Crystallization conditions and petrography of eocene volcanic rocks in the Gumusdamla-Erikdibi area (Bayburt, NE Turkey)
Keywords:
Mineralogy-petrography, clinopyroxene, geothermobarometer, eocene volcanics, Bayburt, Eastern Pontides
Abstract
The Eocene Gumusdamla-Erikdibi (Bayburt) volcanics in the south zone of the Eastern Pontides were studied as mineral chemistry and petrography. The main units in the study area are Late Cretaceous Ardic Volcanites, Eocene Sirataslar Formation, Eocene Yazyurdu Formation and Eocene Tasliburun Diorite that cuts these units. The youngest unit in the field is Quaternary alluviums. The studied volcanic rocks are basalt, basaltic andesite and andesite in composition and the main minerals are plagioclase, alkali-feldspar, pyroxene, hornblende, biotite and opaque minerals. Pyroxenes are clino-pyroxene in composition (Wo40-48En39-46Fs9-19) and differ from diopside to augite. Crystallization temperatures calculated from clinopyroxene minerals are 819 °C to 1157 °C, and pressure values are 0.14 to 7.79 kbar. Based on the obtained data, it is suggested that the magmas had undergone anhydrous and hydrous crystallizations in the shallow to mid-crustal magma chambers
References
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[11] Topuz, G., Altherr, R., Wolfgang, S., Schwarz, W.H., Zack, T., Hasanözbek, A., Mathias, B,. Satır, M., Şen, C. Carboniferous high-potassium I-type granitoid magmatism in the Eastern Pontides: The Gümüşhane Pluton (NE Turkey). Lithos 2010; 116: 92-110.
[12] Dokuz, A. 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. Godwana Research 2011; 19: 926-944.
[13] Ustaömer, T., Robertson, A.H.F., Ustaömer, P.A., Gerdes, A., Peytcheva, I. 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 of London Special Publications 2013; 372: 49-74.
[14] Kaygusuz, A., Arslan, M., Sipahi, F., Temizel, Ä°. 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 2016; 39: 327-346.
[15] Vural, A., Kaygusuz, A. Petrology of the paleozoic plutons in Eastern pontides: artabel pluton (Gümüşhane, NE Turkey). Journal of Engineering Research and Applied Science 2019; 8 (2): 1216-1228.
[16] Kaygusuz, A., Geochronological age relationships of Carboniferous Plutons in the Eastern Pontides (NE Turkey). Journal of Engineering Research and Applied Science 2020; 9 (1); 1299-1307.
[17] Kandemir, R., Yılmaz, C. 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. Journal of Asian Earth Sciences 2009; 34: 586-598.
[18] Saydam Eker, Ç., Sipahi, F., Kaygusuz, A. Trace and rare earth elements as indicators of provenance and depositional environments of Lias cherts in Gumushane, NE Turkey. Chemie der Erde Geochemistry 2012; 72: 167-177.
[19] Dokuz, A., Karslı, O., Chen, B., Uysal, İ. 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 2010: 480: 259-279.
[20] Eyuboğlu, Y., Dudás, F.Ö., Santosh, M., Zhu, D.C., Yi, K., Chatterjee, N., Jeong, Y.J., Akaryalı, E., Liu, Z. Cenozoic forearc gabbros from the northern zone of the Eastern Pontides Orogenic Belt, NE Turkey: implications for slab window magmatism and convergent margin tectonics. Gondwana Research 2016; 33: 160-189.
[21] Pelin, S. Alucra (Giresun) Güneydoğu yöresinin petrol olanakları bakımından jeolojik incelemesi. KTÜ Yayını 1977; 87: 103 p., Trabzon.
[22] Karslı, O., Dokuz, A., Uysal, İ., Aydın, F., Kandemir, R., Wijbrans, J.R. Generation of the Early Cenozoic adakitic volcanism by partial melting of mafic lower crust, eastern Turkey: Implication for crustal thickening to delamination. Lithos 2010; 114: 109-120.
[23] 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.
[24] Kaygusuz, A., Arslan, M., Temizel, İ., Yücel, C., Aydınçakır, E. U–Pb zircon chronology and petrogenesis of the Late Cretaceous I-type granitoids in arc setting, Eastern Pontides, NE Turkey, Journal of African Earth Sciences 2020. https://doi.org/10.1016/j.jafrearsci.2020.104040.
[25] Kaygusuz, A., Aydınçakır, E. Petrogenesis of a Late Cretaceous composite pluton from the eastern Pontides: the Dağbaşı pluton, NE Turkey. Neues Jahrbuch Für Mineralogie 2011; 188/3: 211-233.
[26] Özdamar, Ş. Geochemistry and geochronology of Late Mesozoic volcanic rocks in the northern part of the Eastern Pontide Orogenic Belt (NE Turkey): implications for the closure of the NeoTethys Ocean. Lithos 2016; 248-251: 240-256.
[27] Temizel, İ., Arslan, M., Yücel, C., Abdioğlu Yazar, E., Kaygusuz, A., Aslan, Z. U-Pb geochronology, bulk-rock geochemistry and petrology of Late Cretaceous syenitic plutons in the Gölköy (Ordu) area (NE Turkey): Implications for magma generation in a continental arc extension triggered by slab roll-back. Journal of Asian Earth Sciences 2019; 171: 305-320.
[28] EyuboÄŸlu, Y., Santosh, M., BektaÅŸ, O., Ayhan, S. Arc magmatism as a window to plate kinematics and subduction polarity: example from the Eastern Pontides belt, NE Turkey. Geoscience Frontiers 2011; 2 (1): 49-56.
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Published
2020-12-31
How to Cite
Kaygusuz, A., & Selvi, D. (2020). Crystallization conditions and petrography of eocene volcanic rocks in the Gumusdamla-Erikdibi area (Bayburt, NE Turkey). Journal of Engineering Research and Applied Science, 9(2), 1529-1537. Retrieved from http://www.journaleras.com/index.php/jeras/article/view/217
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