LATE PALEOZOIC PHOSPHORITE-BEARING BASIN IN THE SOUTHERN URALS: DEVELOPMENT HISTORY, MAIN TYPES OF PHOSPHATE OCCURRENCES, AND THEIR FACIES AND STRATIGRAPHIC POSITION

Abstract

Based on the detailed biostratigraphic study of the entire polyfacies sedimentary complex in the Uralian foredeep, the distribution of Late Paleozoic (Middle Carboniferous-Permian) phosphate occurrences and phosphorite deposits is shown. Their genetic relation with the foredeep development and facies constraints are established. A new concept of genesis of the Asha and Dombar deposits is substantiated and the age of the Asha deposit is revised. Prospects of their industrial development are suggested.