VOLUMETRIC CHANGES DURING TECTONIC DEFORMATION AND THE IMPORTANCE OF THEIR SYSTEMATIC STUDY IN MINERAL EXPLORATION, 2024
For any exploration target (existing or predicted mineralization zone) in which formation and/or ... more For any exploration target (existing or predicted mineralization zone) in which formation and/or transformation involves simultaneous or superimposed tectonic deformations, rock volume balance assessment MUST be conducted for any local observation area and, whenever possible, for the entire exploration target. Mass transfer and rock volume change may occur at different scales: at micro-, meso-, macro-, property- and mega-scale. Missing – by mistake or disregard – any of these scales (structural levels) will lead to significant miscalculation of the volume balance.
ROCK STRESS-FACIES CLASSIFICATION BASED ON QUARTZ DEFORMATION MECHANISMS, 1992
In recent years, materials science has developed an approach of Deformation Mechanism Maps compil... more In recent years, materials science has developed an approach of Deformation Mechanism Maps compilation. DMMs make it possible to predict the behavior of materials under various thermodynamic conditions. In structural analysis, DMM principles can be used to solve the inverse problems, for instance, to reconstruct the deformation temperature or the approximate level of differential stress that the rock experienced during deformation. For these purposes, it has been suggested to use DMM of quartz (experimental data), on the one hand, and the structural data on quartz-containing rocks (geological observations), on the other. As a result of correlating and linking these data, it is proposed to distinguish σ-facies and σ-subfacies based on the observed quartz micro-structures. To any quartz-bearing rock in a specific tectonic situation a specific σ-facies can be assigned. The proposed σ -analysis method can be carried out with any degree of detail – at the micro-, meso- and macro level, up to medium-scale mapping. Stress-analysis adds one more “coordinate” to the description of the rock, which for a specific sample can be characterized by: mineral paragenesis, structural paragenesis, magnitude and direction of principal strains and differential stress level during deformation.
PHYSICS OF THE SOLID EARTH, English Translation, VOL. 31, NO. 5, DECEMBER 1995 Russian Edition: MAY 1995, 1995
Physical modeling of the Spitak earthquake (December 7, 1988) zone proves that the geographical ... more Physical modeling of the Spitak earthquake (December 7, 1988) zone proves that the geographical position of its source was, to a large extent, predetermined by the pre-existent fault-block structure of the region. Epicenters of the earthquake and its aftershocks as well as shock-induced seismic dislocations are confined mainly to the area of a structural-geological concentrator whose position depends mainly on the structure and, to a much lesser degree, on the orientation of tectonic stresses. Configuration, size, and orientation of the structural concentrator (potential seismic source) may have been predicted by means of physical modeling. In this connection, application of tectonophysical (physical) modeling to seismic zoning appears to be worthwhile and promising. The modeling scope can be broadened by examination of plastic deformations and failure. The most promising is the further analysis of primary structural-geological concentrators of stress and strain developed in a region with known structure. Configuration, dimensions, orientation of the concentrators, and regularities of their development and interaction cannot be described in terms of elementary regional geological structures. Only repetitive modeling in conjunction with variation of model properties and orientation and type of stresses applied would enable statistically valid detection of structural concentrators. It is repeatedly and reliably reproduced areas of maximum deformation and fracturing that must be recognized as major structural concentrators.
Alicanto Mining Corp. through its fully owned Colombian subsidiary Alicanto Colombia S.A.S., has ... more Alicanto Mining Corp. through its fully owned Colombian subsidiary Alicanto Colombia S.A.S., has applied for two licenses in the Rionegro Project, northwest of Bucaramanga, and encompassing disseminated gold mineralization in a marine basin. Within Rionegro II, the Client owns the exploitation area contract JG3-1392 (Mina Guayos) with 7.65 km2. Within the Rionegro applications there is an exploitation contract IH8-11141 of 4 km2 and the application license GEG-154A of 0.2 km2 located within the Mina Guayos exploitation contract that do not belong to the Client. Besides the known placers in the river, there is a clear potential for paleo placers associated to a Jurassic marine basin in the area, as well as gold associated to a sequence of Tertiary conglomerates. There is also the potential for a Carlin type of mineralization in the bituminous-rich limestones, as well as gold associated to a tonalite intrusive. All exploration permits have been obtained and are in order, and to the ex...
VOLUMETRIC CHANGES DURING TECTONIC DEFORMATION AND THE IMPORTANCE OF THEIR SYSTEMATIC STUDY IN MINERAL EXPLORATION, 2024
For any exploration target (existing or predicted mineralization zone) in which formation and/or ... more For any exploration target (existing or predicted mineralization zone) in which formation and/or transformation involves simultaneous or superimposed tectonic deformations, rock volume balance assessment MUST be conducted for any local observation area and, whenever possible, for the entire exploration target. Mass transfer and rock volume change may occur at different scales: at micro-, meso-, macro-, property- and mega-scale. Missing – by mistake or disregard – any of these scales (structural levels) will lead to significant miscalculation of the volume balance.
ROCK STRESS-FACIES CLASSIFICATION BASED ON QUARTZ DEFORMATION MECHANISMS, 1992
In recent years, materials science has developed an approach of Deformation Mechanism Maps compil... more In recent years, materials science has developed an approach of Deformation Mechanism Maps compilation. DMMs make it possible to predict the behavior of materials under various thermodynamic conditions. In structural analysis, DMM principles can be used to solve the inverse problems, for instance, to reconstruct the deformation temperature or the approximate level of differential stress that the rock experienced during deformation. For these purposes, it has been suggested to use DMM of quartz (experimental data), on the one hand, and the structural data on quartz-containing rocks (geological observations), on the other. As a result of correlating and linking these data, it is proposed to distinguish σ-facies and σ-subfacies based on the observed quartz micro-structures. To any quartz-bearing rock in a specific tectonic situation a specific σ-facies can be assigned. The proposed σ -analysis method can be carried out with any degree of detail – at the micro-, meso- and macro level, up to medium-scale mapping. Stress-analysis adds one more “coordinate” to the description of the rock, which for a specific sample can be characterized by: mineral paragenesis, structural paragenesis, magnitude and direction of principal strains and differential stress level during deformation.
PHYSICS OF THE SOLID EARTH, English Translation, VOL. 31, NO. 5, DECEMBER 1995 Russian Edition: MAY 1995, 1995
Physical modeling of the Spitak earthquake (December 7, 1988) zone proves that the geographical ... more Physical modeling of the Spitak earthquake (December 7, 1988) zone proves that the geographical position of its source was, to a large extent, predetermined by the pre-existent fault-block structure of the region. Epicenters of the earthquake and its aftershocks as well as shock-induced seismic dislocations are confined mainly to the area of a structural-geological concentrator whose position depends mainly on the structure and, to a much lesser degree, on the orientation of tectonic stresses. Configuration, size, and orientation of the structural concentrator (potential seismic source) may have been predicted by means of physical modeling. In this connection, application of tectonophysical (physical) modeling to seismic zoning appears to be worthwhile and promising. The modeling scope can be broadened by examination of plastic deformations and failure. The most promising is the further analysis of primary structural-geological concentrators of stress and strain developed in a region with known structure. Configuration, dimensions, orientation of the concentrators, and regularities of their development and interaction cannot be described in terms of elementary regional geological structures. Only repetitive modeling in conjunction with variation of model properties and orientation and type of stresses applied would enable statistically valid detection of structural concentrators. It is repeatedly and reliably reproduced areas of maximum deformation and fracturing that must be recognized as major structural concentrators.
Alicanto Mining Corp. through its fully owned Colombian subsidiary Alicanto Colombia S.A.S., has ... more Alicanto Mining Corp. through its fully owned Colombian subsidiary Alicanto Colombia S.A.S., has applied for two licenses in the Rionegro Project, northwest of Bucaramanga, and encompassing disseminated gold mineralization in a marine basin. Within Rionegro II, the Client owns the exploitation area contract JG3-1392 (Mina Guayos) with 7.65 km2. Within the Rionegro applications there is an exploitation contract IH8-11141 of 4 km2 and the application license GEG-154A of 0.2 km2 located within the Mina Guayos exploitation contract that do not belong to the Client. Besides the known placers in the river, there is a clear potential for paleo placers associated to a Jurassic marine basin in the area, as well as gold associated to a sequence of Tertiary conglomerates. There is also the potential for a Carlin type of mineralization in the bituminous-rich limestones, as well as gold associated to a tonalite intrusive. All exploration permits have been obtained and are in order, and to the ex...
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Papers by Vadim Galkine
Mass transfer and rock volume change may occur at different scales: at micro-, meso-, macro-, property- and mega-scale. Missing – by mistake or disregard – any of these scales (structural levels) will lead to significant miscalculation of the volume balance.
Mass transfer and rock volume change may occur at different scales: at micro-, meso-, macro-, property- and mega-scale. Missing – by mistake or disregard – any of these scales (structural levels) will lead to significant miscalculation of the volume balance.