Ancient karst topography of the mountain Fergana region and some problems of paleomorphostructural analysis of mountain areas

Abstract

General trends of mountain Fergana paleoreliei evolution during Late Paleozoic - Early Mesozoic are considered, Jurassic karst topography formation is analysed in detail, in particular typical cone and tower karst landforms and some associated forms such as erosional karst plains and niches at hills' base due to corrosion and gravitational processes. The mentioned landforms of ancient karst are considered to serve as -datum levels as well as indicators of morphostructures position when carrying out morphostructural analysis of mountain regions.