Geochronological age relationships of Carboniferous Plutons in the Eastern Pontides (NE Turkey)
Keywords:
Carboniferous, plutonic rocks, geochronology, eastern pontides
Abstract
Many plutonic rocks of varying age, size and composition exist in the Paleozoic to Cenozoic times in the Eastern Pontides. Especially Carboniferous aged plutons are observed in the larger masses and more commonly in the southern part, while they are seen in the smaller bodies and a lesser extent in the northern part of the Eastern Pontides. Carboniferous plutons are generally granite and granodiorite in composition and vary in size from 1 to 400 km2. They exhibit low to high-K calc-alkaline and metaluminous to slightly peraluminous characters. The rocks show a wide range of variations in 87Sr/86Sr(i) (0.69454 to 0.71057) and a narrow variation in εNd(i) (−0.1 to −8.0) values. Carboniferous plutons in the Eastern Pontides, at least those with precise radiometric age data available, formed between 348 to 298 Ma. These rocks represent a late stage of Hercynian magmatism in the northern and southern part of the Eastern Pontides. Compared with Eocene and Late Cretaceous plutons in the Eastern Pontides, Carboniferous plutons has very coarse texture, lesser amount of mafic magmatic enclaves (MMEs) and mafic minerals, higher ratios of 87Sr/86Sr(i) and lower values of eNd(i).
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[14] Kaygusuz, A., Siebel, W., Şen, C., Satır, M. Petrochemistry and petrology of I-type granitoids in an arc setting: the composite Torul Pluton, Eastern Pontides, NE Turkey, International Journal of Earth Sciences 2008; 97: 739–764.
[15] Kaygusuz, A., Chen, B., Aslan, Z., Siebel, W., Şen, C. U-Pb SHRIMP zircon ages, geochemical and Sr–Nd isotopic compositions of the Late Cretaceous I-type Sarıosman pluton, Eastern Pontides, NE Turkey, Turkish Journal of Earth Sciences 2009; 18: 549–581.
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[18] Boztuğ, D., Jonckheere, R.C, Wagner, G.A., Yeğingil, Z. Slow Senonian and fast Paleocene-early Eocene uplift of the granitoids in the Central Eastern Pontides, Turkey: Apatite fission-track results, Tectonophysics 2004; 382: 3/4, 213–228.
[19] Topuz, G., Alther, R., Schwarz, W.H., Siebel, W., Satır, M., Dokuz, A. Post-collisional plutonism with adakite-like signatures: the Eocene Saraycık Granodiorite (Eastern Pontides, Turkey), Contributions to Mineralogy and Petrology 2005; 150: 441–455.
[20] Arslan, M., Aslan, Z. Mineralogy, petrography and whole-rock geochemistry of the Cenozoic granitic intrusions in the Eastern Pontides (Turkey), Journal of Asian Earth Sciences 2006; 27: 177–193.
[21] Karslı, O., Chen, B., Aydın, F., Şen, C. Geochemical and Sr-Nd-Pb isotopic compositions of the Eocene Dölek and Sarıçiçek plutons, Eastern Turkey: Implications for magma interaction in the genesis of high-K calc-alkaline granitoids in a post-collision extensional setting, Lithos 2007; 98: 67–96.
[22] Kaygusuz, A., Öztürk, M. Geochronology, geochemistry, and petrogenesis of the Eocene Bayburt intrusions, Eastern Pontide, NE Turkey: implications for lithospheric mantle and lower crustal sources in the high-K calc-alkaline magmatism, Journal of Asian Earth Sciences 2015; 108: 97–116.
[23] Eyuboğlu, Y., Dudas, F.O., Thorkelson, D., Zhu, D.C., Liu, Z., Chatterjee, N., Yi, K., Santosh, M. Eocene granitoids of northern Turkey: Polybaric magmatism in an evolving arc–slab window system, Gondwana Research 2017; 50: 311–345.
[24] Temizel, İ., Abdioğlu Yazar, E., Arslan, M., Kaygusuz, A., Aslan, Z. Mineral chemistry, whole-rock geochemistry and petrology of Eocene I-type Shoshonitic plutons in the Gölköy area (Ordu, NE Turkey), Bulletin of the Mineral Research and Exploration 2018; 157: 121-152.
[25] Okay, A.İ., Tüysüz, O. Tethyan sutures of northern Turkey. Journal of Geological Society of London Special Publication 1999; 156: 475–515.
[26] Güven, İ.H. Doğu Pontidler’in 1/ 250 000 ölçekli kompilasyonu, MTA Genel Müdürlüğü 1993, Ankara.
[27] Özsayar, T., Pelin, S., Gedikoğlu, A. Doğu Pontidler’de Kretase, KTÜ Yerbilimleri Dergisi 1981; 2: 65–114.
[28] Okay, A., Şahintürk, Ö. Geology of the eastern Pontides. In: Robinson AG (Ed.) Regional and petroleum geology of the Black Sea and surrounding region: American Association of Petroleum Geologists (AAPG) Memoir 1997; 68: 291–311.
[29] Topuz, G., Altherr, R., Kalt, A., Satır, M., Werner, O., Schwarz, W.H. Aluminous granulites from the Pulur complex, NE Turkey: a case of partial melting, efficient melt extraction and crystallization, Lithos 2004; 72: 183–207.
[30] Karslı O. Dokuz A., Kandemir R. 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 2016; 266: 98–114.
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Published
2020-07-04
How to Cite
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. Retrieved from http://journaleras.com/index.php/jeras/article/view/189
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