Geochemistry and U-Pb dating of the Yahyalı pluton and associated skarn occurrences, SW Kayseri (Central Türkiye): Geodynamic significance and relation to mineralization


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Tükel F., Tiringa D., Hanilçi N., Ateşçi B., Aysal N., Alan İ.

Journal of Geochemical Exploration, cilt.274, 2025 (SCI-Expanded, Scopus) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 274
  • Basım Tarihi: 2025
  • Doi Numarası: 10.1016/j.gexplo.2025.107756
  • Dergi Adı: Journal of Geochemical Exploration
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Aqualine, Artic & Antarctic Regions, Chemical Abstracts Core, Compendex, INSPEC, Pollution Abstracts, Civil Engineering Abstracts
  • Anahtar Kelimeler: Magma chamber process, Porphyry type mineralization, Skarn formation, U-Pb dating
  • İstanbul Üniversitesi-Cerrahpaşa Adresli: Evet

Özet

The Yahyalı Pluton is an intrusion that intruded into the Yahyalı Nappe in the Eastern Taurus Belt. However, its outcrops are observed in a narrow area due to insufficient erosion depth and few studies have been carried out. This pluton is mainly composed of granite, granodiorite, diorite and monzonite. These facies are predominantly calc-alkaline and partly high-K calc-alkaline series, with an I-type character. The geochemical behaviour of the pluton suggests that mafic magmas of mantle origin have undergone a high degree of fractional crystallization (FC) and may have been partially mixed and/or contaminated by felsic magmas of crustal origin. In this study, the Yahyalı pluton and associated garnet skarn formations were dated for the first time. Zircon U-Pb dating of samples taken from different levels of the Yahyalı pluton yielded concordia ages of 52.37 ± 0.41 Ma, 53.66 ± 0.30 Ma, 52.59 ± 0.37 Ma and 52.05 ± 0.36 Ma, respectively. In addition, a lower intercept age of 50.1 ± 3.3 Ma (MSWD = 1.4) (Early Eocene) was obtained from garnet skarn formations. Although the pluton has limited outcrops, associated mineralization (Fe and Fe-Cu skarn, Pb-Zn) occurs over an extensive area, suggesting that large parts of the pluton may not have been eroded. This suggests that the Yahyalı pluton is a fertile magma in terms of mineralization and that there is a high potential for skarn, hydrothermal and porphyry-type mineralization associated with the magmatic system at deeper depths in the region.