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    The GIS data were obtained during digitalisation the "Geological Map of Baltic Sea bottom of 1: 200 000" issued by the Polish Geological Institute in 1989-1995. The basic content of map includes lithological diversification of the southern Baltic surface sediments and their origin. In addition, if the surface layer has a thickness of less than about 20 cm, the underlying deposits are also shown. The basis of sediment types distinction was F. P. Shepard classification (triangles classification) using Wentworth grain classes. In classification applied sand is additionally divided into four subtypes. The map area is covered by 17 grain size types and subtypes of surface sediments.

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    The dataset presents lithological types and subtypes of seabed surface sediments in Polish marine areas. The lithological classification was made based on the Shepard method, modified by the Marine Geology Department of PGI-PIB.

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    The GIS data derived from the "Geological Map of the Polish maritime areas for the purpose of so-called Additional Military Layers" issued by the Polish Geological Institute in 2012. The study on a scale of 1:200 000 shows lithological diversification of surface sediments within the Polish maritime areas according to the R. L. Folk classification (1954) distinguishing 15 different lithological types of sediments. Additionally, the areas where boulders occur in the midst of sand and gravel deposits were identified. The map was prepared according to the defence standard NO-06-A058-5.

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    Zharmonizowany zbiór danych przedstawia mapę geologiczną Bałtyku w skali 1:200 000 - osady powierzchniowe. Podstawą wyróżnienia typów osadów była klasyfikacja F.P. Sheparda. Zbiór danych zgodny z modelem INSPIRE Geology – Geologic Map.

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    Zharmonizowany zbiór danych przedstawia mapę geologiczną Bałtyku w skali 1:200 000 - osady w podłożu. Podstawą wyróżnienia typów osadów była klasyfikacja F.P. Sheparda. Zbiór danych zgodny z modelem INSPIRE Geology – Geologic Map.