Journals / Gümüşhane Üniversitesi Fen Bilimleri Dergisi / 2019 / Cilt: 9 - Sayı: 1

Investigation of the relative tectonic activity of the Karacasu Fault (SW Turkey) by geomorphic indices

Karacasu Fayı’nın (GB Türkiye) Göreceli Tektonik Aktivitesinin Jeomorfik İndislerle İncelenmesi

Pages
37–48
Publication Date
2022-10-18
DOI
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

Based on findinf on this study, the length of the segments and the ancient earthquakes in the region indicate the Karacasu Fault has a potential to produce earthquakes with M6 and or higher magnitudes earthquakes in the near future.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:The NW-SE trending Karacasu basin in the Aegean Extensional System cuts obliquely the Büyük Menderes graben.
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Key Findings & Data:The Karacasu Basin was developed in the form of a half-graben with about 30 km long and about 10 km a width.
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Conclusion & Impact:Based on findinf on this study, the length of the segments and the ancient earthquakes in the region indicate the Karacasu Fault has a potential to produce earthquakes with M6 and or higher magnitudes earthquakes in the near future.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Göreceli tektonik aktivite · Jeomorfik analiz · Karacasu Fayı

Abstract

The NW-SE trending Karacasu basin in the Aegean Extensional System cuts obliquely the Büyük Menderes graben. The Karacasu Basin was developed in the form of a half-graben with about 30 km long and about 10 km a width. This fault is called Karacasu Fault.The Pre-Neogene basement consists of schists and gneisses of the Menderes Massif. The Mio-Pliocene basin fill are represented by the conglomerates and sandstones along the basin margins, and mudstones and limestones at the basin center. This basin fill rest unconformably on the metamorphic basement, which is represented by the conglomerates and sandstones along the basin margins and mudstones and limestones at the basin center. The youngest unit is Quaternary units consists of coarse clastics. Based on direction, continuity and geometry of the Karacasu Fault is divided into two sub-segments as Çamköy and Yazır. Mountain front sinuosity (Smf), the ratio of valley floor width to valley height (Vf), stream length-gradient index (SL), asymmetry factor (AF), hypsometric integral (Hi) basin shape indices in the drainage areas and mountain fronts were calculated using DEM (12.5 m resolution) to determine the relative tectonic activity of the Karacasu Basin. By using the average of these calculated indices, the relative tectonic activity (Iat) index data point to was obtained. The relative tectonic activity of the segments with the obtained Iat index is divided into two classes. Iat index suggests very high relative tectonic activities for the NW tips of the both segments, while high tectonic activities was determined for the other parts of these segments. Based on findinf on this study, the length of the segments and the ancient earthquakes in the region indicate the Karacasu Fault has a potential to produce earthquakes with M6 and or higher magnitudes earthquakes in the near future.

Özet

Ege genişleme sistemindeki KB gidişli havzalardan birisi olan Karacasu Havzası, Büyük Menderes Grabeni’ni eğik olarak kesmektedir. Karacasu Havzası yaklaşık 30 km uzunluğa ve 10 km genişliğe sahip bir yarı graben şeklinde gelişmiştir. Grabeni GB’dan sınırlayan fay, Karacasu Fayı olarak adlandırılmaktadır. Neojen öncesi temel Menderes Masifi’nin gnays ve şistlerinden oluşur. Bu metamorfik temel üzerine havza kenarları boyunca çakıltaşı ve kumtaşları, havza merkezinde ise çamurtaşları ve kireçtaşları ile temsil edilen Miyo-Pliyosen yaşlı havza dolgusu uyumsuz olarak gelir. Üstte en genç olan birim Karacasu Formasyonu’nun Kuvaterner yaşlı kaba kırıntıları yer alır. Karacasu Fayı’nın gidişi, devamlılığı ve geometrisi dikkate alınarak, Çamköy ve Yazır olmak üzere iki ayrı segmente ayrılır. KB gidişli Karacasu Fayı, dağ önü sinüslülük oranı (Smf), vadi tabanı genişliği-yüksekliği oranı (Vf), akarsu uzunluk-gradyan indisi (SL), havza asimetri faktörü (AF), hipsometrik eğri ve integral (Hi) ve drenaj havzası şekli (Bs) indisleri yanı sıra, 12.5 m çözünürlüklü sayısal yükseklik modeli (SYM) kullanılarak hesaplanmıştır. Hesaplanan bu indislerin ortalaması kullanılarak göreceli tektonik aktivite (Iat) indisi elde edilmiştir. Elde edilen Iat indisi verileri, Çamköy ve Yazır segmentlerinin KB uçlarında çok yüksek, diğer bölümlerinde ise yüksek tektonik aktivite durumuna işaret etmektedir. Segmentlerin uzunluğu ve bölgedeki eski depremler, Karacasu Fayı’nın yakın gelecekte M6 veya üzeri büyüklükte deprem üretme potansiyeline sahip olduğunu göstermektedir.

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Cite This Article

TOPAL, S. (2022). Investigation of the relative tectonic activity of the Karacasu Fault (SW Turkey) by geomorphic indices. Gümüşhane Üniversitesi Fen Bilimleri Dergisi, Cilt: 9 - Sayı: 1, 37–48. https://ajindex.com/articles/527018

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References (8)

  1. Açıkalın, S., 2005. Sedimentary evolution of the Karacasu cross-graben (Aydın, West Anatolia). MSc, Eskişehir Osmangazi University, Eskişehir, Turkey (in Turkish with English abstract). Alçiçek, H., Jiménez-Moreno, G., 2013. Late Miocene to Pliocene fluvio-lacustrine system in Karacasu Basin (SW Anatolia, Turkey): depositional, palaeogeographic and palaeoclimatic implications. Sedimentary Geology, 291, 62–83.
  2. Azor, A., Keller, E. A. and Yeats, R. S., 2002. Geomorphic indicators of active fold growth; South Mountain-Oak Ridge Anticline, Ventura Basin, Southern California, Geological Society of America Bulletin. 114, 745–753.
  3. Bull, B. W., 1977. Tectonic geomorphology of the Mojave Desert, U.S. Geological Survey Contact Report 14-08-001-G-394. Bull, W. B. and McFadden, L. D., 1977. Tectonic geomorphology North and south of the Garlock fault, California, in: Geomorphology in Arid Regions, edited by: Doehring, D. O., Proceedings of the Eighth Annual Geomorphology Symposium, State University of New York, Binghamton, 115–138.
  4. Burbank, D. W. and Anderson, R. S., 2001. Tectonic Geomorphology. Blackwell Science. Burbank, D. W., 1992. Causes of recent Himalayan uplift deduced from deposited patterns in the Ganges basin: Nature, v. 357, p. 680– 683. Chen, Y.C., Sung, Q., Cheng, K.Y., 2003. Along-strike variations of morphotectonic features in the Western Foothills of Taiwan: Tectonic implications based on stream-gradient and hypsometric analysis. Geomorphology, 56, 109-137.
  5. Cox, R. T., 1994. Analysis of Drainage-Basin Symmetry as a Rapid Technique to Identify Areas of Possible Quaternary Tilt-Block Tectonics An Example from the Mississippi Embayment. Geological Society American Bulletin, 106, 571-581.
  6. El Hamdouni, R., Irigaray, C., Fernández, T., Chacón, J. and Keller, E. A., 2008. Assessment of relatiand actiand tectonics, southwest border of the Sierra Nevada (southern Spain). Geomorphology 96. Hack, J. T., 1973. Stream profile analysis and stream gradient index: Journal of Research of the United States Geological Survey. 1(4): 421–429.
  7. Hare, P. W. and Gardner, T. W., 1985. Geomorphic indicators of vertical neotectonism along converging plate margins, Nicoya Peninsula, Costa Rica, in: Tectonic Geomorphology, edited by: Morisawa, M. and Hack, J. T., Proceedings of the 15th Annual Binghamton Geomorphology Symposium, Allen and Unwin, Boston, 123–134.
  8. Hurtrez, J. E., Lucazeau, F., Lavé, J. and Avouac, J. P., 1999. Investigation of the relationships between basin morphol