GSI Physiographic Units Level 3

Theme: Science
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Physiographic maps are cartographic representations of the broad-scale physical landscape units of a region, and physiographic units consist of physical regions showing internal uniformity with respect to one or more environmental attributes, which are clearly differentiated from neighbouring regions. This dataset presents a physiographic units map for the Republic of Ireland. The units were mapped at 1:100,000 scale in order to be represented as a cartographic digital map at 1:250,000 scale. A hierarchical classification system was derived in order to provide representations of the landscape physiography at different levels of complexity. Level 2 classification scheme differentiates between fifteen landform systems comprising, seven bedrock dominated landscape with differing texture or rugosity, which is strongly associated with the underlying bedrock type (e.g. granite bedrock evolves into rounded mountain or hill landscapes, quartzite ....) and eight sediment landscapes with differing landform signatures, which are indicative of the geological process shaping them.

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