Fig. 3: The difference in SAC on the example of geochemical maps; raster and point data are obtained from USGS Open-File Report200. | Nature Communications

Fig. 3: The difference in SAC on the example of geochemical maps; raster and point data are obtained from USGS Open-File Report200.

From: Challenges in data-driven geospatial modeling for environmental research and practice

Fig. 3

A There appears to be a strong positive SAC, with high concentrations of Aluminum (in red) and low concentrations (in blue) clustered together. B The Bismuth distribution map shows more scattered and less distinct clustering, indicating weaker SAC. The central and eastern regions show interspersed high and low values, suggesting a negative or weaker SAC. The image was created using the open-source Geographic Information System QGIS. Basemap is visualized from tiles by CartoDB, distributed under CC BY 3.0, based on the data from OpenStreetMap, distributed under ODbL (https://cartodb.com/basemaps). Boundaries used are taken from geoBoundaries Global Database (www.geoboundaries.org), distributed under CC BY 4.0.

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