Abstract: Our studies were carried out in the NNE-SSW trending mountainous mass (2703m) east of Niğde central district. The massive mass is separated from the Melendiz volcanic complex in the west by the Karasu depression, and from the Aladağlar mass in the east by the Ecemiş Stream depression. In the northwest, there are the Ovacık and Konaklı basin areas, which form a transition to the Gölcük depression, and in the north, the Çayırlı Stream basin, which opens to the Sultan Sazlığı basin. The massif is bordered by the Toraman Dere valley in the south. The middle part of the exposed massif consists of Paleozoic plutonic rocks. Overlying Mesozoic metamorphic units surround the mass. Transitions from the mountainous area to the surrounding depression areas occur through sloping continental fills covered by Cenozoic sedimentary units. Morpho climatic-morphogenetic denudational factors and processes played an important role in the actual development of the massif during the Neotectonic period. Volcanic and young tectonic movements that took place in the Plio-Quaternary created its current appearance. The tectonic mobility of the Niğde Massif, one of the important massifs of Central Anatolia, and its striking linear lines are the main subject of this study. The lineaments that cause the staggering of landform generations in topographic development and the direction of stream drainage have been evaluated in a digital environment. Morphometric parameters such as Mountain Front Sinusity Ratio (Smf), Ratio of Valley Floor Width to Valley Height (Vf), Stream-basin morphography were applied to 6 valley basins connected to different areas where linear lines determined by field studies, aerial photographs and remote sensing techniques were characteristically observed. When numerical data were evaluated, it was revealed that the Ecemiş Stream and Toraman Stream areas were older, while the Karasu-Gölcük and Sultan Sazlığı areas became younger in the Plio-Quaternary and Holocene. Both the entire massif and the river basins evaluated reflect the effects of tectonic regimes affecting the depression areas surrounding the massif. Basins do not belong to a single period, and they have continued their geomorphological development under the influence of regional tectonic regimes, which form each basin's own discharge basin. Numerical data show that the Ecemiş Stream and Toraman Stream basins are older, and the Karasu-Gölcük and Sultan Sazlığı basins were in motion during the Plio-Quaternary.
Keywords: Central Anatolia, Niğde Massif, Basin Tectonics, Neotectonic, Fluvial Geomorphology