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The preglacial series deposited by the Nysa Kłodzka river has a much wider extent in the Sudetic Foreland than hitherto supposed. It can be found in a 5-10 km wide belt near margin of the Sudetes Mts and an over 60 km wide belt in the Sudetic Foreland and the adjacent part of the Silesian Lowland. This series is porphyry-bearing and it is made up of four lithostratigraphic units that differ in their...
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