Abstract:

In this study, it is aimed to make geometrically classification and find formation mechanism of mesoscopic folds of that are occur in Bozdağlar Massif (Northern Konya), and to compare them. In the context of the study, nearly a hundred mesoscopic folds which are developed on metamorphic rocks were analysed in the Altınekin, Meram-Dereköy and Sarayönü regions. The folds are classified based on the dip isogons and interlimb angles. The orthogonal thickness graphs of folds were constructed, and the flattening ratios were calculated. According to the geometrical classification of the folds it is detected that the flattened parallel folds (Class 1C) are the dominant fold type in the deformed rocks of the Bozdağlar Massif, and the folds in the competent rocks are generally represented by the Class 1C, whereas the folds of intervening incompetent rocks are characterized by Class 2 and Class 3. The Flattening ratios ( ) of Class 1C folds of Altınekin area are 0.4-0.8 for competent rocks and 0.3-0.8 for incompetent rocks. In the Meram-Dereköy area these ratio ( ) vary between 0.5 to 0.8 for folds in the competent rocks. The Class 1C folds that are observed in the vicinity of the Sarayönü area show 0.7 to 0.9 flattening value ( ). According to the Fleuty classification, it was determined that in accordance with flattening rates, folds developed as open, narrow and tight folds in all three regions, except only open folds did not develop in the Meram-Dereköy region.