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- MakaleYalnız künye2023Natural Walls of Anatolia: formation and development of Diş Kayalıkları as a structural landform (Sivas, Türkiye)
Uzun, Ali; Aylar, Faruk; Zeybek, Halil İbrahim; Gürgöze, Serkan; Bahadir, Muhammet; Alemdağ, Selçuk
The Diş Kayalıkları is one of the largest and most striking examples of crests in the world and is located between Eskidere and Boğazören villages of the İmranlı district of the Sivas province in Türkiye. The crests, which resemble castle walls when viewed from afar, have a real wall pattern due to the right-angled crack system of the bedrock when viewed closely. This study aims at investigating the geomorphological features of the Diş Kayalıkları and determining how the geological and geomorphological evolution of the Diş Kayalıkları took place and how the current formation mechanism continues. In the region, the mid-latitude continental climate prevails with cold humid winters and warm dry summers. The bedrock consists of Miocene bedded deposits of different resistance, folded by young tectonic movements. Diş Kayalıkları was formed by selective erosion of less resistant terrain around a pack of resistant rock on the steeper southern slope of an asymmetrical anticline. It has a length of 4750 m in the approximately northwest-southeast direction, a maximum height of 30 m, and a width varying between 5 and 8 m. In the present morphological appearance of the Diş Kayalıkları, it can be stated that the structure formed after the tectonic formation process was eroded under the control of the local climate and crest formation was realized. In the following process, the crest experienced a polycyclic process where different landforms were formed. There are smaller landforms such as karren, cave and rock window on Diş Kayalıkları, and macrofossil beds in some places. This highly attractive geomorphosite, unknown to wider public, should be investigated from various scientific aspects and should be brought to regional tourism by making the necessary infrastructure and promotion studies.
- MakaleYalnız künye2015Determination of Kula basalts (geosite) in Turkey using remote sensing techniques
Corumluoglu, Ozsen; Vural, Alaaddin; Asri, Ibrahim
Kula Region (Manisa, Turkey), with its 80 volcanic cones, lava flows, basalt plateaus and basalt columns, fairy chimney formations in canyons carved by the Gediz River, shelter cities hidden in volcanic lava, footprint fossils belonging to the first humans, and geological uniqueness, has a great importance in terms of geotourism potential as it is being a natural heritage in the Aegean region of Anatolia. In this study, some remote sensing image processing techniques such as band combination, band rationing, and principal component analyses were used to depict the cultural and natural geosite known as Kula basalts in Turkey. Satellite images utilized here in this study were Landsat band images (band 1 to band 7). Principal component analyses (PCA) were performed on the first ratio group with 5/4, 5/1, and 3/7 bands and then on the second ratio group with 3/1, 4/5, and 3/2 bands. As a conclusion and outcome of this PCA, it was found that red, green, and blue (RGB) composite with PC1 and PC3 gray-level images from the first ratio group and PC2 gray-level image from the second group showed up the basalt areas better than those from other techniques studied in this research. After unsupervised classification of this final composite of PCA, it is computed that the basalt rocks in Kula cover an area of 36,774 ha totally.