AYRANCI'DAKİ BOLKARDAĞI BOKSİT ÇÖKELLERİNİN JEOLOJİK KARAKTERİSTİKLERİ, TOROS DAĞLARI, TÜRKİYE

Öz

Bu çalışmanın amacı, Bolkardağı bölgesinin en önemli boksit cevherleşmesinin bulunduğu Ayrancı yöresindeki boksit yataklarının stratigrafik konumunu belirlemektir. Bu kapsamda boksitin oluşumu sırasında stratigrafik özelliklerle ilişkili aşınım yüzeyi ve yan kayaçlarına göre boksitin yaşı belirlenecektir. Bölgede Orta Torosları oluşturan ana tektonik birimlerden biri olan Bolkardağı Birliğine ait Permiyen-Kretase yaşlı kayaçlar bulunmaktadır. Bu kayaçları örten Miyosen birimleri çalışma alanında yüzeylenmektedir. Karamanoğlu ofiyoliti ve daha yaşlı birimler Miyosen yaşlı Mazı ve Divlek formasyonları tarafından uyumsuz olarak örtülmektedir. Boksit yatakları Üst Permiyen yaşlı Dedeköy formasyonunda açıkça görülmektedir. Saha çalışmalarına göre, boksitler Geç Triyas - Erken Jura aralığında, Üst Permiyen yaşlı karbonat kayaları ve Alt Triyas yaşlı şeyl - kumtaşı - kireçtaşı birimleri üzerinde oluşmuş ve daha sonra karbonat kayaları içindeki mağara ve dolinlerde çökelmiştir. Boksitlerin dolomitlerin üzerinde ve altında, kireçtaşlarının içinde ve üzerinde yer almasının karbonat kayaçlarının farklı davranışlarından kaynaklandığı düşünülmektedir.

Anahtar Kelimeler

• Diaspore
• Bauxite
• Bolkardağı
• Ayrancı

GEOLOGICAL CHARACTERISTICS OF BOLKARDAĞI BAUXITE DEPOSITS IN AYRANCI, THE TAURUS MOUNTAIN, TURKEY

Öz

The aim of this study is to determine the stratigraphic position of the bauxite deposits in the Ayrancı region, where the most important bauxite mineralization of the Bolkardağı region is located. In this context, the age of bauxite will be determined by determining the erosion surface associated with stratigraphic features during the formation of bauxite and the age of bauxite according to its side rocks. In the region, there are Permian-Cretaceous aged rocks belonging to the Bolkardağı Union, one of the main tectonic units forming the Central Taurus Mountains. Miocene units covering these rocks are surfaced in the study area. Karamanoglu ophiolite and older units are uncomfortably covered by Miocene aged Mazı and Divlek formations. Bauxite deposits are clearly seen in the Upper Permian aged Dedeköy formation. According to the field studies, the bauxites were formed in the Late Triassic - Early Jurassic interval, on the Upper Permian aged carbonate rocks and Lower Triassic aged shale - sandstone - limestone units and then deposited in caves and dolines within the carbonate rocks. The fact that bauxites are located above dolomites and below, within and above limestones is thought to be due to the different behavior of carbonate rocks.

Anahtar Kelimeler

• Diaspore
• Bauxite
• Bolkardağı
• Ayrancı

Kaynakça

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