Talk:Geology of the South Downs National Park

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I hope others will improve on what I've started here. It is the case that a simple geological map accompanying the article would benefit understanding. Meanwhile those wanting to view the geology of this and other UK National Parks for further edits to the article etc can visit the British Geological Survey’s ‘GeoIndex Onshore’ map-viewer at https://mapapps2.bgs.ac.uk/geoindex/home.html - there are a considerable number of data layers available to click on or off but look for the ‘mineral planning authorities’ one in the right hand column of the drop down list. Since each national park authority in England and Wales is the mineral planning authority, that gives you the boundary of the national park. This can be used in conjunction with whichever geological data layers are chosen for display. Note that the relatively recent expansions of the Lake District and Yorkshire Dales NPs are not yet reflected in that data, nor is the extent of the Cairngorms NP visible through this means. A further data layer – ‘Natural England National Park’ is available towards the bottom of the r.h. column in the drop-down list but only relates to NPs in England (and does include the expanded areas of the Lakes and Dales). Using this data layer (which presents as coloured polygons without outlines), adjustments need to be made to the transparency of the layers so that both the bedrock geology (for example) and the NP shape are both visible. thanks Geopersona (talk) 17:11, 22 April 2022 (UTC)