MORPHOGENETIC FEATURES OF GULLIES OF THE KACHA’S BASIN WITHIN THE INNERRIDGE OF THE CRIMEAN MOUNTAINS
The article touches upon the questions of gully’s morphogenesis in the river Kacha basin. Thestructural-geological, lithological and geomorphological conditions of formation of fluvial forms are considered. The detailed morphological and morphometric characteristics of the seven gully forms are given, the peculiarities of their origin and development are figured out. According to the features of morphogenesis in the survey area of the river Kacha basin gullies of Paleocene and Eocene cuestas can be considered. Gullies of Paleocene ridges also developed in different geological and geomorphological conditions. 1. On the structural slope of the Paleocene Cuesta with the barrier role of Eocene cuesta (subsequent, subsequent-resequent). In the transition from Cuesta to the cliffs of the river valley, they cross a sharp rectangular bend of the slope, which creates highly elevated local basis of erosion in the upper part of the slope. Combined with the slight slope of the longitudinal valleys, this factor prevents active cutting by temporary streams. This, in turn, hampers the growth of resequent areas where the longitudinal depression is a local base level of erosion. 2. On the slopes of the Eocene cuesta adjacent to the Paleocene limestone cliffs of the river valley. Active cutting in the limestone cliffs in the initial stages of morphogenesis creates a high gradient slope across the longitudinal profile, which determines the high rate of erosion. In these conditions, with clear predominance of the bottom erosion of high and steep slopes of the valley deep "gorge-like" lower reaches of gullies are formed. Gullies not only quickly cut in, but also rapidly grow within the structural slope, forming a bend in longitudinal profile. Forming an arcuate bend, the erosive forms grow parallel to the river valley to front of Eocene cuesta. The study deals with such questions of erosion and dismemberment of the Internal cuesta as butte’s or half-butte’s separation from outcrops (Mangup-Kale, Tepe-Kermen, etc.). However, definitive conclusions require researching in other areas of the foothills.