism
above a north-dipping subduction zone. Despite the wide distribution of
the Jurassic volcaniclastic/volcanic succession, the precise age of the
Jurassic volcaniclastic sequence and that of the synsedimentary
magmatism are poorly constrained. Here we present U-Pb detrital zircon
ages from two Jurassic sandstones belonging to the Şenköy Formation of
the Eastern Pontides. One sample is taken from the base of the Şenköy
Formation unconformably overlying the late Carboniferous Gümüşhane
granite. The depositional age of this sandstone is constrained as late
Sinemurian-Pliensbachian based on the faunal assemblage of the overlying
Ammonitico Rosso type carbonates. Detrital zircon grains from this
sample yielded an unexpected component of 203.4 ± 0.2 Ma (Latest
Triassic, Rhaetian) U-Pb age, indicating the existence of Late Triassic
magmatic activity in the region that has not been reported yet from the
exposed magmatic bodies or from the detrital zircon ages. The sample
taken from the upper part of the Jurassic succession yielded a youngest
U-Pb age component of 155.9 ± 1.8 Ma, indicating that the depositional
age of the Jurassic volcaniclastic succession extends from the Early
Jurassic (Sinemurian), as revealed by the fossil content and abundant
U-Pb detrital zircon ages, to the Late Jurassic
(Oxfordian-Kimmeridgian). The detrital zircon ages from this study
together with those from the literature indicate arc magmatism on the
southern margin of Laurasia during the Triassic and Late Jurassic
(250-156 Ma).
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- Adamia S, Zakariadze G, Chkhotua T, Sadradze N, Tsereteli, N,
Chabukiani A, Gventsadze A (2011). Geology of the Caucasus: a
review. Turk J Earth Sci 20: 489-544.
Akdeniz N, Güven, IH (2002). Geological Map of Turkey, 1:500.000,
Trabzon. Ankara, Turkey: General Directorate of Mineral
Research and Exploration.
Akdoğan R, Okay AI, Sunal G, Tari G, Meinhold G, Kylander-Clark
ARC (2017). Provenance of a large Lower Cretaceous turbidite
submarine fan complex on the active Laurasian margin. J Asian
Earth Sci 134: 309-329.
Alkaya F, Meister C, (1995). Liassic Ammonites from the central and
eastern Pontides (Ankara and Kelkit areas, Turkey). Revue de
Paléobiologie14: 125-193.
Altıner D, Koçyiğit A, Farinacci A, Nicosia U, Conti MA (1991).
Jurassic–Lower Cretaceous stratigraphy and paleogeographic
evolution of the southern part of north-western Anatolia
(Turkey). Geologica Romana 27: 13-80.
Aysal N, Ustaömer T, Öngen S, Keskin M, Köksal S, Peytcheva I, Fanning
M (2012). Origin of the Early-Middle Devonian magmatism in
the Sakarya Zone, NW Turkey: Geochronology, geochemistry
and isotope systematics. J Asian Earth Sci 45: 201-222.
Barrier E, Vrielynck B (2008). Atlas of Paleotectonic Maps of the Middle
East (MEBE Program). Atlas of 14 Maps (Tectono–Sedimentary–
Palinspastic maps from Late Norian to Pliocene), 1:18 500 000
scale. Paris, France: Univesité Pierre et Marie Curie.
Bergougnan H (1987). Etudes geologiques dans l’Est Anatolien. PhD,
Univesité Pierre et Marie Curie, Paris, France.
Boztuğ D, Debon F, Le Fort P, Yılmaz O (1995). High compositional
diversity of the Middle Jurassic Kastamonu Plutonic Belt,
northern Anatolia, Turkey. Turk J Earth Sci 4: 67-86.
Çapkınoğlu Ş (2003). First records of conodonts from “the Permo-
Carboniferous of Demirözü (Bayburt)”, Eastern Pontides, NE
Turkey. Turk J Earth Sci 12: 199-207.
Cawood PA, Hawkesworth CJ, Dhuime B, (2012). Detrital zircon record
and tectonic setting. Geology 40: 875-878.
Çelik ÖF, Marzoli A, Marschik R, Chiaradia M, Neubauer F, Öz İ
(2011). Early–Middle Jurassic intra-oceanic subduction in the
İzmir-Ankara-Erzincan Ocean, Northern Turkey. Tectonophysics
509: 120-134.
Dercourt J, Ricou LE, Vrielynck B, editors (1993). Atlas Tethys
Palaeoenvironmental Maps. Paris, France: Gauthier-Villars, Paris.
Dercourt J, Zonenshain LP, Ricou LE, Le Pichon X, Knipper AL,
Grandjaquet C, Sbortshikov IM, Geussant J, Lepvrier C,
Pechersku DH et al. (1986). Geological evolution of the Tethys
belt from the Atlantic to the Pamirs since the Lias. Tectonophysics
123: 241-315.
Dokuz A (2011). A slab detachment and delamination model for the
generation of Carboniferous high potassium I-type magmatism
in the Eastern Pontides, NE Turkey: Köse composite pluton.
Gondwana Res 19: 926-944.
Dokuz A, Karslı O, Chen B, Uysal I (2010). Sources and petrogenesis
of Jurassic granitoids in the Yusufeli area, Northeastern
Turkey: implications for pre- and post-collisional lithospheric
thinning of the eastern Pontides. Tectonophysics 480: 258-
279.
Dokuz A, Tanyolu E (2006). Geochemical constraints on the
provenance, mineral sorting and subaerial weathering of
Lower Jurassic and Upper Cretaceous clastic rocks of the
Eastern Pontides, Yusufeli (Artvin), NE Turkey. Turk J Earth
Sci 15: 181-209.
Dokuz A, Tanyolu E, Genç S (2006). A mantle-and a lower crustderived
bimodal suite in the Yusufeli (Artvin) area, NE
Turkey: trace element and REE evidence for subductionrelated
rift origin of Early Jurassic Demirkent intrusive
complex. Int J Earth Sci 95: 370-394.
Dunkl I, Mikes T, Simon K, von Eynatten H (2008). Brief
introduction to the Windows program Pepita: data
visualization, and reduction, outlier rejection, calculation of
trace element ratios and concentrations from LA-ICP-MS
data. In: Sylvester P, editor. Laser Ablation ICP-MS in the
Earth Sciences: Current Practices and Outstanding Issues.
Quebec City, Canada: Mineralogical Association of Canada,
pp. 334-340.
Dunkl I, Székely B (2002). Component analysis with visualization
of fitting–PopShare, a Windows program for data analysis.
Geochim Cosmochim Ac 66: 201.
Genç SC, Tüysüz O (2010). Tectonic setting of the Jurassic bimodal
magmatism in the Sakarya Zone (Central and Western
Pontides), Northern Turkey: a geochemical and isotopic
approach. Lithos 118: 95-111.
Gradstein FM, Ogg JG, Schmitz MD, Ogg GM (2012). The Geologic
Time Scale 2012. Boston, MA, USA: Elsevier.
Hakyemez HY, Papak I (2002). Geological Map of Turkey,
1:500,000, Samsun. Ankara, Turkey: General Directorate of
Mineral Research and Exploration.
Kandemir R (2004). Sedimentary characteristics and depositional
conditions of Lower-Middle Jurassic Şenköy Formation
in and around Gümüşhane. PhD, Karadeniz Technical
University, Trabzon, Turkey.
Kandemir R, Lerosey-Aubril R (2011). First report of a trilobite
in the Carboniferous of Eastern Pontides, NE Turkey. Turk J
Earth Sci 20: 179-183.
Kandemir R, Yılmaz C (2009). Lithostratigraphy, facies, and
deposition environment of the lower Jurassic Ammonitico
Rosso type sediments (ARTS) in the Gümüşhane area, NE
Turkey: implications for the opening of the northern branch
of the Neo-Tethys Ocean. J Asian Earth Sci 34: 586-598.
Karslıoğlu Ö, Ustaömer T, Robertson AHF, Peytcheva I (2012). Age
and provenance of detrital zircons from a sandstone turbidite
of the Triassic-Early Jurassic Küre Complex, Central Pontides.
In: Abstracts of the International Earth Science Colloquium
on the Aegean Region, p. 57.
Kaygusuz A, Arslan M, Siebel W, Sipahi F, İlbeyli N (2012).
Geochronological evidence and tectonic significance of
Carboniferous magmatism in the southwest Trabzon area,
eastern Pontides, Turkey. Int Geol Rev 54: 1776-1800.
Kaygusuz A, Arslan M, Sipahi F, Temizel İ (2016). U–Pb zircon
chronology and petrogenesis of Carboniferous plutons in the
northern part of the Eastern Pontides, NE Turkey: constraints
for Paleozoic magmatism and geodynamic evolution.
Gondwana Res 39: 327-346.
Koch R, Bucur II, Kırmacı MZ, Eren M, Taslı K (2008). Upper
Jurassic and Lower Cretaceous carbonate rocks of the Berdiga
Limestone–Sedimentation on an onbound platform with
volcanic and episodic siliciclastic influx. Biostratigraphy, facies
and diagenesis (Kircaova, Kale-Gümüşhane area; NE-Turkey).
Neues Jahrb Geol P-A 247: 23-61.
Linnemann U, Ouzegane K, Drareni A, Hofmann M, Becker S,
Gärtner A, Sagawe A (2011). Sands of West Gondwana: An
archive of secular magmatism and plate interactions–A case
study from the Cambro–Ordovician section of the Tassili Ouan
Ahaggar (Algerian Sahara) using U–Pb-LA–ICP-MS detrital
zircon ages. Lithos 123: 188-203.
Ludwig KR (2012). User’s Manual for Isoplot 3.75: A Geochronological
Toolkit for Microsoft Excel. Berkeley, CA, USA: Berkeley
Geochronology Center.
McCann T, Chalot-Prat F, Saintot A (2010). The Early Mesozoic
evolution of the Western Greater Caucasus (Russia): Triassic-
Jurassic sedimentary and magmatic history. Geol Soc Spec Publ
340: 181-238.
Meijers MJM, Vrouwe B, Van Hinsbergen DJJ, Kuiper KF, Wijbrans
J, Davies GR, Stephenson RA, Kaymakçı N, Matenco L,
Saintot A (2010). Jurassic arc volcanism on Crimea (Ukraine):
implications for the paleo-subduction zone configuration of the
Black Sea region. Lithos 119: 412-426.
Mengel K, Borsuk AM, Gurbanov AG, Wedepohl KH, Baumann A,
Hoefs J (1987). Origin of spilitic rocks from the southern slope
of the Greater Caucasus. Lithos 20: 115-133.
Natal’in BA, Şengör AMC (2005). Late Palaeozoic to Triassic
evolution of the Turan and Scythian platforms: The pre-history
of the Palaeo-Tethyan closure. Tectonophysics 404: 175-202.
Nzegge OM (2008). Petrogenesis and geochronology of the Deliklitaş,
Sivrikaya and Devrekani granitoids and basement, Kastamonu
belt–Central Pontides (NW Turkey): Evidence for Late
Palaeozoic-Mesozoic plutonism and geodynamic interpretation.
PhD, University of Tübingen, Tübingen, Germany.
Nzegge OM, Satır M, Siebel W, Taubald H (2006). Geochemical
and isotopic constraints on the genesis of the Late Palaeozoic
Deliktaş¸ and Sivrikaya granites from the Kastamonu granitoid
belt (Central Pontides, Turkey). Neues JB Miner Abh 183: 27-
40.
Okay AI (1996). Granulite facies gneisses from the Pulur region,
Eastern Pontides. Turk J Earth Sci 5: 55-61.
Okay AI, Altıner D, Sunal G, Aygül M, Akdoğan R, Altıner S, Simmons
M (2017). Geological evolution of the Central Pontides. Geol
Soc Spec Publ (in press).
Okay AI, Göncüoğlu MC (2004). Karakaya Complex: a review of
data and concepts. Turk J Earth Sci 13: 77-95.
Okay AI, Gürsel S, Sherlock S, Altıner D, Tüysüz O, Kylander-Clark
ARC, Aygül M (2013). Early Cretaceous sedimentation and
orogeny on the active margin of Eurasia; Southern Central
Pontides, Turkey. Tectonics 32: 1247-1271.
Okay AI, Gürsel S, Tüysüz O, Sherlock S, Keskin M, Kylander-Clark
ARC (2014). Low-pressure - high-temperature metamorphism
during extension in a Jurassic magmatic arc, Central Pontides,
Turkey. J Metamorph Geol 32: 49-69.
Okay AI, Leven EJ (1996). Stratigraphy and paleontology of the
Upper Paleozoic sequences in the Pulur (Bayburt) region,
Eastern Pontides. Turk J Earth Sci 5: 145-155.
Okay AI, Monié P (1997). Early Mesozoic subduction in the
Eastern Mediterranean: Evidence from Triassic eclogite in the
northwest Turkey. Geology 25: 595-598.
Okay AI, Monod O, Monié P (2002). Triassic blueschists and
eclogites from northwest Turkey: vestiges of the Paleo-Tethyan
subduction. Lithos 64: 155-178.
Okay AI, Nikishin AM (2015). Tectonic evolution of the southern
margin of Laurasia in the Black Sea region. Int Geol Rev 57:
1051-1076.
Okay AI, Şahintürk Ö (1997). Geology of the Eastern Pontides. In:
Robinson AG, editor. Regional and Petroleum Geology of the
Black Sea and Surrounding Region. AAPG Memoir 68. Tulsa,
OK, USA: AAPG, pp. 291-311.
Okay AI, Satır M, Maluski H, Siyako M, Monié P, Metzger R,
Akyüz S (1996). Paleo- and Neo-Tethyan events in northwest
Turkey: geological and geochronological constraints. In: Yin
A, Harrison M, editors. Tectonics of Asia. Cambridge, UK:
Cambridge University Press, pp. 420-441.
Okay AI, Satır M, Siebel W (2006a). Pre-Alpide orogenic events
in the Eastern Mediterranean region, European Lithosphere
Dynamics. Geol Soc Mem 32: 389-405.
Okay AI, Tüysüz O (1999). Tethyan sutures of northern Turkey. Geol
Soc Spec Publ 156: 475-515.
Okay AI, Tüysüz O, Satır M, Özkan-Altıner S, Altıner D, Sherlock
S, Eren RH (2006b). Cretaceous and Triassic subductionaccretion,
high-pressure-low-temperature metamorphism,
and continental growth in the Central Pontides, Turkey. Geol
Soc Am Bull 118: 1247-1269.
Pelin S (1977). Alucra (Giresun) Güneydogu Yöresinin Petrol
Olanaklarl Bakımından Jeolojik İncelenmesi. Trabzon, Turkey:
Karadeniz Technical University (in Turkish).
Robertson AHF, Dixon JE (1984). Introduction: aspects of the
geological evolution of the Eastern Mediterranean. Geol Soc
Spec Publ 17: 1-74.
Robinson AG, Banks CJ, Rutherford MM, Hirst JPP (1995).
Stratigraphic and structural development of the Eastern
Pontides, Turkey. J Geol Soc 152: 861-872.
Rubatto D (2002). Zircon trace element geochemistry: partitioning
with garnet and the link between U–Pb ages and
metamorphism. Chem Geol 184: 123-138.
Şen C (2007). Jurassic volcanism in the Eastern Pontides: Is it rift
related or subduction related? Turk J Earth Sci 16: 523-539.
Şengör AMC (1984). The Cimmeride orogenic system and the
tectonics of Eurasia. Geol Soc Am Spec Publ 195: 1-74.
Sircombe KN (2004). AgeDisplay: an EXCEL workbook to evaluate
and display univariate geochronological data using binned
frequency histograms and probability density distributions.
Comput Geosci 30: 21-31.
Sláma J, Košler J, Condon DJ, Crowley JL, Gerdes A, Hanchar JM,
Horstwood MSA, Morris GA, Nasdala L, Norberg N et al.
(2008). Plešovice zircon - A new natural reference material for
U-Pb and Hf isotopic microanalysis. Chem Geol 249: 1-35.
Stampfli GM, Borel GD (2002). A plate tectonic model for the
Paleozoic and Mesozoic constrained by dynamic plate
boundaries and restored synthetic oceanic isochrons. Earth
Planet Sci Lett 196: 17-33.
Sunal G (2012). Devonian magmatism in the western Sakarya Zone,
Karacabey Region, NW Turkey. Geodin Acta 25: 183-201.
Tikhomirov PL, Chalot-Prat F, Nazarevich BP (2004). Triassic
volcanism in the Eastern Fore-Caucasus: evolution and
geodynamic interpretation. Tectonophysics 381: 119-142.
Topuz G (2002). Petrology of mafic to ultramafic intrusions from the
Pulur Massif, Eastern Pontides, NE Turkey. In: Proceedings of
the 1st International Symposium of the Faculty of Mines (İTU)
on Earth Sciences and Engineering, İstanbul, p. 129.
Topuz G, Altherr R, Kalt A, Satır M, Werner O, Schwarz WH
(2004). Aluminous granulites from the Pulur complex, NE
Turkey: a case of partial melting, efficient melt extraction and
crystallization. Lithos 72: 183-207.
Topuz G, Altherr R, Schwarz WH, Dokuz A, Meyer HP (2007).
Variscan amphibolite facies metamorphic rocks from the
Kurtoğlu metamorphic complex (Gümüşhane area, Eastern
Pontides, Turkey). Int J Earth Sci 96: 861-873.
Topuz G, Altherr R, Siebel W, Schwarz WH, Zack T, Hasözbek A,
Barth M, Satır M, Şen C (2010). Carboniferous high-potassium
I-type granitoid magmatism in the Eastern Pontides: the
Gümüşhane pluton (NE Turkey). Lithos 116: 92-110.
Topuz G, Göçmengil G, Rolland Y, Çelik ÖF, Zack T, Schmitt AK
(2013). Jurassic accretionary complex and ophiolite from
northeast Turkey: no evidence for the Cimmerian continental
ribbon. Geology 41: 255-258.
Topuz G, Okay AI, Altherr R, Schwarz WH, Sunal G, Altınkaynak
L (2014). Triassic warm subduction in northeast Turkey:
evidence from the Ağvanis metamorphic rocks. Isl Arc 23:
181-205.
Tüysüz O (1999). Geology of the Cretaceous sedimentary basins of
the Western Pontides. Geol J 34: 75-93.
Ustaömer PA, Ustaömer T, Robertson AHF (2012). Ion probe U-Pb
dating of the central Sakarya basement: a peri-Gondwana
terrane intruded by late lower Carboniferous subduction/
collision-related granitic rocks. Turk J Earth Sci 21: 905-932.
Ustaömer T, Robertson AHF (1993). A Late Palaeozoic-Early
Mesozoic marginal basin along the actives sourthern
continental margin of Eurasia: evidence from the central
Pontides (Turkey) and adjacent regions: Geol J 28: 219-238.
Ustaömer T, Robertson AHF (1994). Late Palaezoic marginal basin
and subduction-accretion: the Palaeotethyan Küre Complex,
Central Pontides, northern Turkey. J Geol Soc London 151:
291-305.
Ustaömer T, Robertson AHF (1997). Tectonic-sedimentary
evolution of the north Tethyan margin in the Central Pontides
of northern Turkey. In: Robinson AG, editor. Regional and
Petroleum Geology of the Black Sea and Surrounding Region.
American Association of Petroleum Geologists Memoir 68.
Tulsa, OK, USA: AAPG, pp. 255-290.
Ustaömer T, Robertson AHF, Ustaömer PA, Gerdes A, Peytcheva I
(2013). Constraints on Variscan and Cimmerian magmatism
and metamorphism in the Pontides (Yusufeli–Artvin area), NE
Turkey from U-Pb dating and granite geochemistry. Geol Soc
Spec Publ 372: 49-74.
Ustaömer T, Ustaömer PA, Robertson AHF, Gerdes A (2016).
Implications of U–Pb and Lu–Hf isotopic analysis of detrital
zircons for the depositional age, provenance and tectonic
setting of the Permian–Triassic Palaeotethyan Karakaya
Complex, NW Turkey. Int J Earth Sci 105: 7-38.
Vermeesch P (2012). On the visualisation of detrital age distributions.
Chemical Geol 312: 190-194.
Vörös A, Kandemir R (2011). A new Early Jurassic brachiopod fauna
from the Eastern Pontides (Turkey). Neues Jahrb Geol P-A 260:
343-363.
Wedding H (1963). Beiträge zur Geologie der Kelkitlinie und zur
Stratigraphie des Jura im Gebiet Kelkit-Bayburt (Gümüşhane).
Bulletin of the Mineral Research and Exploration Institute of
Turkey 61: 31-37 (in German).
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. Geostandard Newslett 19: 1-23.
Yılmaz O, Boztuğ D (1986). Kastamonu granitoid belt of northern
Turkey: first arc plutonism product related to the subduction
of the Paleo-Tethys. Geology 14: 179-183.