Scholarly record
SPECIAL ASPECTS OF LOW-DISTURBED SUBSURFACE SITES ALLOCATION IN SOUTH-EASTERN SELVAGE OF FENNOSCANDIAN SHIELD
Abstract
High qualitative and quantitative requirements for dimension stone on the building materials market make producers update the methods used currently to assess natural fracturing in areas of interest at various levels when prospecting potential zones. As most well-exposed areas are already being quarried, new areas are most efficiently prospected using statistical and mining-geometric methods and the data obtained are analyzed. Locating dimension stone prospects is a multi-stage process. Analysis of large areas performed for this purpose may require considerable resources. A method for integrated assessment of rock massifs, developed by the authors and based on analysis of the spatial orientation of the inequidimensional fracturing of the geo-setting, is expected to reduce prospecting costs and expenses and to save time. This method was efficiently used earlier for forecasting prospects in individual intrusive massifs. More recently, the method was employed as a version of assessment of correlation of mega- and macrofracturing for assessment of a large area composed of different-aged igneous and metamorphic complexes on the Fennoscandian Shield. The quantitative indices of fracturing on mega- and macro-levels, used for analysis of the monolithic character of a massif, were estimated and verified over an area of 2500 km2. Analysis of the mega- and macro-fracturing of the entire study area and the sites around active building stone quarries has revealed some correlations of their spatial orientation. Our conclusions regarding the dimension or building stone potential of the prospects located were drawn, based on these data. The results of our studies have led us to conclude that the method proposed could be used in large areas in Precambrian basement scarps, regardless of the rock complex they are part of. The study of the formation pattern of mega- and macro-fractures in rock massifs is an efficient tool for assessment and recognition of the types of building stone at prospecting and exploration stages.
Publication Impact Profile
Publication details
References8
Kolodyazhny S.Yu. Paleoproterozoic structural-kinematic evolution of the South-East Baltic Shield/Proceedings of the Geological Institute of RAS, Russia, issue 572, Moscow. GEOS. 2006. 332 p.
Morozov Y.A., The role of transpression in the structural evolution of the Svecokarelides in the Baltic Shield/Geotectonics, Russia, 33 (4), pp 302-313, 1999.
Khazov R.A., Sharov N.V., Isanina E.V. Deep structure and metallogeny of the Lake Ladoga area (Priladozhye)/Geology and natural resources of Karelia, Russia, issue 7, pp 55-74, 2004.
Lukashov A.D. Morphological structure of the Northern Lake Ladoga region/Geomorphology and Quaternary geology of the North European region of the USSR, Russia, 1976, 108 p;
AgibalovA.O., Zaytsev V.A., Sentsov A.A., Devyatkina A.S. Assessment of the influence of modern crustal movements and the recently activated Precambrian structural plan on the relief of the Lake Ladoga region (the southeastern Baltic Shield)/Geodynamics and tectonophysics, Russia, vol. 8/issue 4, pp 791-807, 2017.
Sim L.A. Study of tectonic stresses using geological indicators (methods, results, recommendations)/Izvestia VUZ, Geology and prospecting, Russia, No. 10, pp 3-22, 1991.
Rebetsky Yu.L., Sim L.A., Marinin A.V. From slickensides to tectonic stresses/Russia, Moscow, GEOS, 234 p, 2017.
Ivanov A.A., Shekov V.A., Myasnikova O.V. Megafracturing of igneous rocks as an integral feature of their monolithic pattern/Science and technologies in geology. 17th International multi-disciplinary scientific geo-conference, Bulgaria, vol. 17/issue 11, pp 315-320, 2017.
View or Download full articleAccess options
SWS access login
Login as SWS Scientific CommitteeLogin as SWS Scientific PartnerLogin as SWS AuthorAuthors and approved SWS contributors will read and export their own linked papers after identity matching by SWS profile, email and SGEM GlobalID.
For librarian assistance: [email protected]
Purchase Instant Access
- Article can be downloaded after successful payment.
- Article may be used according to SWS library access terms.
- Article cannot be redistributed.
