Investigation of Tectonic Structure and Isostatic Balance Status of the Crust in Sivas-Erzurum Area with Gravity Data

Yıl 2025, Cilt: 12 Sayı: 25, 132 - 142, 30.04.2025

Ali Elmas

https://doi.org/10.54365/adyumbd.1628501

Öz

In this study, the tectonic structure and isostatic balance status of the crust in the Sivas-Erzurum area were investigated. Gravity data were used for this purpose. In the study, the total horizontal derivative technique was used to determine the mass boundaries. First, regional gravity values were obtained from Bouguer gravity data by filtering. Then, the first vertical derivative values of these values were calculated. The total horizontal derivative technique was applied to these derivative values. Thus, the mass boundaries presenting density differences were generally revealed. The isostatic balance status of the area was investigated by calculating the gravimetric moho and isostatic moho values. Thus, seismically active and passive areas were mapped. The study area is a tectonically very active area that is compressed by the northward movement of the African continent. Accordingly, the results of this study may be useful in determining the locations of virgin mineral deposits in the study area. In addition, the general view of the earthquake risk areas in the area is given in this study.

Anahtar Kelimeler

Tectonics , Total Horizontal Derivative , First Vertical Derivative , Structural Discontinuity , Isostatic Condition.

Sivas-Erzurum Alanındaki Kabuğun Tektonik Yapısının ve İzostatik Denge Durumunun Gravite Verileriyle Araştırılması

Öz

Bu çalışmada, Sivas-Erzurum alanındaki kabuğun tektonik yapısı ve izostatik denge durumu gravite verileri kullanılarak araştırılmıştır. Çalışmada, kütle sınırlarını belirlemek için toplam yatay türev tekniği kullanılmıştır. Bouguer gravite verilerinden süzgeçleme ile elde edilmiş rejyonal gravite değerlerinin birinci düşey türev değerlerine bu teknik uygulanmıştır. Böylece, yoğunluk farkı sunan kütle sınırları genel hatlarıyla ortaya koyulmuştur. Gravimetrik moho ve izostatik moho değerleri hesaplanarak, alanın izostatik denge durumu araştırılmıştır. Böylece, sismik olarak aktif ve pasif alanlar haritalanmıştır. Çalışma alanı, Afrika levhasının kuzeye doğru hareketiyle sıkışan ve buna bağlı olarak da tektonik olarak oldukça aktif bir alandır. Buna bağlı olarak bu çalışmanın sonuçları, çalışma alanındaki bakir maden yataklarının yerlerinin tespit edilebilmesinde fayda sağlayabilir. Ayrıca, alanda deprem riski taşıyan yerlerin genel görünümü bu çalışma ile verilmiştir.

Anahtar Kelimeler

Tektonik , Toplam Yatay Türev , Birinci Düşey Türev , Yapısal Süreksizlik , İzostatik Durum.

Etik Beyan

Çıkar çatışması, Sorumlu yazar herhangi bir çıkar çatışması olmadığını beyan eder.

Kaynakça

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