scholarly journals Soils classified in the Arboretum Mlyňany, Slovakia

2018 ◽  
Vol 45 (2) ◽  
pp. 120-128
Author(s):  
Nora Polláková

Abstract Successful adaptation of introduced trees requires providing appropriate conditions for their growth and life. In this context, our study aim was a soil survey in the Arboretum Mlyňany, on the basis of which the soils could be classified. Detailed soil investigations were done at seventeen sites under dense monocultures of trees and the grassland. For each site, there was dug one soil pit, near which there were made three soil bores. Over most area of the locality, the prevailing soil-forming substrates were decalcified loess and silt, with gravelly patches, with prevailing medium soil texture, and acid to slightly acid pH. Based on the morphological features and the results concerning the physical and chemical soil properties, seven quality-degrees of soil cover were classified. The lowest-quality was recognised in Fragic Stagnic Retisol, in the highest-situated, east part of Arboretum, and also in the central part of the Ambrozy’s park under Thuja plicata, where there was discerned also low quality Albic Stagnic Luvisol. The most area east of the manor house is covered with Stagnic Cutanic Luvisol (the North American and East Asian area with Stagnic Cutanic Luvisol (Anthric)). North of the manor, on a slight slope of the North American area was found a Cutanic Luvisol (Anthric). West of the manor, the terrain evenly declines, and there has been developed Luvic Chernozem, whose cultivated form, Luvic Chernozem (Anthric), was determined in the East Asian area.

2008 ◽  
pp. 75-87
Author(s):  
Sasa Eremija

The presented results of soil study, which will be used for defining the beech forest types of management unit 'Dubicka Gora' on Mt. Manjaca, are the basis for solving a series of current tasks of forestry profession. Relief and chemical nature of limestone are the main factors of the soil cover differentiation (Knezevic, Kosanin, 2004.). The results of physical and chemical soil properties are shown and its taxonomy is determined. Forest cover is represented by heterogeneous units-forest combinations. Four basic soil types are defined on the basis of detailed field and laboratory research: rendzina on dolomite, chernozem on limestone, brown soil on limestone, illimerised soil on limestone and dolomite.


2019 ◽  
Author(s):  
Ricardo A. Valls

The Padre Antonio Project is located in western Guatemala, specifically, east of the village of Santa Eulalia in the Huehuetenango Department. This property is held by Creso Resources Inc., under the Exploration License No. LEXR-702. The property has an area of 24 km2 in rugged terrain, which range in elevation between 2,000 and 2,500 meters (AMSL). The main access to the property from Guatemala City is through 246 km of reasonably kept highway CA-1 to the city of Huehuetenango. From Huehuetenango one travels north for another 87 kms to the village of Santa Eulalia, passing through Chiantla, La Capellanía, San Juan Ixcoy and Soloma. Temperatures are pleasant through most the year ranging from 25 to 30º C during the summer and 15 to 25º C during the winter months. There is little mining tradition in the Santa Eulalia area. An Italian immigrant turned prospector discovered the Padre Antonio Project after he organized a stream sediment sampling of the Tziquiná river that crosses the area. Near the highest copper value samples, located almost at the centre of the license, Mr. Bruno Montuori then organized the digging of a 7 meters pit that found massive chalcopyrite and abundant secondary copper minerals. Creso Resources Inc of Montreal, Canada, bought the mining rights from Mr. Mortuori early in 2005. In mid 2005 Creso completed a self potential (S.P.) survey over one square kilometer around the discovery pit and a soil sampling survey for the same area. The SP survey discovered four vertical conductors around 70 meters in diameters and at least 75 meters in depth. The geochemical soil survey confirmed the S.P. results. Based on these results Creso has initially extended the original area of license to an exploration license of 70 square kilometers and one reconnaissance licenses of 504 square kilometers. The regional geology of the Huehuetenango area belongs to that of the North American Plate in spite that it is bounded, to the south, by a sequence of active faults (Polochic, Río Negro, etc.) that represent the North American – Caribbean Plate boundary. The oldest rocks in the region are metamorphic Paleozoic schist of the Chuacús Series, Pelagic shales and mudstones are then deposited over the metamorphic basement during the Carboniferous and massive carbonates are subsequently deposited over the pelagic sediments during the Permian. At the end of the Permian, there is a hiatus of approximately 51 million years. Uplifting and possibly the first interplate tectonism resulted in the abduction of the oldest ophiolitic belt (Huehuetenango ophiolites) of the region. During the Upper Jurassic more carbonates of the Todos Santos Fm. are deposited. The Upper Cretaceous, and Lower Tertiary periods are tectonically very active with the deposition of clastic and volcanoclastic deposits and the intrusion of granitic rocks. Also during these periods, occurs the emplacement of several of the ophilitic complexes of Central Guatemala. Locally, sandstones with interbedded of limestone are in fault contact with slates to the north of the Tziquiná River which occupies the trace of the fault. The discovery mineralization is contained entirely within the volcano-sedimentary unit. Our working model proposes the existence of a sedimentary type deposit in the area. The vertical pipe-like zones of conductivity discovered by the self-potential (SP) survey done by Creso, are interpreted as mineralized vertical breccias pipes controlled by the presence of a reduction environment and organic material. The soil survey done at 100x100 m spacing in the previously cut geophysical grid and a Spatiotemporal Geochemical Hydrocarbons (SGH) testing of the same area was carried out. The soil survey confirmed the presence of localized anomalous copper zones. These anomalous Cu zones are however displaced downslope which is normal in steep tropical weathering environments. The limited exploration work done at the Santa Eulalia region and the preliminary work done by Creso Resources does not entitle us to speak of quantities, resource, much less reserves, however the evidence thus far obtained, points out towards what may result in a very interesting discovery of a new mining camp. It is recommended that the soil sampling grid be extended along strike to search for further high copper soil anomalies. Also, an IP (dipole-dipole?) survey may help to further define the lower configuration of the vertical zones of conductivities and one “discovery” diamond drill holes should be drill in each of the zones at different elevation to test the ore shoots or breccias pipe interpretation.


2016 ◽  
Author(s):  
Min Huang ◽  
Gregory R. Carmichael ◽  
R. Bradley Pierce ◽  
Duseong S. Jo ◽  
Rokjin J. Park ◽  
...  

Abstract. The recent update on the US National Ambient Air Quality Standards of the ground-level ozone (O3) can benefit from a better understanding of its source contributions in different US regions during recent years. In the Hemispheric Transport of Air Pollution experiment Phase 1 (HTAP1), various global models were used to determine the O3 source-receptor relationships among three continents in the North Hemisphere in 2001. In support of the HTAP Phase 2 (HTAP2) experiment that studies more recent years and involves higher-resolution global models and regional models' participation, we conduct a number of regional scale Sulfur Transport and dEposition Model (STEM) air quality base and sensitivity simulations over North America during May–June 2010. The STEM top and lateral chemical boundary conditions were downscaled from three global chemical transport models' (i.e., GEOS-Chem, RAQMS, and ECMWF C-IFS) base and sensitivity simulations (in which the East Asian anthropogenic emissions were reduced by 20 %). We perform analyses not only on large spatial/temporal scales relative to the HTAP1 works, but also on subcontiental- and event-scale that are more relevant to the US air quality management. The differences between STEM surface O3 sensitivities (including the 24 h mean and the US policy-relevant maximum daily 8 h average (MDA8) metric averaged throughout the study period and during a selected pollution transport event) and its corresponding boundary condition model's are often smaller than those among its boundary condition models. The STEM sensitivities are also compared with the mean sensitivities estimated by multi-global models, which are higher than the HTAP1 reported 2001 conditions, as well as the 2001–2005 conditions studied using the tagged tracer approach. This indicates the increasing impacts of the East Asian anthropogenic pollution on North America during 2001–2010. The GEOS-Chem sensitivities indicate that the East Asian anthropogenic NOx emissions matter more than the other East Asian O3 precursors to the North American O3, qualitatively consistent with previous adjoint sensitivity calculations. An additional STEM simulation was performed in which the boundary conditions were downscaled from a global RAQMS simulation without East Asian anthropogenic emissions, to assess the scalability of O3 sensitivities to the size of the emission perturbation. The scalability is spatially varying, and the full source contribution obtained by linearly scaling the North American regional mean O3 sensitivity to the 20 % reduction in the East Asian emissions may be underestimated. Satellite NO2 (KNMI OMI) and O3 (TES, JPL-IASI, OMI, MLS, and AIRS) products help detect pollution episodes, quantify or/and reduce the uncertainties in the bottom-up NOx emissions and the model transported background O3. Based on model calculations and satellite/surface observations during a selected event, we show the different influences from stratospheric O3 intrusions along with the transported East Asian pollution on O3 in the western and the eastern US. Future directions of using satellite data in air quality research are also suggested.


2006 ◽  
Vol 175 (4S) ◽  
pp. 511-512
Author(s):  
David G. McLeod ◽  
Ira Klimberg ◽  
Donald Gleason ◽  
Gerald Chodak ◽  
Thomas Morris ◽  
...  

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