Determination of Paleoenvironmental Conditions in and Around the Ancient City of Troy by Rock Magnetism Method

Öz

This study focused on determining the paleoenvironmental conditions of Troy and its surroundings by using the magnetization properties of rocks. Rock magnetism analyzes were applied to the samples of the sounding drilled on the northern slope of the Troy ruins at the Paleomagnetism Laboratory of the Bulgarian Academy of Sciences. The results showed that floodplain sediments deposited in the delta sedimentary environment and containing archaeological materials represented an oxic environment from drilling samples to a depth of ~340 cm and the indicator of gradual decline in the hard isothermal residual magnetization (HIRM) parameter. Samples below 450 cm depth show intense iron reduction and the possible presence of iron sulfides due to the action of a magnetite-rich long-source flood. This has also led to high saturated isothermal residual magnetization (SIRM) values.

Anahtar Kelimeler

• Magnetic
• Troia
• Rock magnetism
• Palaeoenvironment
• Palaeogeography

Troya Antik Kenti ve Çevresinde Kaya Manyetizması Yöntemiyle Paleoçevre Koşullarının Belirlenmesi

Öz

Bu çalışma, kayaçların mıknatıslanma özelliklerinden yararlanarak Troya ve çevresinin paleoçevre koşullarının belirlenmesine odaklanmıştır. Troya ören yerinin kuzey yamacında açılan sondaja ait örneklere, Bulgar Bilimler Akademisi Paleomanyetizma Laboratuvarı’nda kaya manyetizması analizleri uygulanmıştır. Sonuçlar, delta çökel ortamında biriken ve arkeolojik materyaller içeren taşkın ovası sedimanlarının ~340 cm derinliğe kadar sondaj örneklerinden ve sert izotermal kalıntı mıknatıslanma (HIRM) parametresindeki kademeli düşüş göstergesinden oksik bir ortamı temsil ettiğini göstermiştir. 450 cm derinliğin altındaki örnekler, manyetit açısından zengin uzak kaynaklı bir taşkının etkisiyle yoğun demir indirgenmesinin ve olası demir sülfitlerinin varlığını göstermektedir. Bu durum aynı zamanda doygun izotermal kalıntı mıknatıslanma (SIRM) değerlerinin yüksek çıkmasına yol açmıştır.

Anahtar Kelimeler

• Manyetik
• Troya
• Kaya manyetizması
• Paleoçevre
• Paleocoğrafya

Kaynakça

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