| Title | Methodology for portraying 3D structure using ArcGIS: a test case from the southern Canadian Rocky Mountains, British Columbia and Alberta |
| Download | Downloads |
| Author | Thapa, P; McMechan, M E |
| Source | Geological Survey of Canada, Open File 8576, 2019, 17 pages, https://doi.org/10.4095/314941 (Open Access) |
| Year | 2019 |
| Publisher | Natural Resources Canada |
| Document | open file |
| Lang. | English |
| Media | on-line; digital |
| File format | readme
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| File format | pdf (Adobe® Reader®); rtf; dbf (ESRI® ArcGIS 10.5.1); shp (ESRI® ArcGIS 10.5.1); xml (ESRI® ArcGIS 10.5.1); adf (ESRI® ArcGIS 10.5.1); avi (video) |
| Province | British Columbia |
| NTS | 82J/11; 82J/12; 82J/13; 82J/14 |
| Area | Mount Assiniboine; Cross River; Mitchell River |
| Lat/Long WENS | -115.8833 -115.3167 51.0000 50.5333 |
| Subjects | structural geology; economic geology; Science and Technology; bedrock geology; structural features; faults; faults, normal; faults, thrust; folds; synclines; anticlines; structural interpretations;
structural analysis; software; modelling; mines; mineral potential; geological evolution; Canadian Cordillera; Cathedral Formation; Kickinghorse Rim Deposit; methodology; geological mapping techniques; 3-D visualization; ESRI ArcGIS; georeferencing;
vector data; raster data; digital elevation models; data conversion; data processing; structural geometry; geological contacts |
| Illustrations | location maps; geoscientific sketch maps; screen captures; cross-sections |
| Program | Frontier basin analysis, Geoscience for New Energy Supply (GNES) |
| Released | 2019 08 15 |
| Abstract | In the study of structural geology, a three-dimensional (3D) geologic cross-section plays an important role in the understanding of subsurface structures and their geometric relationships. This Open
File report describes the procedural workflow followed to construct 3D cross-sections entirely within the ESRI ArcGIS software suit. The ArcGIS components involved include ArcMap, ArcScene and ArcCatalog (version 10.5.1), and extensions comprising 3D
Analyst, Spatial Analyst and a third-party ArcMap plugin called Xacto Section Tools that was developed by the Illinois State Geological Survey. ArcGIS allows the processing and analysis of vector (e.g. geological surface, faults, cross-section lines,
etc.) and raster data (digital elevation model (DEM), surface) to create 3D cross-sections and fence diagrams with a high degree of spatial accuracy. This method utilized surface information from digital bedrock geological maps, 2D structural
cross-sections and a DEM derived from the geological map contours. Shapefiles of 3D cross-sections, the bedrock geological map, style file for cross-sections and geological map, DEM, cross-section lines, and fault data are included in this report for
visualization in ArcGIS software. Three movie files (.avi) are included for viewing without ArcGIS software. The methodology successfully allowed the 3D viewing of the structural geometry of the study area and should be applicable to for other
geographic locations and geologic settings.
Contact surfaces consistent with the map and cross-section data were readily created using ArcGIS in areas with minimal faulting. However, in areas with structural overlap caused by reverse faulting
significant segmentation of the input data was required to generate meaningful surfaces. |
| Summary | (Plain Language Summary, not published)
This report describes a procedural workflow followed to portray 3D cross-sections entirely within the ESRI ArcGIS software suit. ArcGIS allows the
processing and analysis of vector (e.g. geological surface, faults, cross section lines, etc.) and raster data (digital elevation model (DEM), surface) tocreate 3D cross sections and, fence diagrams with a high degree of spatial accuracy. This method
utilized surface information from digital bedrock geological maps, 2D structural cross sections and a DEM derived from the map contours. Shapefiles of 3D cross sections, the bedrock geological map, digital elevation model, cross section lines, and
faults data are included in this report for visualization in ArcGis software. Three movie files (avi) are included for viewing with our ArcGis software. The methodology successfully allowed the 3D viewing of the structural geometry of the study
area and should be applicable to for other geographic locations and geologic settings. |
| GEOSCAN ID | 314941 |
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