Strukturně-geologické nástroje a metody řešení geologické stavby pomocí nového doplňku GeoSol v ArcGIS Pro
Structural-geological tools and methods for analyzing geological structures using the new ArcGIS Pro add-in (GeoSol)
Roč.32,č.1-2(2025)
For understanding the structure of the Earth‘s crust, field surveys and the collection of localized data are crucial, such as compass measurements of oriented structures, detecting lithological boundaries and distinguishing types of lithology. In addition to these traditional methods, a detailed digital elevation model (DEM) created through airborne laser scanning is becoming a new foundation and guide for understanding geological structures, with ever-increasing levels of detail. To enable the analysis of these structural elements taking advantage of geographical information systems (GIS) and using established structural geology methods (such as orientation analysis, geological cross-section construction, down-plunge method, or three-point method), new tools were developed within the GeoSol add-in for ArcGIS Pro. GeoSol uses the position of three points belonging to a single lithological boundary or fault plane to calculate the plane‘s orientation (dip direction and dip) and sketches the intersection line of this plane with the DEM. Slope and shaded (illuminated) models derived from DEM are helpful to determine the position of outcrops, but also subtler morphological manifestations of layering with varying erosion resistence, which can reveal the presence of tectonic processes such as folds or faults. GeoSol can also construct cross sections and intersect structural planes with it. Also other available surface or borehole
data can be projected on the plane of cross section.
The GeoSol add-in thus combines the advantages of GIS with structural analysis methods, facilitating the construction of geological maps.
Morphotectonic analysis; orientation analysis; ArcGIS Pro; digital elevation model; „down-plunge“ projection; „three-points“ method; geological cross-sections
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