In classical approach to geochemical mapping, analytical data of chemical element are presented as maps, in which the picture is a result of interpolation of the contents at a given point.

In this project we used a different approach, where geochemical data are oriented on object to which they relate - in this case on geology. It is based on a combination of interpolation from the first stage and aggregation results of this interpolation within the geological units.

As a result of aggregation to the geological unit the average or median of content of the chemical element (it depends on distribution function of the chemical element) is assigned.

This approach to geochemical data processing include spatial variability content of the chemical element within interpolation and spatial demarcation of the content of chemical elements by the borders of different geological units within the aggregation.

The final step in creating maps was the classification assigned by the aggregation result of chemical element to a specific geological unit. Classes are formed based on the statistical distribution of the content of the element.

On the thus obtained maps, from the geological point of view, the picture is clearer and easier to interpret.

In short by the method described above it was made 17 maps that have been made available via WMS (you can open it with any map browser that supports this way of serving data).

WMS services direct addresses for each map:

http://giscbdg.pgi.gov.pl/arcgis/services/geochemia/geochemia_As/MapServer/WMSServer

http://giscbdg.pgi.gov.pl/arcgis/services/geochemia/geochemia_Ba/MapServer/WMSServer

http://giscbdg.pgi.gov.pl/arcgis/services/geochemia/geochemia_Ca/MapServer/WMSServer

http://giscbdg.pgi.gov.pl/arcgis/services/geochemia/geochemia_Cd/MapServer/WMSServer

http://giscbdg.pgi.gov.pl/arcgis/services/geochemia/geochemia_Co/MapServer/WMSServer

http://giscbdg.pgi.gov.pl/arcgis/services/geochemia/geochemia_Cr/MapServer/WMSServer

http://giscbdg.pgi.gov.pl/arcgis/services/geochemia/geochemia_Cu/MapServer/WMSServer

http://giscbdg.pgi.gov.pl/arcgis/services/geochemia/geochemia_Fe/MapServer/WMSServer

http://giscbdg.pgi.gov.pl/arcgis/services/geochemia/geochemia_Mg/MapServer/WMSServer

http://giscbdg.pgi.gov.pl/arcgis/services/geochemia/geochemia_Mn/MapServer/WMSServer

http://giscbdg.pgi.gov.pl/arcgis/services/geochemia/geochemia_Ni/MapServer/WMSServer

http://giscbdg.pgi.gov.pl/arcgis/services/geochemia/geochemia_P/MapServer/WMSServer

http://giscbdg.pgi.gov.pl/arcgis/services/geochemia/geochemia_Pb/MapServer/WMSServer

http://giscbdg.pgi.gov.pl/arcgis/services/geochemia/geochemia_S/MapServer/WMSServer

http://giscbdg.pgi.gov.pl/arcgis/services/geochemia/geochemia_Sr/MapServer/WMSServer

http://giscbdg.pgi.gov.pl/arcgis/services/geochemia/geochemia_Ti/MapServer/WMSServer

http://giscbdg.pgi.gov.pl/arcgis/services/geochemia/geochemia_V/MapServer/WMSServer

http://giscbdg.pgi.gov.pl/arcgis/services/geochemia/geochemia_Zn/MapServer/WMSServer

author: Tomasz Gliwicz, Ph. D.