scholarly journals DUVALO A GEOLOGICAL PHENOMENON NEAR OHRID

2019 ◽  
Vol 6 (1) ◽  
pp. 43-56
Author(s):  
Blagoja Markoski ◽  
◽  
Milorad Jovanovski ◽  
Igor Peshevski ◽  
◽  
...  
Keyword(s):  
Geological Phenomenon

The Application of Geological Radar in Forecasting the Adverse Geological in Metamorphic Rock Area Tunnel Construction

2012 ◽  
Vol 531 ◽  
pp. 543-546
Author(s):  
Jiang Tao Xia ◽  
Cheng Zhong Yang ◽  
Shu Fang Wang
Keyword(s):  
Moisture Content ◽  
Metamorphic Rock ◽  
Water Status ◽  
Tunnel Construction ◽  
Construction Process ◽  
Tunnel Face ◽  
Geological Phenomenon ◽  
Zone Water ◽  
Bedding Joint

Accurately surveying out the fault, facture zone, water status and other bad geological phenomenon is the key problems for safety and quality in tunnel construction. Based on the different dielectric electrical differences in characteristics, applying geological radar detected the adverse geological in front of the tunnel face and analyzed. The results show the rock in front of tunnel face is broken, the bedding joint is developed, and there is jointed intensive moisture content with the local rich water. In construction process, the support should be strengthened, excavation method should be adjusted)

MEDICAL-GEOGRAPHICAL AND RECREATIONAL FEATURES OF THE TERRITORY OF THE IVANO-DOLINSKY BASALT DEPOSIT

2017 ◽  
Author(s):  
Tetіana Basiuk ◽  
◽  
Oksana Romaniv ◽  
Mariya Krynytsʹka ◽  
◽  
...  
Keyword(s):  
Negative Energy ◽  
Health Programs ◽  
Positive Energy ◽  
Educational Organizations ◽  
Number Of Factors ◽  
Permissible Levels ◽  
Geological Phenomenon

The aesthetics of the Ivano-Dolyna basalt deposit and the geological monument of nature "Basalt Pillars" (located within the deposit) has a positive emotional and psychosomatic impact on observers, especially contemplation of the petrified chronicle of the geological phenomenon, visiting the lake with emerald water. Agates of the basalt deposit emit positive energy and are able to absorb negative energy. There is a forest full of phytoncides around the quarries. The basalts of the deposit correspond to the permissible levels of state-regulated radiation parameters. This area deserves to be included in recreation and health programs, and it should be included in the routes of geotourism, not only domestic but also international. The existing and exhausted quarries of the Ivano-Dolyna basalt deposit have a health-improving effect as a cognitive and emotional enrichment during their visit. Taking into account a number of factors, we proposed the development of new types of recreational and tourist products within this area in partnership with environmental, scientific and cultural and educational organizations.

Gold Prospecting With Factorial Cokriging In The Limousin, France

1994 ◽  
Author(s):  
Hans Wackernagel ◽  
Henri Sanguinetti
Keyword(s):  
Raw Materials ◽  
Economic Value ◽  
Shear Zones ◽  
Raw Material ◽  
Strict Sense ◽  
Geological Interpretation ◽  
Geological Body ◽  
Geostatistical Methods ◽  
Geological Phenomenon

In geochemical prospecting for gold a major difficulty is that many values are below the chemical detection limit. Tracers for gold thus play an important role in the evaluation of multivariate geochemical data. In this case study we apply geostatistical methods presented in Wackernagel (1988) to multielement exploration data from a prospect near Limoges, France. The analysis relies upon a metallogenetic model by Bonnemaison and Marcoux (1987, 1990) describing auriferous mineralization in shear zones of the Limousin. The aim of geochemical exploration is to find deposits of raw materials. What is a deposit? It is a geological anomaly which has a significant average content of a given raw material and enough spatial extension to have economic value. The geological body denned by an anomaly is generally buried at a specific depth and may be detectable at the surface through indices. These indices, which we shall call superficial anomalies, are disposed in three manners: at isolated locations, along faults, and as dispersion halos. These two definitions of the word "anomaly" correspond to a vision of the geological phenomenon in its full continuity. Yet in exploration geochemistry only a discrete perception of the phenomenon is possible through samples taken along a regularly meshed grid. A superficial anomaly thus can be apprehended by one or several samples or it can escape the grip of the geochemist when it is located between the nodes of the mesh. A geochemical anomaly, in the strict sense, only exists at the nodes of the sampling grid and we shall distinguish between: a pointwise anomaly defined on a single sample, and a groupwise anomaly defined on several neighboring samples. This distinction is important both upstream, for the geological interpretation of geochemical measurements, and downstream, at the level of geostatistical manipulation of the data. It will condition an exploration strategy on the basis of the data representations used in this case study. A pointwise anomaly, i.e., a high, isolated value of the material being sought, will correspond either to a geological phenomenon of limited extent or to a well hidden deposit.

scholarly journals Geoheritage in Deltaic Environments: Classification Notes, Case Example, and Geopark Implication

Environments ◽  
2019 ◽  
Vol 6 (2) ◽  
pp. 18 ◽  
Author(s):  
Anna Mikhailenko ◽  
Dmitry Ruban
Keyword(s):  
River Delta ◽  
Anthropogenic Sources ◽  
Full Spectrum ◽  
River Deltas ◽  
Geological Features ◽  
Don River ◽  
The Rich ◽  
Ecosystem Interactions ◽  
Geological Phenomenon

River deltas boast ecosystem richness, but their efficient conservation and management require consideration of the full spectrum of natural phenomena, including those which are geological. Few specialists have explored the issue of deltaic geological heritage (geoheritage), and the relevant knowledge remains scarce and non-systematised. This paper proposes the first classification of this geoheritage. Five categories are distinguished: entire-delta geological phenomenon, delta-associated “purely” geological features, delta-associated features resulting from geology–ecosystem interactions, geological features occasional to deltas, and geoarchaeological localities in deltas. Chosen as a case example, the Don River delta in the southwestern part of Russia possesses geoheritage of these categories, except for the latter. The relevant unique geological features differ by their types and ranks. Of particular interest is the phenomenon of a self-cleaning environment which prevents mercury concentration in the soil despite pollution from natural and anthropogenic sources. The complexity of the deltaic geoheritage, its co-existence with the rich biodiversity, and the aesthetical issues make geopark creation in river deltas a sensible venture. Relevant proposals have been made for Malaysia and the Netherlands–Belgium border, and the Don River delta in Russia also presents an appropriate location for geopark creation.

scholarly journals Danger of underground erosion and sinking of the building of pumped storage energy plant in Zagorsk

2018 ◽  
Vol 170 ◽  
pp. 03007 ◽  
Author(s):  
Andrey Lavrusevich
Keyword(s):  
Probabilistic Approach ◽  
Economic Damage ◽  
Subsequent Formation ◽  
Start Up ◽  
Energy Plant ◽  
Geological Conditions ◽  
Pumped Storage ◽  
Storage Energy ◽  
Geological Phenomenon ◽  
Proper Consideration

Using the probabilistic approach, authors consider the case of development of a dangerous geological phenomenon i.e. the large underground erosive channel, induced by a mechanical suffusion during construction of the pumped storage energy plant in Zagorsk (PSEP-2). Formation of the erosive channel has led to the formation of cavities with the diameter up to 10 metres in the middle and upper-quarternary, suffusion-unstable, the fluvial-and-glacial and lake-glacial deposits of the Moscow and Dnieper moraine. Thin deposits were the bearing basis of the concrete construction of the dam of PSEP-2 in Zagorsk. The lack of proper consideration of difficult engineering-and-geological conditions and the subsequent formation of emptiness has led to the unilateral draft of the building of PSEP-2 in Zagorsk. Draft of the building of PSEP-2 in Zagorsk has detained the start-up of the building into maintenance and has resulted in significant economic damage.

scholarly journals Sagging-collapse sinkholes: simulation modelling

2020 ◽  
Vol 164 ◽  
pp. 02028
Author(s):  
Victor Khomenko
Keyword(s):  
Experimental Study ◽  
Simulation Modelling ◽  
Laboratory Simulation ◽  
Groundwater Levels ◽  
Complex Process ◽  
Saturated Sands ◽  
Geological Phenomenon

In the paper a kind of sinkholes is considered, which is typical for areas where soluble rocks are covered by clay’s layer overlapped by saturated sands. The presence in soluble rocks of non-filled cavity contacting with covering clays is necessary to the sinkhole formation, however it can be provoked not only by cavity’s enlarging but else by changes of groundwater levels. The mechanism of this complex process has been researched by its in-laboratory simulation modelling, and its results can possibility to the author to name this phenomenon as “sagging-collapse sinkholes”, because it includes sagging and collapse of clays accompanied by downward moving of sands and sometimes by their liquefaction. Modelling technology is given in the paper in detail and the conception of investigated process is offered. Except experimental study of sagging-sinkhole formation the purposes of the work was quantitative forecasting of this geological phenomenon. Forecasts have been developed that allow calculating the diameter of the expected sinkhole, particularly. An assessment of their reliability is given.

Patterned ground formation and solar radiation ground heating

1992 ◽  
Vol 438 (1903) ◽  
pp. 249-263 ◽  
Keyword(s):  
Boundary Condition ◽  
Modulation Amplitude ◽  
Patterned Ground ◽  
Onset Of Convection ◽  
Variable Permeability ◽  
Periodic Temperature ◽  
The Galerkin Method ◽  
Time Periodic ◽  
Geological Phenomenon ◽  
Critical Wavenumber

A mathematical analysis is presented for the onset of cellular convection in a saturated horizontal porous layer which is subject to a time-periodic boundary condition. Darcy’s law is used but variable permeability is allowed for and a parabolic equation of state is assumed. The modulated boundary condition produces a time-periodic temperature gradient in the layer. To obtain predictions for the onset of convection and the critical wavenumber from the linear system, we use the Galerkin method and Floquet theory. Similar predictions are obtained from the nonlinear system via the energy method. We study the effect varying frequency and modulation amplitude have on these predictions. To illustrate this we apply our analysis to the formation of polygonal ground, a geological phenomenon consisting of stone borders forming regular hexagons and soil centres. The theoretical model for patterned ground is based on the onset of convection in a saturated soil below which is a cold permafrost layer.

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