Bu çalışmada Eskiköy-Doğanşehir (Malatya) bölgesindeki Neojen (?) yaşlı volkanik kayaçlarının petrografik ve jeokimyasal özellikleri incelenmiştir. Çalışma bölgesi Permo-Triyas yaşlı Malatya metamorfitleri, Üst Kretase yaşlı Berit ofiyoliti, Erken-Orta Eosen yaşlı Doğanşehir, Polat-Beğre granitoidi, Neojen (?) yaşlı volkanitler ve Plio-Kuvaterner yaşlı alüvyonlardan oluşmaktadır. İncelenen volkanik kayaçlar Permo-Triyas yaşlı Malatya metamorfik kayaçlarını sıcak dokanakla keserek yüzeylemişlerdir. Dasit ve riyolit bileşimindeki volkanitler başlıca plajiyoklas, sanidin, kuvars, biyotit ve amfibol minerallerinden oluşurlar. Söz konusu volkanitler kalk-alkali ve yüksek-K kalk-alkali karaktere sahiptirler. Primitif mantoya normalize edilmiş çoklu element ve kondrite normalize edilmiş nadir toprak element değişim diyagramında büyük iyon yarıçaplı litofil elementleri ve hafif nadir toprak elementleri zenginleşme göstermektedir ve yitime bağlı olarak okyanusal kabuktan türeyen çözeltiler tarafından metasomatize edilmiş bir mantodan kaynaklandığı düşünülmektedir.
In this study, the Neogen in Eskiköy-Doğanşehir (Malatya) The petroographic and geochemical characteristics of old volcanic rockets have been studied. Working area Permo-Triyas old Malatya metamorphs, Upper Kretase old Berit officoliti, Early-Middle Eosen old Doğanşehir, Polat-Beğre granitoidi, Neogen (?) The ancient volcanoes and Plio-Kuvaterner are composed of ancient aluvians. The explored volcanic rocks have surfaced the old Malaya metamorphic rocks with a hot touch. The volcanites in the composition of Dasit and Riolith are mainly made up of plagioclass, sanidin, quarts, biotites and amphibol minerals. These volcanoes have kalk-alcalic and high-K kalk-alcalic character. The primitive mantra normalized multi-elements and condrite normalized rare soil elements change diagram shows enrichment of large ions semi-dimensional litofil elements and lightly rare soil elements and is believed to be derived from a mantra metasomatized by solutions derived from the oceanic cortex depending on it.
In this study, petrographic and geochemical properties of Neogene (?)volcanic rocks in Eskiköy-Doğanşehir (Malatya) region were investigated. The study area consists of Permo-Triassic Malatya metamorphics, Late Cretaceous Berite ophiolite, Early-Middle Eocene Doğanşehir, Polat-Beğre granitoids, Neogene (?) volcanics, and Plio-Quaternary alluviums. The investigated volcanic rocks exposed the Permo-Triassic Malatya metamorphic rocks by cutting with hot contact. Volcanics in dacite and rhyolite composition mainly consist of plagioclase, sanidine, quartz, biotite and amphibole minerals. These volcanics have calc-alkali and high-K calc-alkali characters. In the primitive mantle normalized multi-element and chondrite-normalized rare earth element variation diagram, large ion lithophile elements and light rare earth elements show enrichment and are thought to be caused by a mantle metasomatized by solutions derived from the oceanic crust due to subduction.
Alan : Fen Bilimleri ve Matematik
Dergi Türü : Ulusal
Benzer Makaleler | Yazar | # |
---|
Makale | Yazar | # |
---|