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Hobbs Quarry, Longhope () is a geological and biological Site of Special Scientific Interest in Gloucestershire, notified in 1966.〔(Natural England SSSI information on the citation )〕〔(Forest of Dean District Local Plan Review, adopted November 2005, Appendix D 'Nature Conservation Site Designations Within the Forest of Dean District', Sites of Special Scientific Interest )〕 It is situated miday between Longhope and Dursley Cross in the Forest of Dean. Adjacent woods are Kiln Wood and Coleman's Wood. The site is managed by the Gloucestershire Wildlife Trust.〔Kelham, A, Sanderson, J, Doe, J, Edgeley-Smith, M, et al, 1979, 1990, 2002 editions, 'Nature Reserves of the Gloucestershire Trust for Nature Conservation/Gloucestershire Wildlife Trust'〕 The site is listed in the 'Forest of Dean Local Plan Review' as a Key Wildlife Site (KWS).〔(Forest of Dean District Local Plan Review, adopted November 2005, Appendix D 'Nature Conservation Site Designations Within the Forest of Dean District', Key Wildlife Sites )〕 The quarry is known for its geological exposures, and was originally about a mile long extending into Kiln Wood, which is to the north of this reserve. The southernmost part of the quarry was used as a public landfill site and destroyed and the northernmost part became under threat from fly-tipping. The Nature Conservancy Council designated the site an SSSI and unertook rehabilitation work. The Gloucestershire Wildlife Trust purchased the site in 1981. The Forest of Dean District Council provided grant aid.〔 ==History== The quarry was worked from the seventeenth century to the end of the nineteenth century at least. It is depicted on the OS map of 1889. It produced burning-lime and there is an old kiln standing at the southern end of the reserve. Classic exposures of Silurian Wenlock limestone were left once quarrying ceased. The series of algal and coral reefs have major visual impact and are called 'ballstones' because they have a circular cross-section. Drapes of bedded limestone overlay the reefs and were formed about 400 million years ago when the region was under warm seas. The rocks contain a diversity of fossils, referred to in scientific publications from the mid-nineteenth century. The fossils include corals, brachipods, trilobites and crinoids. This is an important educational location for geology students.〔〔'Hobbs Quarry Nature Reserve – Beautiful woodland walk among Silurian coral reefs', (undated), Gloucestershire Wildlife Trust〕 Lime was used for improve Dean soils which are acid, and for making mortar. When limestone was burned using a kiln, dangerous quicklime is produced. This slaked with water makes hydrated lime which can be transported safely.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Hobbs Quarry SSSI, Longhope」の詳細全文を読む スポンサード リンク
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