Journals / Niğde Ömer Halisdemir Üniversitesi Mühendislik Bilimleri Dergisi / 2018 / Cilt: 7 - Sayı: 2

GEOLOGY AND FORMATION OF VEIN TYPE CU ± ZN MINERALİZATIONS WHICH OBSERVED IN FAULT ZONES IN THE KARGI OPHIOLITIC MELANGE

KARGI OFİYOLİTİK MELANJI İÇERİSİNDEKİ FAY ZONLARINDA GÖZLENEN DAMAR TİPİ CU±ZN CEVHERLEŞMELERİNİN JEOLOJİSİ VE OLUŞUMU

Pages
781–794
DOI
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

Based on our findings, it was determined that mineralizations observed in the Kargı Ophiolitic Melange cause a vein type hydrothermal bed that is associated with faulting.

📌 3 Key Takeaways

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Objective & Hypothesis:The lithostratigraphic units of different origin are located to the east of and around of Kargı (Corum) in the Central Pontides.
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Key Findings & Data:The thickness of the ore veins, which are observed as scattered and plastered, varies between 5 and 50 cm.
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Conclusion & Impact:Based on our findings, it was determined that mineralizations observed in the Kargı Ophiolitic Melange cause a vein type hydrothermal bed that is associated with faulting.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Yığışım kompleksi · Kargı Ofiyolitik Melanjı · damar tipi hidrotermal Cu±Zn cevherleşmeleri

Abstract

The lithostratigraphic units of different origin are located to the east of and around of Kargı (Corum) in the Central Pontides. The Bekirli formation, which is represented by metamorphic rocks, forms the basis of the region. On this basis, ophiolitic units come to overthrust as a result of the closure of the Tethys ocean. In this area, which is also known as the Accretionary Complex, the ophiolitic units are transitively designated as lateral and vertical units. Vein-type Cu ± Zn mineralizations are observed in fault zones, which developed within metadiabase and metabasalt belonging to Kargı Ophiolitic Melange. The paragenesis includes chalcopyrite, sphalerite, pyrrhotite, and pyrite minerals, where hydrothermal alteration is also observed in the ore zones. The thickness of the ore veins, which are observed as scattered and plastered, varies between 5 and 50 cm. In the geochemical analysis, Cu reached a maximum of 1162 ppm, and Zn reached a maximum of 1753 ppm. The 34S isotope analyzes of pyrite and chalcopyrite specimens are in the range of 2.70–7.02 ‰, indicating that the sulfide indicates a magmatic root. In liquid inclusion studies, percent NaCl salinity equivalents ranged from 4.96 to 18.22 and homogenization temperatures (Th, °C) ranged from 113 to 233 °C. Based on our findings, it was determined that mineralizations observed in the Kargı Ophiolitic Melange cause a vein type hydrothermal bed that is associated with faulting.

Özet

Orta Pontidlerde yer alan Kargı (Çorum) doğusu ve civarında farklı kökenli litostratigrafik birimler yer almaktadır. Bölgenin temelini metamorfik kayaçlar ile temsil olunan Bekirli formasyonu oluşturmaktadır. Bu temel üzerine Tetis okyanusunun kapanması sonucunda ofiyolitik birimler bindirme ile gelmektedir. Yığışım Kompleksi olarak da adlandırılan bu alanda ofiyolitik birimler yanal düşey geçişli olarak bulunmaktadır. Kargı Ofiyolitik Melanjına ait metadiyabaz ve metabazaltların içerisinde gelişmiş fay zonlarında damar tipi Cu±Zn cevherleşmeleri gözlenmektedir. Hidrotermal alterasyonun da görüldüğü cevher zonlarında parajenezde kalkopirit, sfalerit, pirrotin ve pirit mineralleri yer almaktadır. Saçınımlı ve sıvama şeklinde gözlenen cevher damarlarının kalınlığı 5-50 cm arasında değişmektedir. Jeokimyasal analizlerde Cu maksimum 1162 ppm’e ve Zn ise maksimum 1753 ppm’e kadar ulaşmaktadır. Pirit ve kalkopirit örneklerinin 34S izotop analizleri ‰ 2,70-7,02 aralığında olup sülfürün magmatik kökene işaret ettiğini göstermektedir. Sıvı kapanımı çalışmalarında % NaCl tuzluluk eşdeğerleri 4,96-18,22 arasında, homojenleşme sıcaklıkları (Th, oC) ise 113-233 oC arasında değişmektedir. Yapılan çalışmalar sonucunda Kargı Ofiyolitik Melanjı içerisinde gözlenen cevherleşmelerin faylanma ile ilişkili damar tipi hidrotermal bir yatağı karakterize ettiği belirlenmiştir.

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Cite This Article

KAYA, M., YALÇIN, C., KUMRAL, M. (2018). GEOLOGY AND FORMATION OF VEIN TYPE CU ± ZN MINERALİZATIONS WHICH OBSERVED IN FAULT ZONES IN THE KARGI OPHIOLITIC MELANGE. Niğde Ömer Halisdemir Üniversitesi Mühendislik Bilimleri Dergisi, Cilt: 7 - Sayı: 2, 781–794. https://ajindex.com/articles/290472

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