Formation mechanism of soft sediment deformation structures in Pliocene-Quaternary lacustrine sediments of Pasinler-Horasan Basin (Erzurum-Türkiye) and its relationship with regional geodynamics

Serkan Üner

Makale detayları

Formation mechanism of soft sediment deformation structures in Pliocene-Quaternary lacustrine sediments of Pasinler-Horasan Basin (Erzurum-Türkiye) and its relationship with regional geodynamics

Yazarlar:

Serkan Üner

Yayıncı:

Hacettepe University

Ana Başlıklar:

Genel Jeoloji

Dergi:

Yerbilimleri Vol.46 Issue 1, pp.25-48

Belge Tipi:

Makale

Yayın Tarihi:

4/2025

Belge Dili:

Türkçe

Document ID (Org No.):

2001347383

pISSN:

1301-2894

Anahtar kelimeler:

Özet:

 Soft-sediment deformation structures of different types are frequently observed in the PlioceneQuaternary lacustrine deposits of Pasinler-Horasan Basin. These structures are located in four locations in the basin Yukarı Tahirhoca-1, Yukarı Tahirhoca-2, Karacaören, and İncesu at different levels within fine gravelly, sandy and silty sediments. According to their morphological features, the formation mechanisms of these structures, defined as flame structure, load structure, convolute structure, slump structure, dish-and-pillar structure and ball-and-pillow structure, were interpreted by considering sedimentological features, stratigraphic location and regional factors. With these data, it was revealed that soft sediment deformation structures were formed by the effect of overloading effect and seismic tremors. While rapid sediment accumulation and underwater mass movements constitute the overloading effect that creates some of the deformation structures, seismic tremors with a magnitude of M  5 constitute the other triggering mechanism. The Horasan-Şenkaya, Tutak and Karayazı faults, which are very close to the liquefaction areas  35 km, have the potential to produce the seismic shocks necessary for deformation.

 Soft-sediment deformation structures of different types are frequently observed in the PlioceneQuaternary lacustrine deposits of Pasinler-Horasan Basin. These structures are located in four locations in the basin Yukarı Tahirhoca-1, Yukarı Tahirhoca-2, Karacaören, and İncesu at different levels within fine gravelly, sandy and silty sediments. According to their morphological features, the formation mechanisms of these structures, defined as flame structure, load structure, convolute structure, slump structure, dish-and-pillar structure and ball-and-pillow structure, were interpreted by considering sedimentological features, stratigraphic location and regional factors. With these data, it was revealed that soft sediment deformation structures were formed by the effect of overloading effect and seismic tremors. While rapid sediment accumulation and underwater mass movements constitute the overloading effect that creates some of the deformation structures, seismic tremors with a magnitude of M  5 constitute the other triggering mechanism. The Horasan-Şenkaya, Tutak and Karayazı faults, which are very close to the liquefaction areas  35 km, have the potential to produce the seismic shocks necessary for deformation.

 Soft-sediment deformation structures of different types are frequently observed in the PlioceneQuaternary lacustrine deposits of Pasinler-Horasan Basin. These structures are located in four locations in the basin Yukarı Tahirhoca-1, Yukarı Tahirhoca-2, Karacaören, and İncesu at different levels within fine gravelly, sandy and silty sediments. According to their morphological features, the formation mechanisms of these structures, defined as flame structure, load structure, convolute structure, slump structure, dish-and-pillar structure and ball-and-pillow structure, were interpreted by considering sedimentological features, stratigraphic location and regional factors. With these data, it was revealed that soft sediment deformation structures were formed by the effect of overloading effect and seismic tremors. While rapid sediment accumulation and underwater mass movements constitute the overloading effect that creates some of the deformation structures, seismic tremors with a magnitude of M  5 constitute the other triggering mechanism. The Horasan-Şenkaya, Tutak and Karayazı faults, which are very close to the liquefaction areas  35 km, have the potential to produce the seismic shocks necessary for deformation.

 Pasinler-Horasan Havzasının, Pliyosen-Kuvaterner yaşlı gölsel çökellerinde farklı tipte yumuşak çökel deformasyon yapıları sıklıkla gözlenmektedir. Bu yapılar havzada dört lokasyonda Yukarı Tahirhoca-1, Yukarı Tahirhoca-2, Karacaören ve İncesu ince çakıllı, kumlu ve siltli çökeller içerisinde, farklı seviyelerde bulunmaktadır. Morfolojik özelliklerine göre, alev yapısı, yük yapısı, büklümlü yapı, kayma-oturma slump yapısı, tabak ve sütun yapısı ve top ve yastık yapısı olarak tanımlanan bu yapıların oluşum mekanizmaları, sedimantolojik özellikler, stratigrafik konum ve bölgesel faktörler dikkate alınarak yorumlanmıştır. Elde edilen veriler ile, yumuşak çökel deformasyon yapılarının, üst basınç etkisi ve sismik sarsıntılar sebebiyle oluştuğu ortaya konulmuştur. Hızlı sediman birikimi ve sualtı kütle hareketleri deformasyon yapılarının bazılarını meydana getiren üst basınç etkisini oluştururken, M  5 büyüklüğündeki depremlerin sebep olduğu sarsıntılar diğer tetikleme mekanizmasını oluşturmaktadır. Sıvılaşma alanlarına çok yakın mesafede bulunan  35 km Horasan-Şenkaya, Tutak ve Karayazı fayları, deformasyon için gerekli sismik sarsıntıları üretebilecek potansiyele sahiptir.

Makale detayları

Formation mechanism of soft sediment deformation structures in Pliocene-Quaternary lacustrine sediments of Pasinler-Horasan Basin (Erzurum-Türkiye) and its relationship with regional geodynamics

Yazarlar:

Serkan Üner

Yayıncı:

Hacettepe University

Ana Başlıklar:

Genel Jeoloji

Dergi:

Yerbilimleri Vol.46 Issue 1, pp.25-48

Belge Tipi:

Makale

Yayın Tarihi:

4/2025

Belge Dili:

Türkçe

Document ID (Org No.):

2001347383

pISSN:

1301-2894

soft sediment deformation structure

lacustrine deposits

overloading effect

seismic tremor

Pasinler-Horasan BasinYumuşak çökel deformasyon yapısı

göl çökeli

üst basınç etkisi

sismik sarsıntı

Pasinler-Horasan Havzası

Sayı

Makale detayları

Yazarlar: Serkan Üner

Yayıncı: Hacettepe University

Ana Başlıklar: Genel Jeoloji

Dergi: Yerbilimleri Vol.46 Issue 1, pp.25-48

Belge Tipi: Makale

Yayın Tarihi: 4/2025

Belge Dili: Türkçe

Document ID (Org No.): 2001347383

pISSN: 1301-2894

Sayı

Yazarlar:

Serkan Üner

Yayıncı:

Hacettepe University

Ana Başlıklar:

Genel Jeoloji

Dergi:

Yerbilimleri Vol.46 Issue 1, pp.25-48

Belge Tipi:

Makale

Yayın Tarihi:

4/2025

Belge Dili:

Türkçe

Document ID (Org No.):

2001347383

pISSN:

1301-2894