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Chalk Marl. Above is the less argillaceous Grey Chalk. The bed varies in thickness from 0.5 to 5 metres. The stone, although fine-grained, is siliceous, and partial cementing with silica accounts for its relative hardness. It forms a distinct escarpment at several locations at the base of the
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The Stone is quarried by a family-run business, H.G Clarke and Son. This was started in 1920 by
Herbert G.Clarke. It was then passed to his son Stanley W.Clarke and is now being run by his son Angus J.Clarke. H.G Clarke and Son are the main suppliers of this rare English stone.
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and several smaller local churches. It weathers rather badly in external use, but when used as internal carved decoration, it has remained in good condition for centuries. Old decorative carving is to be found in
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Unusually among chalks, it is sufficiently strong for use as a building stone, and has been used as such in these localities, notably in
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In recent times the stone has been quarried in an area between the Knolls and the mines. This has been designated an SSSI called
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139:, where it is at its thickest. In addition to use as a building stone, in the past it was used in the manufacture of a
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The characteristic checkerboard design of many
Bedfordshire churches built with alternating chalk and flint blocks:
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Wildlife Trust for
Bedfordshire, Cambridgeshire and Northamptonshire
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north of
Totternhoe village in the county of Bedfordshire.
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68:. Geologically, it is located in the upper part of the
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270:"Totternhoe stone and flint in Hertfordshire churches"
319:Interview of H.G Clarke & Son with Anglia
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321:https://www.youtube.com/watch?v=-GCYfpJxzJg
99:The Totternhoe Stone is underlain by the
170:for the stone. The area from where the
240:Totternhoe Knolls and Totternhoe Quarry
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304:Bedfordshire and Luton Geology Group,
174:tunnels were dug is now designated a
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147:manufacture at three cement plants.
176:Site of Special Scientific Interest
350:Stratigraphy of the United Kingdom
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40:outcropping in the middle of the
16:Hard chalk outcropping in England
281:The Story of Totternhoe Quarries
283:, Church End Publishing, 2005,
203:Geological Conservation Review
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104:Chiltern ridge, notably at
92:and in the altar screen of
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355:Geography of Bedfordshire
313:Totternhoe – Clunch Stone
227:Totternhoe Chalk Quarry
180:Totternhoe Chalk Quarry
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276:, XVIII, 66-89, 1974.
186:. It is managed as a
36:is a relatively hard
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311:H.G Clarke and Son,
274:Medieval Archaeology
253:Totternhoe Stone Pit
199:Totternhoe Stone Pit
182:, as an example of
162:It was quarried at
155:The stone has been
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85:Luton parish church
345:Geology of England
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251:Natural England,
225:Natural England,
164:Totternhoe Knolls
94:Westminster Abbey
27:St Mary's (Luton)
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306:Totternhoe Stone
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238:Wildlife Trust,
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34:Totternhoe Stone
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263:Further reading
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184:chalk grassland
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127:51.89°N 0.576°W
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108:, Bedfordshire
90:St Albans Abbey
54:Buckinghamshire
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360:Chiltern Hills
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340:Building stone
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299:External links
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188:nature reserve
178:(SSSI) called
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141:hydraulic lime
62:Cambridgeshire
46:Chiltern Hills
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132:51.89; -0.576
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72:stage of the
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50:Hertfordshire
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268:E. Roberts,
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101:argillaceous
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81:Woburn Abbey
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58:Bedfordshire
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279:J. Curran,
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42:Lower Chalk
329:Categories
213:References
115:51°53′24″N
106:Totternhoe
74:Cretaceous
70:Cenomanian
335:Limestone
151:Quarrying
143:, and in
118:0°34′34″W
292:64310245
172:medieval
157:quarried
201:, as a
190:by the
66:England
44:in the
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205:site.
145:cement
168:mines
38:chalk
288:OCLC
285:OCLC
60:and
48:in
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