Contribution of Geophysics to Geological Models
…from the 2009 Three-Dimensional Geologic Mapping Workshop held by the Illinois State Geological Survey…
Helga Wiederhold, Reinhard Kirsch, and Wolfgang Scheer
“The near surface underground of the North European Basin (Belgium, The Netherlands, parts of Germany, Denmark, and Poland) is mainly composed of gravel, sand, till, and clay of Quaternary and Tertiary origin. Although originally more or less horizontally layered, disturbances of the layer sequence by glacial tectonics (especially deep erosional valleys) and uplift of salt domes are frequent (Figure 1). This can lead to complicated underground structures which make the correlation between boreholes difficult or impossible. Therefore, geophysical measurements are an essential tool for the construction of geological models.”
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