GEOLOGICAL CONDITIONS OF AURIGEROUS MINERALIZATION LOCALIZATION AND THE STRUCTURE OF MUSHTINSKOE ORE FIELD (KABARDINO-BALKAR REPUBLIC)

Abstract

The analysis of lithologic-structural conditions of aurigerous deposits and zones localization of Mushtinskoe ore field was carried out based on the results of large-scale geological surveying, geochemical and geophysical data. It was determined that the most important element of the ore field structure is a large flexure found out for the first time by us, which complexifies north-west limb of Mushtinskaya anticline which has a monoclinal folding. Aurigerous ore zones and deposits discovered during prospecting work are confined to the flexure knee and its joint limb. Mushtinskoe ore field is referred to the ore fields group confined to folds with flat apex which is complexified by fractures. The main factors which allow referring studied ore field to the definite structure type within the given group are multilayer localization of flat ore bodies in joists of the third order plicative structures coupled with steep ore bodies in complexified or disruptive faulting. Herewith the determinant factor is that ore - hosting flexure appears as plicative deformation only in plastic malkinskaya assise and in underlying more metamorphized bechasynskaya assise its restrictions are shown by disjunctive deformations. This fact allows considering the flexure as a block structure. That’s why Mushtinskoe ore field can be referred to the structural type, defined as sheetlike, veined and complex form ore bodies mainly in joists and partly on the limbs of block anticlines with typical vertical morphologic zonality.