Uranium deposits and areal dykes in Chatkal-Kuramin range

Comparative data on uranium occurences and areal dykes of diabasic porphyrites in Chatkal-Kuramin range are presented. The features indicating on later age of dykes and consequently on before dykes age of uranium molybdeneous deposits are: cut of various ore textures with chilled contacts of dykes, a lot of ore xenolyths in a chilled zone, apophyses of diabasic porphyrite in ore, metamorphism signs in thermal areas of dykes and others. The studied belts of areal,dykes and postvolcanic late orogenic linear fractures are seemed to be ore localized structures. The revealed difference in ages of uranium-molybdeneous and uranium-carbonaceous deposits is the base for prospecting and estimation of uranium-bearing ores at any region. (author). 12 refs.; 11 figs