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Your search keyword '"DÖNMEZ, CAHIT"' showing total 5 results
Start Over Author "DÖNMEZ, CAHIT" Topic orogenic belts
5 results on '"DÖNMEZ, CAHIT"'

1. Composition of Pancarli Magmatic Ni-Cu±(PGE) Sulfide Deposit in the Cadomian-Avalonian Belt, Eastern Turkey.

Author

Yildirim, Esra, Yildirim, Nail, Dönmez, Cahit, Günay, Kurtuluş, Korkmaz, Taner, Akyildiz, Mustafa, and Gören, Burcu

Subjects
SULFIDE minerals, SULFIDES, OROGENIC belts, CONTINENTAL margins, GNEISS, MAGMAS
Abstract

Pancarli Ni-Cu±(PGE) sulfide deposit occurs in the Neoproterozoic basement complex of the Bitlis massif, which is one of the Andean-type active continental margin fragments with arc-type assemblages represented by the Cadomian orogenic belt. Pancarli sulfides are associated with quartzo-feldspathic gneisses (country rock) and mafic intrusions (host rock). Composed of only semi-massive ore, the Ni-Cu±(PGE) sulfide deposit is a small-scale deposit, and it does not contain net-textured and disseminated ore. The mineral assemblage comprises pyrrhotite, pentlandite, and chalcopyrite. The semi-massive ore samples contain 2.2 wt.%−2.9 wt.% Ni, 0.8 wt.%−2.2 wt.% Cu (Cu/(Cu+Ni)=0.2−0.5) and 0.13 wt.%−0.17 wt.% Co. The Cu/Ni ratios (average 0.57) are consistent with the segregation of sulfides from a basaltic magma. Low Pt+Pd100%S values of 0.08 ppm−0.89 ppm, relatively low Pt/Pd ratios of 0.2–1.4, and Pd/Ir ratios of 4.5–39 have also been revealed. These values demonstrate that the magma reached S saturation before its emplacement and the mineralization with high Cu/Pd ratios formed by sulfides segregated from a PGE-depleted magma. δ34S isotope values (average −3.1‰) of Pancarli sulfides are lower than mantle source. Negative δ34S value indicates contamination from surrounding rocks. Concerning the composition, remobilization style and magma type, the Pancarli Ni-Cu±(PGE) sulfide deposit is similar to the deposits associated with Andean-type magmatic arcs located in the convergent plate margin settings. [ABSTRACT FROM AUTHOR]

Published
2020
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2. Eski Deniz Tabanı Hidrotermal Sistemlerine Bir Örnek: Kısabekir-Obatepe Cevherleşmesinin (Elazığ-Türkiye) Mineralojisi, Tektonizması ve Kökeni.

Author

Yıldırım, Nail, Eroğlu, Mahmut, Yıldırım, Esra, Sönmez, Yunus, Tokoğlu, Mustafa, Tuncer, Burak, Demir, Doğukan, Öztürk, Okan, Eren, Ümit Tevfik, Aral, Zehra Deveci, and Dönmez, Cahit

Subjects
OROGENIC belts, ULTRABASIC rocks
Abstract

Copyright of Abstract of the Geological Congress of Turkey / Türkiye Jeoloji Kurultayı Bildiri Özleri is the property of TMMOB JEOLOJI MUHENDISLERI ODASI and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Published
2024

3. Aynı Okyanusal Litosfer Üzerinde Gelişmiş Üç Farklı Tip Volkanojenik Masif Sülfid (VMS) Oluşumu: Orta Pontid VMS Yatakları Örneği.

Author

Günay, Kurtuluş, Çavdar, Buğra, Oyan, Vural, Dönmez, Cahit, Özkümüş, Serkan, Yıldırım, Nail, Parlak, Osman, Çiftçi, Emin, Baran, Cüneyt, Coşkun, Kenan, and Ersoy, Gökçe Gamze

Subjects
OROGENIC belts, STRUCTURAL geology, EARTH sciences, GEOLOGICAL research
Abstract

Copyright of Abstract of the Geological Congress of Turkey / Türkiye Jeoloji Kurultayı Bildiri Özleri is the property of TMMOB JEOLOJI MUHENDISLERI ODASI and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Published
2023

4. Karaburun Volkanojenik Masif Sülfid Yatağının Cevherleşme Özellikleri ve Sınıflandırılması, Orta Pontidler (Sinop, Türkiye).

Author

Çavdar, Buğra, Günay, Kurtuluş, Dönmez, Cahit, Özkümüş, Serkan, Baran, Cüneyt, Coşkun, Kenan, Ersoy, Gökçe Gamze, Mutlu, Halim, Oyan, Vural, Çiftçi, Emin, and Hanilçi, Nurullah

Subjects
OROGENIC belts, STRUCTURAL geology, EARTH sciences, GEOLOGICAL research
Abstract

Copyright of Abstract of the Geological Congress of Turkey / Türkiye Jeoloji Kurultayı Bildiri Özleri is the property of TMMOB JEOLOJI MUHENDISLERI ODASI and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Published
2023

5. Sey Deresi (Pütürge-Malatya) Cu-Zn-Au-Ag Cevherleşmesinin Jeolojisi, Özellikleri ve Oluşumu.

Author

Yıldırım, Nail, Yıldırım, Esra, Hanilçi, Nurullah, Özbaş, Fatih, Dönmez, Cahit, and Sönmez, Yunus

Subjects
OROGENIC belts, STRUCTURAL geology, EARTH sciences, GEOLOGICAL research
Abstract

Copyright of Abstract of the Geological Congress of Turkey / Türkiye Jeoloji Kurultayı Bildiri Özleri is the property of TMMOB JEOLOJI MUHENDISLERI ODASI and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Published
2023

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