Distribution of mineral raw materials in the German North Sea – potential rinsing sand deposits in the Lower Saxony coastal region Drill data evaluation up to 3m GOK (WMS service)

Description

The map Distribution of mineral resources in the German North Sea – potential rinse sand deposits in the Lower Saxony coastal region provides information on the distribution of sediments classified as suitable for extraction for coastal protection purposes. The background for the designation of the primarily medium-sized deposits is the continuously high demand for this mineral raw material, which results from the long-term increasing burden on the East Frisian Islands in the course of secular sea level rise and potential effects of climate change. The maps cover the area north of the East Frisian Islands, which is bounded by the -8 m NN Isobathe in the south and the traffic separation area in the north. The depth of statement varies between the evaluations of a possible area extraction up to 3 m depth under GOK and the option for depth extraction up to 20 m under GOK. Drilling data were evaluated at depth intervals of 0-3 m, 0-10 m and 0-20 m. The legend comprises 2 classes and identifies potential occurrences of sand (general) in the mentioned depth ranges and, if evaluable, specifies the desired grain size spectrum from fine to medium sand. In addition, for the seabed surface, the median of the particle size distribution of samples taken by area (grid) is shown in 3 classes of 150-300 μm. The maps are based on sediment samples from the seabed surface to a depth of 20 cm as well as strata descriptions of boreholes that were available in the Lower Saxony coastal region until June 2011. The basic data are stored in databases at the BSH and LBEG, and data collected in the future will be integrated into them. Loose sediments are classified according to their grain sizes according to DIN EN 14688-1: clay (grain size <0.002 mm); silt (grain size 0.002 to 0.063 mm); sand (grain size 0.063 to 2.0 mm); gravel (grain size 2.0 to 63 mm); Stones and blocks (>63 mm). On the basis of the particle size analyses carried out in the laboratory and the layer descriptions from boreholes, the sediments are classified for corresponding questions.

Resources

Name Format Description Link
0 https://nibis.lbeg.de/net3/public/ogc.ashx?NodeId=2345&Service=WMS&Request=GetCapabilities&

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