Sediment distribution German North Sea - classification according to FOLK (1954, 1974)
Description
The map on a scale of 1 : 250,000 represents the sediment distribution according to FOLK (1954, 1974). This is based on a percentage distribution of the three summarized grain size fractions gravel & cobbles, sand and silt & clay developed by FOLK (1974), which are subdivided into 15 classes in a triangular diagram. The map representation is based on sediment samples from the seafloor surface to a depth of 0.2 m and stratigraphic logs from boreholes at 0.2 m depth, which were available in the German North Sea area until November 2012. The basic data are stored in databases at the BSH and LBEG, and data collected in the future will be integrated into them. The map shows areas of similar unconsolidated sediments at the seafloor surface. Unconsolidated sediments are classified according to their grain size 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); Cobbles and boulders (>63 mm). Based on the grain size analyses carried out in the laboratory and the layer descriptions from boreholes, grain size ranges are summarized for corresponding questions and then classified.
Resources
| Name |
Format |
Description |
Link |
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61 |
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https://download.bgr.de/bgr/geologie/GPDN-Sedimentverteilung/shp/FOLK.zip |
Tags
- geopotenzial-deutsche-nordsee
- geologie
- geoldg
- gpdn