STRUCTURAL CHARACTERISTICS OF KIRAZLI DISTRICT, ÇANAKKALE, TÜRKİYE

Abstract

The Biga Peninsula, which geologically evolved in relation with the the closure of the Tethyan oceans during pre-Cenozoic and subsequent syn-, post-collisional extensional tectonic regime throughout the Cenozoic located in the northwestern Türkiye. The Kirazlı district and and surrounding regional study area covers the central part of Biga Peninsula where Permo-Triassic Rhodope and Sakarya Zones sutured during closure of Paleo-Tethyan marginal seas along Intra-Pontide Suture (IPS). Neo-Tethyan northward subduction and closure, limit the Biga Peninsula from south along İzmir-Ankara-Erzincan Suture (IAES). Following syn- and post-collisional, slab break-off, slab roll-back events accompanied by crustal extension, metamorphism, core-complex formation, southward retreat of subduction front and resulted in generally southward younging magmatism. Field observations showed that Kirazlı district was exampled both Rhodope and Sakarya basement rocks along its eastern sector those were covered by Oligocene volcanic sequence at the rest of district. Resultant Cenozoic structural architecture of post-collisional tectonic regime includes three and four predominant fault orientations respectively in regional and district scale study areas. Investigating the tectonic characteristics of these faults at both regional and district scales will be instrumental in unveiling the temporal and spatial relationships among Cenozoic structures. To achieve this goal, the study examines and discusses the tectonic properties associated with the identified predominant fault orientations.

Keywords

• Biga peninsula
• Kirazlı district
• Tethyan oceans
• Subduction
• Cenozoic extension
• Rhodop zone
• Sakarya zone
• Structural architecture

Thanks

This article is based on the studies carried out within the scope of the doctoral thesis titled " Temporal and Spatial Relations of Continental Deformation and Tectonic Controls with Porphyry Cu-Au and Epithermal Au Mineralization İn The Kirazlı Gold Deposit ". Alamos Gold Inc., Exploration Director Mehtap Karcı and Senior Geologist Gülsevim Özışık is greatfully thanked for their data sharing, accommodation and logistics support. Also Seequent® is thanked for providing academic licence for “Leapfrog Geo”.

KİRAZLI SAHASININ YAPISAL KARAKTERİSTİĞİ, ÇANAKKALE, TÜRKİYE

Abstract

Jeolojik evrimi, Tetis okyanuslarının Senozoyik öncesi dönemde kapanması ve takip eden Senozoyik sırasınca çarpışma ve çarpışma sonrası açılmalı tektonik rejim ile ilişkili olan Biga Yarımadası, Türkiye'nin kuzeybatısında yer almaktadır. Kirazlı sahası ve çevresindeki bölgesel çalışma alanı, Pontid İç Süturu (IPS) boyunca Paleo-Tetis kenar denizlerinin kapanması sırasında Permo-Triyas Rodop ve Sakarya zonlarının kenetlendiği Biga yarımadasının merkezini kapsamaktadır. Kuzeye doğru dalan ve çarpışan Neo-Tetis, Biga yarımadasını İzmir-Ankara-Erzincan Süturu boyunca güneyden sınırlamaktadır. Takip eden çarpışma ve çarpışma sonrası slab break-off ve slab roll-back olaylarına, kıtasal genişleme, metamorfik çekirdek kompleksi oluşumu, yitim cephesinin güneye çekilmesi eşlik etmiş ve genellikle güneye doğru gençleşen bir mağmatizmaya sebep olmuştur. Saha gözlemleri Kirazlı sahasının doğu kesiminde hem Rodop hem de Sakarya temel kayalarının bulunduğunu, sahanın geri kalan kısmında bu temelin Oligosen yaşlı volkanik istif tarafından ötüldüğünü göstermektedir. Çarpışma sonrası tektonik rejim sonucu ortaya çıkan Senozoyik yapısal mimarisi, bölgesel ve Kirazlı sahası ölçeğindeki çalışma alanlarında sırasıyla üç ve dört baskın fay oryantasyonu içerir. Bu bölgesel ve lokal ölçekteki fayların tektonik özelliklerini incelemek, Senozoyik yapılar arasındaki zamansal ve mekânsal ilişkileri ortaya çıkarmak için faydalı olacaktır. Bu amaçla, bu çalışma belirlenen baskın fay yönelimlerinin tektonik özelliklerini inceleyip tartışmaktadır.

Keywords

• Biga yarımadası
• Kirazlı sahası
• Tetis okyanusları
• Yitim cephesi
• Senozoyik genişleme
• Rodop zonu
• Sakarya zonu
• Yapısal mimari

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