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Pasinler (Erzurum) Kuzeyindeki Volkanik Kayaclarin Mineral Kimyasi ve Jeokimyasi

Mineral Chemistry and Geochemistry of Volcanic Rocks in The North of Pasinler (Erzurum)

Journal Name:

  • Pamukkale Üniversitesi Mühendislik Bilimleri Dergisi

Publication Year:

  • 2009

Key Words:

Keywords (Original Language):

Author NameUniversity of AuthorFaculty of Author
Abstract (2. Language): 
In the north of Pasinler (Erzurum), Upper Miocene-Pliocene volcanic rocks crop out. These volcanites are composed of basaltic andesite, andesite, dacite, rhyolite lavas and rhyolitic pyroclastics. The rocks show porphyritic, microlitic porphyritic, hyalo-microlitic porphyritic, vitrophyric, glomeroporphyritic, pilotaxitic and hyalopilitic textures. The investigated volcanites contain plagioclase (An29-80), olivine (Fo65-82), clinopyroxene (augite), orthopyroxene (enstatite), amphibole (Mg#: 0.57-0.71), biotite (phlo-gopite: 0.44-0.47, annite: 0.33-0.37), sanidine, quartz and opaque mineral (titano-magnetite and il-menite). The volcanic rocks are calc-alkaline in character and have medium to high-K contents. Ma¬jor oxide and trace element variations point out open-system magmatic differentiation in the evolution of rocks. Geochemical data indicate an important role of fractionation of phenocryst phases in the rocks during differentiation process. However, it is considered that assimilation±magma mixing might have accompanied to the process. High LILE (K, Rb, Ba, Th) and relatively low HFSE (Nb, Ta, Hf, Zr) contents of the rocks indicate that these rocks derived from parental magmas carrying subduc-tion signature.
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Abstract (Original Language): 
Pasinler (Erzurum) kuzeyinde Ust Miyosen-Pliyosen ya§li volkanik kayaglar yuzeylemektedir. Bu vol-kanitler bazaltik andezit, andezit, dasit, riyolit turu lav ve riyolitik piroklastiklerden olu§maktadir. Ka-yaglarda porfirik, mikrolitik porfirik, hyalo-mikrolitik porfirik, vitrofirik, glomeroporfirik, pilotaksitik ve hyalopilitik dokular gozlenmektedir. Kayaglar plajiyoklas (An29-80), olivin (Fo65-82), klinopiroksen (ojit), ortopiroksen (enstatit), amfibol (Mg#: 0.57-0.71), biyotit (filogopit: 0.44-0.47, annit: 0.33-0.37), sani-din, kuvars ve opak mineral (titanomanyetit ve ilmenit) igermektedir. Kayaglar kalkalkali karakterli olup, orta-yuksek potasyum igerigine sahiptirler. Ana oksit ve iz element degi§imleri kayaglarin geli-§imindeki agik sistem magmatik diferensiyasyona i§aret etmektedir. Jeokimyasal veriler kayaglarda-ki fenokristal fazlarin fraksiyonla§masinin diferansiyasyon surecinde etkili oldugunu gostermekte-dir. Fakat buna asimilasyon±magma kari§iminin da e§lik etmi§ olabilecegi du§unulmektedir. Kayaglarin yuksek buyuk iyon yarigapli element (K, Rb, Ba, Th) ve goreceli olarak du§uk yuksek alan enerji-li element (Nb, Ta, Hf, Zr) igerikleri kayaglarin yitim izleri ta§iyan bir ana magmadan olu§tuklarina i§a-ret etmektedir.
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REFERENCES

References: 

Abdel-R, A.M. 1994. Nature of biotites from alkaline, hiomteric criteria. Mineral. Mag. (51), 431-435.
calk-alkaline and peraluminous magmas. Journal Dymek, R.F. 1983. Titanium, aluminum and interlayer
of Petrology. (35), 525-541. cation distributions in biotite from high grade
Bacon, C.R. and Hirschmann, M.M. 1988. Mg/Mn Partiti- gneisses, West Greenland, Am. Min. (68), 880-899.
oning as a test for equilibrium between coexiting Edwards, C., Menzies, M. and Thirwall, M. 1991. Eviden-
Fe-Ti Oxides. Am. Min. (73), 57-61. ce from muriah, indonesia, for the interplay of
Droop, G.T.R. 1987. A general equation for estimating supra-subduction zone and intraplate processes
Fe3+ concentrations in ferromagnesin silicates in the genesis of potassic alkaline magmas. J. Pet-
and oxides from microprobe analyses using stoic rol. (32), 555-592.
Pamukkale Universitesi Muhendislik Bilimleri Dergisi, Cilt 15, Sayi 2, 2009
261
O.Kilig, H.Kurt, K.Asan ve G.Kansun
Irvine, T. N. and Baragar, W.R.A. 1971. A guide to the chemical classification of common volcanic rocks. canadian journal of earth science. (8), 523-548.
Keskin, M. 1998. Erzurum-Kars platosunun carpijma ko-kenli volkanizmasinin volkano-stratigrafisi ve Yeni K/Ar ya$ bulgulari ijiginda evrimi, Kuzey Anadolu. MTA Derg. (120), 135-157.
Keskin, M. 2003. Magma generation by slab steepening and breakoff beneath a subduction-accretion complex: An alternative model for collision-related volcanism in Eastern Anatolia, Turkey, Geophys. Res. Lett., 30 (24), 8046, doi:10.1029/ 2003GL018019.
Keskin, M. 2005. Domal uplift and volcanism in a collision zone without a mantle plume: Evidence from Eastern Anatolia. http://www.mantleplumes. org/Anatolia.html.
Keskin, M., Pearce, J.A. and Mitchell, J.G. 1998. Volcano-stratigraphy and Geochemistry of Collision-related Volcanism on Erzurum-Kars Plateau, Nort¬heastern Turkey, J. Volcanol. Geotherm. Res. (85),
405-422.
Kilic, O. 2006. Pasinler (Erzurum) kuzeyindeki volkanik kayaclarin petrografik ve jeokimyasal incelenme-si. Selcuk Uni. Fen Bil. Enst., Yuksek Lisans Tezi, 87 s.
Le Bas, M.J., Le Maitre, R.W., Streckeisen, A. and Zanet-tin, B. 1986. A Chemical classification of volcanic rocks based on total Alkali-Silica diagram. Journal of Petrology. (27), 745-750.
Leake, B.E., Woolley, A.R., Arps, C.E.S., Birch, W.D., Gil¬bert, M.C., Grice, J.D., Hawthorne, F.C., Kato, A., Kisch, H.J., Krivovichev, V.G., Linthout, K., Laird, J., Mandaring, J.A., Maresch, W.V., Nickel, E.H., Rock, N.M.S., Schumacher, J.C., Smith, D.C., Stephenson, N.C.N., Ungaretti, L., Whittaker, E.J.W. and Youzhi, G. 1997. Nomenclature of amphiboles: Report of subcomittee on amphiboles of the international mineralogical association, comission on new mi¬nerals and mineral names. Canadian mineralogist.
(35), 219-246.
Morimoto, N., Fabries, J., Ferguson, A.K., Ginzburg, I.V., Ross, M., Seifert, F.A., Zussman, J., Aoki, K. and Got-tardi, G. 1988. Nomenclature of pyroxenes. American Mineralogist. (73), 1123-1133.
Pearce, J.A. and Cann, J.R. 1973. Tectonic setting of ba sic volcanic rocks determined using trace element analysis. E.P.S.L. (19), 290-300.
Pearce, J.A. 1983. Role of the Sub-Continental lithosp-here in magma genesis at active continental mar¬gins. In: Hawkesworth, C.J., Norry, M.J (Eds.), Con¬tinental basalts and mantle xenoliths. Shiva, Nant-wich, pp. 230-249.
Pearce, J.A., Bender, J.F., De Long, S.E., Kidd, W.S.F., Low, P.J., Guner, Y., Saroglu, F., Yilmaz, Y., Moorbath, S. and Mitchell, J.G. 1990. Genesis of collision volcanism in eastern anatolia, Turkey. J. Volcanol. Geot-herm. Res. (44), 189-229.
Sun, S. and McDonough, W.F. 1989. Chemical and isoto-pic systematic of oceanic basalts: Implications for mantle compositions and processes. In: Saunders, A.D., Norry, M.J (Eds.), Magmatism in the Ocean Basins. Geol. Soc. London Spec. Publ. (42), 313-345.
Sengor, A.M.C. and Yilmaz, Y. 1981. Tethyan evolution of Turkey: A plate tectonic approach. Tectonoph-ysics. (75), 181-241.
Sengor, A.M.C., Ozeren, S., Zor, E., and Genc, T. 2003. East Anatolian high plateau as a mantle-supported, N-S shortened domal structure, Geophys. Res. Lett., 30 (24), 8045, doi: 10.1029/2003GL017858.
Temel, A., Gundogdu, M.N. and Gourgaud, A. 1998. Pet-rological and geochemical characteristic of ceno-zoic High-K calcalkaline volcanism in Konya, Cent¬ral Anatolia, Turkey. J. Volcanol. Geotherm. Res.
(85), 327-354.
Wilson, M., Tankut, A. and Gulec, N. 1997. Tertiary volca-nism of the Galatia Province, North-West Central Anatolia, Turkiye. Lithos. (429), 105-121.
Wood, D.A. 1980. The Application of a Th-Hf-Ta diagram to problems of tectonomagmatic classification and to estabilishing the nature of crustal contami¬nation of basaltic lavas of the british tertiary vol¬canic province. Earth. Planet. Sci. Lett. (50), 11-30.
Yavuz, F. 2007. WinAmphcal: A Windows Prog¬ram for the IMA-04 Amphibole Classificati¬on. Geochem. Geophys. Geosyst. (8), 1-12, doi:10.1029/2006GC001391.
Yavuz, F. and Oztaj, T. 1997. BIOTERM-A Program For Evaluating and Plotting Microprobe Analyses of Biotite from Barren and Mineralized Magmatic Su¬ites. Computers & Geosciences. (23), 897-907.

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