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Superficial deposits 1:20 000 / 1:50 000 include material / data for land use planning, for the mapping and inventory of the natural resources as well as for environmental management and for scientific research. The main mapping scale has been 1:10 000. The data contains a sediment as a basal deposit at a depth of one metre (modified RT-classification). The minimum size of the basal deposit polygon is two hectares, with islands, mire and field enclosures, as well as geologically significant sites as an exception. The 0.4 - 0.9 m thick layers are described as overlying the basal deposit. The minimum polygon size of the overlying deposit is usually four hectares. Besides the deposits Quaternary geological formations formed in different ways, such as eskers and hummocky moraines, are described in the data. Other mapping sites such dunes and raised beaches are shown as line data. The layer files of Finnish and English language are included in the product.
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In regard to product series, such as Detailed aerogeophysical survey, or Aerogeophysical low altitude maps at 1:20 000 scale, the intended areas or map sheets must first be selected with the "Area selection" tool in the map window and then be transferred with the "Download" or "Buy" button to the Shopping Cart or with "Order" buttom to the Order request form.