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Middleton Quarry : ウィキペディア英語版 | Middleton Quarry
Middleton Quarry is a Site of Special Scientific Interest in the Teesdale district of west County Durham, England. It is a disused quarry, from which Whin Sill stone was formerly excavated. It lies just south of the River Tees, opposite the village of Middleton-in-Teesdale on the river's northern bank. Since mineral working ceased, the quarry has been re-colonised by a variety of vegetation types. On the quarry floor, natural seepage has given rise to areas of open water, which grade into a variety of soligenous mire and fen vegetation types. Where a skeletal soil layer has developed on the quarry floor and spoil heaps, patches of grassland occur, with species characteristic of base-rich soils, such as quaking grass, ''Briza media'', and limestone bedstraw, ''Galium sterneri''. On shallow slopes, this gives way to a neutral grassland characterised by false oat-grass, ''Arrhenatherum elatius'', and Yorkshire fog, ''Holcus lanatus''. Above the quarry, this is replaced by acid grassland, in which wavy hair-grass, ''Deschampsia flexuosa'', is dominant. The quarry supports a moth fauna which includes at least two species, the northern rustic, ''Standfussiana lucernea'', and the anomalous wainscot, ''Stilbia anomala'', that are rare in north-east England. ==References==
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