GENESIS OF NEPTUNIAN DIKES IN THE STERLITAMAK SHIKHANS

A review of the existing ideas about prevalence, morphology and genesis neptunian dikes cutting through carbonate reef Lower Permian massifs showed ambiguity in interpretation their – they were considered as consedimentary interbiohermic cavities, interlayers associated with periodic flooding reefs, well filling tectonic cracks. New data obtained during field observations on Toratau, Yuraktau Shakhtau quarry allowed us to establish a large morphological diversity conclude that formation some bodies it is possible distinguish gevelopment stages calm active (catastrophic) sedimentation. The latter was accompanied by underwater landslide folds, crushing breccias collapse structures blocks rocks. Deep parts clefts Yuraktau, where material overlapping deposits could not reach, «healed» radially radiant aggregates calcite crystals.
 Neptunic are indicators seismic impact zone western side Pre-Uralian foredeep reflect influence Early collision growth Ural Mountains adjacent part East European Platform. Outcrops tubifite biogerms Asselian age found southern foredeep. modern analogue this process can be rocks area Great Barrier Reef Australia, discovered multibeam equipment.