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Title: THE STRUCTURAL TECTONIC POSITION AND PREDICTIVE SEARCH CRITERIA FOR THE LEAD-ZINC KARST MINERALISATION (SOUTH KAZAKHSTAN)
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THE STRUCTURAL TECTONIC POSITION AND PREDICTIVE SEARCH CRITERIA FOR THE LEAD-ZINC KARST MINERALISATION (SOUTH KAZAKHSTAN)
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1314-2704
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English
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20
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1.1
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The paper considers the structural and tectonic position of the mineralisation in the case of the Achisai ore district. Formation of lead and zinc ores at the Achisai deposit was conditioned by regeneration of stratified ore clusters as a result of tectonic or tectonic-magmatic activation. Therefore, the structural-tectonic control of mineralisation of the Achisai type is one of the cardinal ones, along with the lithologic-stratigraphic one. The lead and zinc mineralisation is confined to side parts of synclines, in place of their interface with shrunken anticlinal folds of Famennian deposits. Strong dislocations are typical for the thicknesses underlying the mineralisation. Tectonic breccias are underlying the ore-hosting subsuites. The area of the Achisai deposit is characterized by formation overthrust, which developed between the Devonian and Carboniferous strata. In the ore Achisai and Zhamanktai ore fields, the processes of forcing, layer-by-layer and crosscutting litho-clastic flow of Frasnian and Famennian rocks, expressed in the formation of disharmonious and crest folds, inter-formation breakdowns, diapirs and other forcing structures, are widely manifested. In Karatau, wide development of northeast zones of high tectonic activity has been detected. A simple approach to identify the transverse zones is proposed using the lead geochemical field. Regional prognostic and search criteria of karst mineralisation have been defined, which allow revealing objects within the whole analyzed territory and thus allow defining in small-scale researches potentially perspective areas on account of minimal amount of initial data (structural-tectonic, lithologic-facial, etc.).
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conference
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20th International Multidisciplinary Scientific GeoConference SGEM 2020
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20th International Multidisciplinary Scientific GeoConference SGEM 2020, 18 - 24 August, 2020
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Proceedings Paper
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STEF92 Technology
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International Multidisciplinary Scientific GeoConference-SGEM
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SWS Scholarly Society; Acad Sci Czech Republ; Latvian Acad Sci; Polish Acad Sci; Russian Acad Sci; Serbian Acad Sci & Arts; Natl Acad Sci Ukraine; Natl Acad Sci Armenia; Sci Council Japan; European Acad Sci, Arts & Letters; Acad Fine Arts Zagreb Croatia; C
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335-340
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18 - 24 August, 2020
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website
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cdrom
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6852
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karst; ore district; mineralisation; search criteria; deposits
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