Yerbilimleri 1301-2894 2687-2978 Hacettepe Üniversitesi 10.17824/yerbilimleri.889227 Engineering Mühendislik Karbonifer Pamuktaş Plütonu’nun petrografisi, jeokimyası ve petrolojik özellikleri, Bayburt (KD Türkiye) Petrography, geochemistry and petrological characteristics of the Carboniferous Pamuktaş Pluton, Bayburt (NE Turkey) https://orcid.org/0000-0002-9075-3350 Gücer Mehmet Ali Gümüşhane Üniversitesi https://orcid.org/0000-0003-1079-9226 Sarı Ekrem Yıldız Bakır Madencilik Sanayi A.Ş. Gümüşhane 04 22 2021 42 1 85 120 03 01 2021 04 09 2021 Copyright © 1976, Yerbilimleri 1976 Yerbilimleri

Doğu Pontidler (KD Türkiye), Anadolu Levhasının jeolojik olarak şekillenmesindeönemli bir rol oynayan Alp-Himalaya orojenezinin etkisi ile oluşmuş olup farklı türdemagmatik kayaları içermesi bakımından önemli bir alan konumundadır. ÖzellikleKarbonifer plütonlar, doğu Pontidlerin güney kesiminde, daha geniş mostralar halindeve daha yaygın olarak gözlenmektedir. Bu çalışma, Bayburt’un (KD Türkiye)Pamuktaş Köyü ve çevresinde yer alan granitik kayaçlar üzerinde yeni petrografik vetüm kayaç jeokimyası verileri sunmaktadır. Ayrıca, bu kayaçların oluşumunda hâkimolan kaynak bölge, petrolojik süreçler ve jeodinamik ortam tartışılmaktadır. Yaklaşık 5km2’lik bir alanı kapsayan Karbonifer Pamuktaş Plütonu, çalışma alanında Juraöncesi temeli temsil etmekte ve uyumsuz olarak Alt-Orta Jura volkanoklastik vevolkanik kayaçlar ile Üst Jura-Alt Kretase kireçtaşları tarafından örtülmektedir.Pamuktaş Plütonu esas olarak granit/granit porfir ve aplit (mikrogranit), daha azoranda ise granodiyorit ve kuvars mikrodiyorit türü kayaçlardan meydanagelmektedir. Granitik kayaçlar, özşekilli ve özşekilsiz granüler/mikrogranüler dokuya sahip olupbaşlıca alkali feldispat (ortoklas), plajiyoklas, kuvars, biyotit ve amfibol (hornblend)minerallerinden oluşur. Kayaçlar yüksek SiO2 içeriklerine (%65.62-75.09) ve yüksekK’lu kalk-alkaliden şoşonitiğe kadar uzanan bir afiniteye sahip olup I-tipi bir kaynaktanitibaren türemiştir. Granitik kayaçlar peralümin karakterli olup çarpışma sonrasıvolkanik yay granitoyidleri ile benzerlik göstermektedir. Ana ve iz element trendleri,kayaçların oluşumunda plajiyoklas, hornblend, apatit ve Fe-Ti oksit mineralfraksiyonlaşmasının önemli rol oynadığını göstermektedir. Pamuktaş Plütonu’nunpetrolojik özelliklerine göre, granitlerin gelişiminde fraksiyonel kristallenme, magmakarışımı ve daha az oranda asimilasyon ve kısmi ergime işlemlerinin rol oynadığıortaya konmuştur. Hesaplanan zirkon doygunluk sıcaklıkları (730-844°C) düşük ilkselmagma sıcaklıklarını yansıtmaktadır. Elde edilen tüm veriler Karbonifer PamuktaşPlütonu’nun ana magmasının orta-alt kıtasal kabuk ve zenginleşmiş litosferik mantoergiyiklerinden kısmi ergime sonucu türediğini ve kıtasal magma odasındafarklılaşarak yerleştiğini göstermektedir.

The Eastern Pontides (NE Turkey) that formed during the Alpine-Himalayan orogenyin which geologically plays an important role in the formation of Anatolian Plate, is asignificant area in term of containing different igneous rocks. EspeciallyCarboniferous plutons are widely observed in the southern part of the EasternPontides in larger outcrops and more commonly. This study presents newpetrography and whole-rock geochemistry data on granitic rocks in the Pamuktaşarea of Bayburt (NE Turkey). In addition, the source region of the magma,petrological processes and geodynamic setting prevailing in the formation of thesegranitic rocks are discussed. The Carboniferous Pamuktaş Pluton, which includes anarea of approximately 5 km2, represents the pre-Jurassic basement in the study areaand is unconformably overlain by Lower-Middle Jurassic volcanoclastic and volcanicrocks and Upper Jurassic-Lower Cretaceous limestones. Pamuktaş Pluton mainlyconsists of granite/granite porphyry and aplite (microgranite), to a lesser extent granodiorite and quartz microdiorite rocks. Granitic rocks mainly consist of alkalifeldspar (orthoclase), plagioclase feldspar, quartz, biotite, and amphibole(hornblende) minerals, as having euhedral and anhedral granular/microgranulartextures. The rocks have high SiO2 contents (65.62-75.09 wt.%) and a high K calcalkali to shoshonitic affinities, and have been derived from an I-type source. Thegranitic rocks are peralumine in character and are similar to post-collisional volcanicarc granitoids. Major and trace element trends show that the plagioclase, hornblende,apatite, and Fe-Ti oxide mineral fractionations play an important role in the formationof rocks. According to the petrological properties of the Pamuktaş Pluton, it has beenrevealed that the fractional crystallization, magma mixing, and less assimilation andpartial melting processes play a role in the development of granites. The calculatedzircon saturation temperatures (730-844°C) reflect lower initial magma temperatures.All obtained data suggest that the parental magma of the Carboniferous PamuktaşPluton has evolved from the mixing of lithospheric mantle and middle-lower crustderived melts as a result of partial melting, differentiated and emplaced in thecontinental magma chamber.

 Pamuktaş (Bayburt) granitoyid Doğu Pontidler jeokimya petroloji magmatizma Pamuktaş (Bayburt) granitoid Eastern Pontides geochemistry petrology magmatism Gümüşhane Üniversitesi Bilimsel Araştırma Projeleri (GÜBAP) Koordinatörlüğü 20.E3102.07.01 Ackerman, L., Krňanská, M., Siebel, W. and Strnad, L. 2010. Geochemistry of the Drahotín and Mutěnín intrusions, West Bohemian shear zone, Bohemian massif: contrasting evolution of mantle-derived melts. Mineralogy and Petrology, 99, 185-199. Ağar, Ü., 1977. Demirözü (Bayburt) ve Köse (Kelkit) Bölgesinin Jeolojisi. Doktora tezi, İ.Ü., Fen Fakültesi, İstanbul, 56. Akın, H. 1979. Geologie Magmatismus und Lagerstaettenbildung im ostpontischen GebirgeTürkei aus der Sicht der Plattentektonik. Geologische Rundschau, 68, 253-283. Akıncı, Ö.T., 1984. The Eastern Pontide volcano-sedimentary belt and associated massive sulphide deposits. In: J.E. Dixon and A.H.F. Robertson (eds.), The Geological Evolution of the Eastern Mediterranean. Geological Society, London, Special Publications, 17, 415-428. Arslan, M., Tüysüz, N., Korkmaz, S., and Kurt, H., 1997. Geochemistry and Petrogenesis of the Eastern Pontide Volcanic Rocks, Northeast Turkey. Chemie der Erde Geochemistry, 57, 157-187. Aydın, F., 2014. Geochronology, Geochemistry and Petrogenesis of the Maçka Subvolcanic Intrusions: Implications for the late Cretaceous Magmatic and Geodynamic Evolution of the Eastern Part of the Sakarya Zone, Northeastern Turkey. International Geology Review, 56 (10), 1246-1275. Aydınçakır, E., 2016. Subduction-related Late Cretaceous high-K volcanism in the Central Pontides orogenic belt: Constraints on geodynamic implications. Geodinamica Acta, 28 (4), 379-411. Aydınçakır, E., Gündüz, R. and Yücel, C., 2020. Emplacement conditions of magma(s) forming Jurassic plutonic rocks in Gümüşhane (Eastern Pontides, Turkey). Bulletin of the Mineral Research and Exploration, 162, 175-196. Aydınçakır, E. and Şen, C., 2013. Petrogenesis of the post-collisional volcanic rocks from the Borçka (Artvin) area: Implications for the evolution of the Eocene magmatism in the Eastern Pontides (NE Turkey). Lithos, 172-173, 98-117. Bacon, C.R. and Druitt, T.H., 1988. Compositional Evolution of the Zoned Calc-Alkaline Magma Chamber of Mount Mazama, Crater Lake, Oregon. Contribution to Mineralogy and Petrology, 98, 224-256. Barbarin, B., 1999. A reviewof the relationships between granitoid types, their origins and their geodynamic environments. Lithos, 46, 605-626. Batchelor, R. A. and Bowden, P., 1985. Petrogenetic interpretation of granitoid rocks series using multicationic parameters. Chemical Geology, 48, 43-55. Bektaş, O. and Gedik, İ. 1988. A new formation with leucite-bearing shoshonitic volcanism in the Kop area (Everekhanları Formation) and its relationship with the evolution of the eastern Pontide arc, NE, Turkey. Geological Society of Turkey Bulletin, 31, 11-19. Bergougnan, H., 1987. Etudes géologiques dans l’Est-anatolien: Mem. des Sci. De la Terre. Université Pierre et Marie Curie, Paris, p. 606 (Thèse de Doctorat d’Etat). Boehnke, P., Watson, E.B., Trail, D., Harrison, T.M. and Schmitt, A.K., 2013. Zircon saturation re-revisited. Chemical Geology, 351, 324-334. Boynton, W.V., 1984. Cosmochemistry of the Rare Earth Elements; Meteorite Studies. In: Rare Earth Element Geochemistry. Henderson, P. (Eds), Elsevier Sci. Publ. Co., Amsterdam. 63-114. Boztuğ, D., Erçin, A.İ., Kuruçelik, M.K., Göç, D., Kömür, İ. and İskenderoğlu, A., 2006. Geochemical characteristics of the composite Kaçkar batholith generated in a Neo-Tethyan convergence system, Eastem Pontides, Turkey. Journal of Asian Earth Sciences, 27, 286-302. Chen, B., Jahn, B.M. and Zhai, M.G., 2003. Sr-Nd Isotopic Characteristics of the Mesozoic Magmatism in the Taihang-Yanshan Orogen, North China Craton, and Implications for Archean Lithosphere Thinning. Journal of the Geological Society London, 160, 963-970. Çoğulu, E.,1975. Gümüşhane ve Rize Granitik Plütonlarının Mukayeseli Petrolojik ve Jeokronometrik Etüdü. Doçentlik Tezi, İTÜ Maden Mühendisliği, 186s. İstanbul. Dokuz, A., Aydınçakır, E., Kandemir, R., Karslı, O., Siebel, W., Derman, A.S. and Turan, M., 2017. Late Jurassic Magmatism and Stratigraphy in the Eastern Sakarya Zone, Turkey: Evidence for the Slab Breakoff of Paleotethyan Oceanic Lithosphere. The Journal of Geology, 125(1), 1-31. Dokuz, A. and Tanyolu, E., 2006. Gechemical Constraints on the Provenance, Mineral Sorting and Subaerial Weathering of Lower Jurassic and Upper Cretaceous Clastic Rocks from the Eastern Pontides, Yusufeli (Arvin), NE Turkey. Turkish Journal of Earth Sciences, 15, 181-209. 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 Research, 19, 926-944. Dokuz, A., Tanyolu, E. and Genç, S., 2006. A mantle- and a lower crust-derived bimodal suite in the Yusufeli (Artvin) area, NE Turkey: trace element and REE evidence for subduction-related rift origin of Early Jurassic Demirkent intrusive complex. International Journal of Earth Sciences, 95, 370-394. Eby, G.N. 1992. Chemical subdivision of the A-type granitoids: petrogenetic and tectonic implications. Geology, 20, 641-644. Eyüboğlu, Y., 2010. Late Cretaceous high-K volcanism in the eastern Pontide orogenic belt, and its implications for the geodynamic evolution of NE Turkey. International Geology Review, 52 (2/3), 142-186. Göncüoğlu, M.C., 2010. Türkiye Jeolojisine Giriş: Alpin ve Alpin Öncesi Tektonik Birliklerin Jeodinamik Evrimi. MTA Genel Müdürlüğü, Monografi Serisi No: 5, 69 s., Ankara. Green, T.H., 1995. Significance of Nb/Ta as an indicator of geochemical processes in the crust-mantle system. Chemical Geology, 120, 347-359. Grove, T.L. and Donnelly-Nolan, J.M., 1986. The Evolution of Young Silicic Lavas at Medicine Lake Volcano, California: Implications for the Origin of Compositional Gaps in Calc-Alkaline Series Lavas. Contributions to Mineralogy and Petrology, 92, 281-302. Gülmez, F. ve Genç, S.C., 2015. Amasya Civarı Geç Kretase Yaşlı Ultrapotasik Volkaniklerinde Farklılaşma Süreçleri. Maden Teknik Arama Dergisi, 151, 153-172. Güven, İ.H., 1993. Doğu Karadeniz Bölgesi’nin 1/25.000 ölçekli jeolojisi ve komplikasyonu. MTA, Ankara. Harris, N.B.W., Pearce, J.A. and Tindle, A.G. 1986. Geochemical characteristics of collision- zone magmatism. In: Coward M.P, Ries A.C. (eds.), Collision Tectonics. Geological Society of London Special Publication, 19, 67-81. Hibbard, M.J., 1991. Textural anatomy of twelve magma mixed granitoid systems, in: Didier, J. and Barbarin, B. (Eds.), Enclaves and Granite Petrology, Developments in Petrology, 13, Elsevier, 431-444. Hibbard, M.J., 1995. Petrography to Petrogenesis: Prentice Hall, New Jersey, 587 pp. Hoffman, A. W., 1988. Chemical differentiation of the Earth. The relationship between mantle, continental crust and oceanic crust. Earth and Planetary Science Letters, 90, 297-314. Irvine, T.N. and Baragar, W.R.A., 1971. A guide to chemical classification of the common volcanic rocks. Canadian Journal of Earth Sciences, 8, 523-548. Janoušek, V., Farrow, C.M. and Erban, V., 2006. Interpretation of whole-rock geochemical data in igneous geochemistry: introducing Geochemical Data Toolkit (GCDkit). Journal of Petrology, 47(6), 1255-1259. Kandemir, R., and Yılmaz, C., 2009. Lithostratigraphy, facies and deposition environment of the Lower Jurassic Ammonitico Rosso Type Sediments (ARTS) in the Gumushane area, NE Turkey: Implications for the opening of the northern branch of the Neo-Tethys Ocean. Journal of Asian Earth Sciences, 34, 586-598. Karslı, O., Aydin, F., Uysal, I., Dokuz, A., Kumral, M., Kandemir, R., Budakoglu, M. and Ketenci, M., 2018. Latest Cretaceous “A2-type” granites in the Sakarya Zone, NE Turkey: Partial melting of mafic lower crust in response to roll-back of Neo-Tethyan oceanic lithosphere. Lithos, 302-303, 312-328. Karslı, O., Chen, B., Aydın, F. and Şen, C., 2007. Geochemical and Sr-Nd-Pb isotopic compositions of the Eocene Dölek and Sariçiçek Plutons, Eastern Turkey: Implications for magma interaction in the genesis of high-K calc-alkaline granitoids in a post-collision extensional setting. Lithos, 98, 67-96. Karslı, O., Dokuz, A. and Kandemir, R., 2016. Subduction-related Late Carboniferous to Early Permian Magmatism in the Eastern Pontides, the Camlik and Casurluk plutons: Insights from geochemistry, whole-rock Sr-Nd and in situ zircon Lu-Hf isotopes, and U-Pb geochronology. Lithos, 266, 98-114. Karslı, O., Dokuz, A. and Kandemir, R., 2017. Zircon Lu-Hf isotope systematics and U–Pb geochronology, whole-rock Sr-Nd isotopes and geochemistry of the early Jurassic Gokcedere pluton, Sakarya Zone-NE Turkey: a magmatic response to roll-back of the Paleo-Tethyan oceanic lithosphere. Contributions to Mineralogy and Petrology, 172, 31. Karslı, O., Dokuz, A., Kaliwoda, M., Uysal, İ., Aydın, F., Kandemir, R. and Fehr, K-T., 2014. Geochemical fingerprints of Late Triassic calc-alkaline lamprophyres from the Eastern Pontides, NE Turkey: A key to understanding lamprophyre formation in a subduction-related environment. Lithos, 196-197, 181-197. Kaygusuz, A. and Aydınçakır, E., 2009. Mineralogy, whole-rock and Sr–Nd isotope geochemistry of mafic microgranular enclaves in Cretaceous Dagbasi granitoids, Eastern Pontides, NE Turkey: Evidence of magma mixing, mingling and chemical equilibration. Chemie der Erde Geochemistry, 69, 247-277. Kaygusuz, A. and Aydınçakır, E., 2011. U-Pb zircon SHRIMP ages, geochemical and Sr-Nd isotopic compositions of Cretaceous plutons in the eastern Pontides (NE Turkey): The Dağbaşı pluton. Neues Jahrbuch für Mineralogie - Abhandlungen, 188 (3), 211-233. Kaygusuz, A., Arslan, M., Temizel, İ., Yücel, C. and Aydınçakır, E., 2021. U–Pb zircon ages and petrogenesis of the Late Cretaceous I-type granitoids in arc setting, Eastern Pontides, NE Turkey. Journal of African Earth Sciences, 174, 104040. Kaygusuz, A. and Şen, C., 2011. Calc-alkaline I-Type plutons in the Eastern Pontides, NE Turkey: U-Pb zircon ages, geochemical and Sr-Nd isotopic compositions. Chemie der Erde Geochemistry, 71, 59-75. Kaygusuz, A., 2020. Geochronological age relationships of Carboniferous Plutons in the Eastern Pontides (NE Turkey). Journal of Engineering Research and Applied Science, 9(1), 1299-1307. Kaygusuz, A., Arslan, M., Siebel, W., Sipahi, F. and İlbeyli, N., 2012. Geochronological evidence and tectonic significance of Carboniferous magmatism in the southwest Trabzon area, eastern Pontides, Turkey. International Geology Review, 1776–1800. Kaygusuz, A., Arslan, M., Sipahi, F. and 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 Research, 39, 327–346. Kaygusuz, A., Sipahi, F., İlbeyli, N., Arslan. M., Chen, B. and Aydınçakır, E., 2013. Petrogenesis of the Late Cretaceous Turnagöl intrusion in the Eastern Pontides: Implications for magma genesis in the arc setting. Geoscience Frontiers, 4, 423-438. Keskin, İ., Korkmaz, S., Gedik, İ., Ateş, M., Gök, L., Küçümen, Ö. ve Erkal, T., 1989. Bayburt Dolayının Jeolojisi. MTA Rap. No: 8995,129s, Ankara. Li, X.H., Li, W.X., Li, Z.X., Lo, C.H., Wang, J., Ye, M.F. and Yang, Y.H. 2009. Amalgamation between the Yangtze and Cathaysia Blocks in South China: constraints from SHRIMP U–Pb zircon ages, geochemistry and Nd-Hf isotopes of the Shuangxiwu volcanic rocks. Precambrian Research, 174, 117-128. Mahood, G. and Hildreth, W., 1983. Large partition coefficients for trace elements in high-silica rhyolites. Geochimica et Cosmochimica Acta, 47, 11-30. Maia de Hollanda, M.H.B., Pimentel, M.M., Jardim de Sá, E.F., 2003. Paleoproterozoic subduction-related metasomatic signatures in the lithospheric mantle beneath NE Brazil: inferences from trace element and Sr–Nd–Pb isotopic compositions of Neoproterozoic high-K igneous rocks. Journal of South American Earth Sciences, 15, 885-900. Martin, H., 1986. Effect of steeper Archean geothermal gradient on geochemistry of subduction-zone magmas. Geology, 14, 753-756. McLennan, S.M. and Taylor, S.R., 1984. Archean Sedimentary Rocks and Their Relation to the Composition of the Archean Continental Crust, in Kröner, A., et al., (eds)., Archean Geochemistry Berlin, Springer-Verlag, 42-72. McLennan, S.M., 1989. Rare Earth Elements in Sedimentary Rocks: Influence of Provenance and Sedimentary Processes, In: Lipin, B.R., MacKay, G.A. (Eds.), Geochemistry and Mineralogy of Rare Earth Elements. Mineralogical Society of America, 169-200. Middlemost, E.A., 1994. Naming materials in the magma/igneous rock system. Earth-Science Reviews, 37, 215-224. Okay, A.İ. and Şahintürk, Ö., 1997. Geology of the Eastern Pontides, In: Robinson, A.G. (Eds), Regional and petroleum geology of the Black Sea and surrounding region. AAPG Bulletin, 68, 291-311. Okay, A.İ. and Tüysüz, O., 1999. Tethyan Sutures of Northern Turkey. The Mediterranean Basin: Tertiary Extension within the Alpine Orogen. Geological Society, London, Special Publications, 156, 475-515. Okay, A.İ., 2008. Geology of Turkey: A Synopsis. Anschnitt, 21, 19-42. Patiño Douce, A.E., 1999. What do Experiments Tell us About the Relative Contributions of Crust and Mantle to the Origin of Granitic Magmas In: Castro, A., Fernandez, C., Vigneressese, J.L. (Eds.), Understanding Granites: Intergrating New and Classical Techniques. Geological Society of London, Special Publication, 168, 55-75. Pearce, J.A. 1983. The Role of Sub-Continental Lithosphere in Magma Genesis at Destructive Plate Margins. In: Continental Basalts and Mantle Xenoliths, (eds): Hawkesworth, C.J., Norry, M.J., Shiva Publishing, Cheshire, 230-249. Pearce, J.A., Bender, J.F., De Long, S.E., Kidd, W.S.F., Low, P.J., Güner, Y., Şaroğlu, F., Yılmaz, Y., Moorbath, S. and Mitchell, J.J. 1990. Genesis of collision volcanism in eastern Anatolia Turkey. Journal of Volcanology and Geothermal Research, 44, 189-229. Pearce, J.A., Haris, N.B.W. and Tindle, A.G., 1984. Trace element discrimination diagrams for the tectonic interpretation of granitic rocks. Journal of Petrology, 25, 956-983. Peccerillo, A. and Taylor, S. R., 1976. Geochemistry of Eocene calc-alkaline volcanic rocks from the Kastamonu area, Northern Turkey. Contributions to Mineralogy and Petrology 58, 63-81. Pelin, S., 1977. Alucra (Giresun) güneydoğu yöresinin petrol olanakları bakımından jeolojik incelemesi. KTÜ yayını, 87, 103. Roberts, M.P. and Clemens, J.D., 1993. Origin of High-Potassium, Calcalkaline, I-Type Granitoids. Geology, 21, 825-828. Rollinson, H.R., 1993. Using Geochemical Data: Evaluation, Presentation, Interpretation. Johhn Wiley & Sons, New York, 352 p. Rudnick, R.L. and Gao, S., 2004. Composition of The Continental Crust. Treatise on Geochemistry, 3, 1-65. Saydam Eker, Ç., Akpınar, İ. and Sipahi, F., 2016. Organic geochemistry and element distribution in coals formed in Eocene lagoon facies from the Eastern Black Sea Region, NE Turkey. Turkish Journal of Earth Sciences, 25, 467-489. Schandl, E.S. and Gorton, M.P., 2002. Application of High field Strength Elements to Discriminate Tectonic Settings in VMS Environments. Economic Geology, 97, 629-642. Shand, S. J., 1943. Eruptive Rocks. Their Genesis, Composition, Classification, and Their Relation to Ore-Deposits with a Chapter on Meteorite. New York: John Wiley & Sons. Sipahi, F., Gücer, M.A. and Saydam Eker, Ç., 2020a. Geochemical composition of magnetite from different iron skarn mineralizations in NE Turkey: implication for source of ore forming fluids. Arabian Journal of Geosciences, 13(2), 70. Sipahi, F., Gücer, M.A. and Sadıklar, M.B., 2020b. Nature of clays in Late Cretaceous dacitic rocks in the eastern Sakarya Zone (NE Turkey): A geochemical and isotopic approach. Turkish Journal of Earth Sciences, 29(6), 831-852. Sipahi, F., Gücer, M.A. ve Sadıklar, M.B., 2019. Zigana Dağı (Gümüşhane, KD Türkiye) Dayklarının Jeokimyası ve Jeolojik Anlamı. Yerbilimleri, 40 (3), 293-325. Sipahi, F., Kaygusuz, A., Saydam Eker, Ç., Vural, A. and Akpınar, İ., 2018. Late Cretaceous arc igneous activity: the Eğrikar Monzogranite example. International Geology Review, 60 (3), 382-400. Sun, S. and McDonough, W.F., 1989. Chemical and Isotopic Systematics of Oceanic Basalt: Implications for Mantle Composition and Processes, In: A. D. Saunders, ve M.J. Norry, (eds.), Magmatism in the Ocean Basins. Geological Society London Special Publications, 42, 313-345. Şen, C., Aydınçakır, E., Yağcıoğlu, U.C. ve Bak, T., 2019. Sakarya Zonunun Güney Kesiminde Yüzeylenen Geç Kretase Alkalen Volkanitlerinin Jeokimyasal Özelliklerinin Karşılaştırılması. Gümüşhane Üniversitesi Fen Bilimleri Enstitüsü Dergisi, 9(1), 1-15. Şen, C. and Dunn, T., 1994. Dehydration melting of a basaltic composition amphibolites at 1.5 and 2.0 GPa: implications for the origin of adakites. Contribution to Mineralogy and Petrology, 117, 394-409. Şen, C., 2007. Jurassic volcanism in the Eastern Pontides: Is it rift related or subduction related? Turkish Journal of Earth Sciences, 16, 523-539. Şengör, A.M.C. and Yılmaz, Y., 1981. Tethyan evolution of Turkey: a plate tectonic approach. Techtonophysics, 75, 181-241. Taylor, S.R. and McLennan, S.M., 1985. The Continental Crust: Its Composition and Evolution. Blackwell Scientific Publications, Blackwell, Oxford, U.K., 312 p. Thiéblemont, D. and Tégyey, M., 1994. Une discrimination géochimique des roches différenciées témoin de la diversité d’origine et de situation tectonique des magmas calco-alcalins. Comptes Rendus de l’Académie des Sciences, 319, 87-94. Thirlwall, M.F., Smith, T.E., Graham, A.M., Theodorou, N., Hollings, P. and Davidson, J.P., 1994. High Field Strength Element Anomalies in Arc Lavas: Source or Processes. Journal of Petrology, 35, 819-838. Topuz, G., Altherr, R., Kalt, A., Satır, M., Wemer, O. and Schwarz, W.H., 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, W.H., Dokuz, A. and Meyer, H.P., 2007. Variscan amphibolite-facies rocks from the Kurtoğlu metamorphic complex. Gümüşhane area, Eastern Pontides, Turkey. International Journal of Earth Sciences, 96, 861-873. Topuz, G., Altherr, R., Wolfgang, S., Schwarz, W.H., Zack, T., Hasanözbek, A., Mathias, B., Satır, M., and Şen C., 2010. Carboniferous high-potassium I-type granitoid magmatism in the Eastern Pontides: The Gümüşhane pluton (NE Turkey). Lithos, 116, 92-110. Ustaömer, T. and Robertson, H.F.A, 2010. Late Paleozoic-Early Cenozoic development of the Eastern Pontides (Artvin area), Turkey: stages of closure of Tethys along the southern margin of Eurasia. Geological Society, London, Special Publications, 340, 281-327. Ustaömer, T., Robertson, A.H.F., Ustaömer, P.A., Gerdes, A. and 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. In Robertson, A.H.F., Parlak, O., Ünlügenç, U.C. (eds). Geological Development of Anatolia and the Easternmost Mediterranean Region. Geological Society, London. Special Publications, 372, 49-74. Watson, E.B. and Harrison, M., 1983. Zircon saturation revisited: temperature and composition effects in a variety of crustal magma types. Earth and Planetary Science Letters, 64, 295-304. Yang, J.H.., Fu, Y., Wu, F.Y., Wilde, S.A., Xie, L.W., Yang, Y.H. and Liu, X.M., 2007. Tracing Magma Mixing in Granite Genesis: in Situ U-Pb Dating and Hf-Isotope Analysis of Zircons. Contributions to Mineralogy and Petrology, 153, 177-190. Yılmaz, Y., Tüysüz, O., Yiğitbaş, E., Genc, Ş.C. and Şengör, A.M.C., 1997. Geology and tectonics of the Pontides. In: Robinson, A.G. (eds), regional and petroleum geology of the Black Sea and surrounding region. AAPG Memoirs. 68, 183-226. Yücel, C., Arslan, M., Temizel, İ. and Abdioğlu Yazar, E., 2014. Volcanic facies and mineral chemistry of Tertiary volcanics in the northern part of the Eastern Pontides northeast Turkey implications for pre eruptive crystallization conditions and magma chamber processes. Mineralogy and Petrology, 108 (3), 439-467.