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Full-Text Articles in Physical Sciences and Mathematics
Petrology, Geochemistry, And Evolution Of The Iron Skarns Along The Northern Contact Of The Eğrigöz Plutonic Complex, Western Anatolia, Turkey, Tolga Oyman, İsmet Özgenç, Murat Tokcaer, Mehmet Akbulut
Petrology, Geochemistry, And Evolution Of The Iron Skarns Along The Northern Contact Of The Eğrigöz Plutonic Complex, Western Anatolia, Turkey, Tolga Oyman, İsmet Özgenç, Murat Tokcaer, Mehmet Akbulut
Turkish Journal of Earth Sciences
The Çatak and Küreci skarn districts are located approximately 10 km NW of Emet (Kütahya) in Western Turkey. The skarn and associated ore formations mainly occur at the contact between intrusive rocks of the Eğrigöz Plutonic Complex (EPC) and calcareous pelitic schists with limestone lenses of the Sarıcasu Formation and meta-carbonate rocks of the Arıkaya Formation. The major, trace, and rare earth element analysis of the igneous rocks indicate that they are high level, subalkaline, calc-alkaline, peraluminous to metaluminous I-type intrusions, generated in a continental arc setting. Three distinct skarn-type mineralization, differing in their host rocks and distance from the …
Magmatic Processes At The Volcanic Front Of Central Mexican Volcanic Belt: Sierra De Chichinautzin Volcanic Field (Mexico), Fernando Velasco-Tapia, Surendra Pal Verma
Magmatic Processes At The Volcanic Front Of Central Mexican Volcanic Belt: Sierra De Chichinautzin Volcanic Field (Mexico), Fernando Velasco-Tapia, Surendra Pal Verma
Turkish Journal of Earth Sciences
The Sierra de Chichinautzin (SCN) volcanic field is considered one of the key areas to understand the complex petrogenetic processes at the volcanic front of the Mexican Volcanic Belt (MVB). New as well as published major- and trace-element and Sr and Nd isotopic data are used to constrain the magma generation and evolution processes in the SCN. From inverse and direct modelling, combined ^{87}Sr/^{86}Sr and ^{143}Nd/^{144}Nd data, and use of multi-dimensional log-ratio discriminant function based diagrams and other geological and geophysical considerations, we infer that mafic magmas from the SCN were generated by partial melting of continental lithospheric mantle in …
Genesis Of The Hydrothermal Karaçayır Kaolinite Deposit In Miocene Volcanics And Palaeozoic Metamorphic Rocks Of The Uşak-Güre Basin, Western Turkey, Selahatti̇n Kadi̇r, Hülya Erkoyun
Genesis Of The Hydrothermal Karaçayır Kaolinite Deposit In Miocene Volcanics And Palaeozoic Metamorphic Rocks Of The Uşak-Güre Basin, Western Turkey, Selahatti̇n Kadi̇r, Hülya Erkoyun
Turkish Journal of Earth Sciences
The Karaçayır kaolinite deposit, situated in the Uşak-Güre basin of western Turkey, is hosted by rhyolite and andesite of the Miocene Dikendere volcanics, and by muscovite schist, glaucophane schist, talc schist and chlorite schist of the Palaeozoic Eşme Formation. The association of kaolinization with silicification and Fe-oxidation, and the presence of pyrite, chalcopyrite and gypsum, suggest that hydrothermal alteration processes in the volcanics and schists were controlled by faults. Thus, prevalent kaolinite is associated with quartz, smectite, illite and opal-CT in the centre of the deposit, with relative increases in smectite, illite, chlorite and Fe (oxyhydr)oxide phases outwards and upwards. …