EVALUATION OF METALLOGENIC FACTORS ON THE BASIS OF DIGITIZING AND RE-INTERPRETATION OF DATA ANALOG AEROMAGNETIC IMAGES OF THE EXAMPLE MALKA-MULTINSKOGO ORE UNIT (NORTH CAUCASUS)

Abstract

Digitization of data of analog aeromagnetic survey of the late 60-ies of the last century was carried out, which made it possible to apply digital methods for processing large amounts of data on the basis of GIS technologies. We focused on two tasks - getting numeric array describing ∆of The study area and the allocation of multi-scale anomaly field ∆TA (local, areal and regional), due to geological features that represent metallogenic factors (rodegenerative Intrusive body, retopologise, rodorazresheniye and ore localizing faults, signs of lithological control of mineralization). As a result, the anomalies of the regional and area (medium-scale) background of the magnetic field and local anomalies are identified. This allowed to clarify the geological structure and metallogenic prospects of the territory. In particular, by the peculiarities of local anomalies and area background distribution, the continuation of the Malkin granitoid massif under the thickness of metamorphic shales further to the North-East was revealed and traced, it was found that the most promising part of the Malka-Mushta ore node is located in the roof of the Malka granite massif, at the place of its sharp immersion in the steep ore-producing fault of the North-Western strike. The isolation of local magnetic field anomalies allowed to reveal non-surface (blind) bodies of gabbro-diabases and gabbro-diorites of the Khasaut Intrusive complex on the right Bank of the Malka-Mushta ore node, which extends the prospects for the detection of blind ore bodies.