Petrographic and Geochemical characteristics of Paleozoic Gabbroic rocks around Tasdelen (Ozdil / Trabzon, NE Turkiye)

Keywords: Tasdelen Gabbro, Lithospheric mantle, Ozdil (Trabzon), NE Turkiye, Whole-rock Chemistry

Abstract

The Esatern Pontides comprises many plutonic rocks varying in age, composition and size from Paleozoic to Tertiary. Although those of especially Carboniferous aged ones from these plutonic rocks are widely observed as large bodies in the southern zone of the Eastern Pontides, they are less common in the northern zone and consist of smaller bodies. In this paper, Carboniferous aged Taşdelen Gabbroic rocks were investigated petrographically and geochemically. The Taşdelen Gabbroic rocks mainly consist of plagioclase, pyroxene, hornblende and Fe-Ti oxide minerals. They are calc-alkaline in characters and have low-K content. The samples have metalluminous characters and have low SiO2 contents (47-49 wt%). They are enriched in-large ion lithophile (LILEs) and light rare earth elements (LREEs) and depleted in high-field strength elements (HFSEs). Chondrite-normalized rare earth element distributions are characterized by concave-upward shapes (LaN/YbN = 2.59 to 3.07) and show slightly positive to negative Eu anomalies (EuN/Eu* = 0.97 to 1). All these features demonstrate that the studied gabbroic rocks may have been derived from partial melting of lithospheric mantle.

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Published
2022-12-31
How to Cite
Kaygusuz, A. (2022). Petrographic and Geochemical characteristics of Paleozoic Gabbroic rocks around Tasdelen (Ozdil / Trabzon, NE Turkiye). Journal of Engineering Research and Applied Science, 11(2), 2111-2122. Retrieved from http://www.journaleras.com/index.php/jeras/article/view/298
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