A new approximation in determination of zonation boundaries of ignimbrite by ground penetrating radar: Kayseri,Central Anatolia,Turkey |
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| Authors: | Tamer Koralay Selma Kadioglu Yusuf Kağan Kadioglu |
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| Institution: | (1) Geological Engineering Department, Ankara University, Faculty of Engineering, Tandoğan, 06100, Ankara, Turkey;(2) Geophysical Engineering Department, Ankara University, Faculty of Engineering, Tandoğan, 06100, Ankara, Turkey |
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| Abstract: | Ground penetrating radar (GPR) method is used as a tool to identify the zonation boundaries in ignimbrite series through their
columnar section. Ignimbrites can be classified in terms of welding degree, colour, texture and mineralogical compositions.
The research area comprises a part of İncesu (Kayseri) ignimbrite at Central Anatolia, Turkey. This ignimbrite is divided
into three levels and each level has clear differences in terms of macroscopic and microscopic views. This paper presents
the results of an application of GPR for the determination of zonation boundary within the ignimbrite flow unit in the view
of their textural and petrological features. RAMAC CU II equipment was used with 250 MHz shielded antenna on parallel ten
profiles to observe the physical difference among the ignimbrite levels of the study area. Two levels out of three have been
defined at the İncesu ignimbrite and supported by field geology and petrographical studies. The first level, which is extremely
fractured structure, is about 1.5 m thick and matches with middle level of the İncesu ignimbrite. The second level has an
average 50–75 cm thickness and matches with lower level of the ignimbrite. In this manner, vertical lithological variations
should be taken into consideration during petrological investigation of the ignimbrites. |
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| Keywords: | Ignimbrite Zonation boundary Ground penetrating radar (GPR) Petrography İ ncesu/Kayseri |
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