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Calcareous sinter

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The build-up of calc-sinter material in the Eifel Aqueduct was commercially exploited in the 11th and 12th centuries. With deposits up to 30 centimetres (12 in) thick, the material was cut into vertical columns of polished brown rock with impressive layered patterns, which made it much in demand
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Pedley (1990) suggests the term be abandoned in favour of tufa for ambient temperature deposits. This avoids any potential confusion with siliceous sinter and prevents deposits formed in different environmental conditions (hot spring deposits, cold spring deposits and speleothems are all lumped
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were unaware of its origins in the aqueduct until 2011. Such large-scale use as the cloisters around a cathedral quadrangle needed many hundreds of columns, which must have been supplied by a well-organised extraction and transport operation. The Eifel deposits, have also been identified at
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Calcareous sinter is characterised by laminations of prismatic crystals growing perpendicular to the substrate; laminations are separated by thin layers of microcrystalline carbonate. Calcareous sinter is porous due to the calcareous crystals enclosing many small cavities.
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by cathedral builders across large parts of central Europe and beyond. In England it was used to provide polychromy, contrasting with the pale limestone favoured by
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as well as the Infirmary Cloister, Chapter House windows, Anselm Chapel door and the Treasury gateway at Canterbury.
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C. Wilson (2015). "Canterbury Cathedral's Mystery "Marble": A Double Imposture Unmasked'". In P. Fergusson (ed.).
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English Cathedrals. The stone was for many years known as 'Onyx Marble' despite being very obviously neither
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are absent, consequently porosity is very low. Exclusion of species is due either to high temperature (
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Pedley, H.M. 1990. Classification and environmental models of cool freshwater tufas.
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R.B. Harris (2019). "Reconstructing the Romanesque Cloister of Norwich Cathedral".
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together under the term sinter) from being amalgamated into one group.
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Calcium Carbonate: From the Cretaceous Period Into the 21st Century
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Tegethoff, F. Wolfgang; Rohleder, Johannes; Kroker, Evelyn (2001).
92: 197: 30:. Deposits are characterised by low porosity and well-developed 223: 462:. Canterbury Historical & Archaeological Society (CHAS). 103:, which decreases the solubility of calcite/aragonite. (See 219: 72: 64: 179:
Deposits of several thousand years of calc sinter (
99:. Precipitation is brought about by degassing of CO 386:Journal of the British Archaeological Association 471: 353:Canterbury Cathedral Priory in the Age of Becket 192: 453: 379: 418: 365:: CS1 maint: location missing publisher ( 350: 355:. New Haven and London. pp. 156–60. 196: 427:. Cambridge University Press: 133–159. 472: 382:"The Romanesque Cloister in England" 16:Freshwater calcium carbonate deposit 110: 42:sinter should not be confused with 13: 226:. Those studying the stonework at 147:and all kinds of water facilities. 119:, Turkey – terraces of travertine. 14: 506: 172: 152: 136: 91:Deposits are formed from either 398:10.1179/0068128815Z.00000000038 201:Column of calc-sinter from the 86: 447: 412: 373: 344: 317: 299: 285: 273:Microfacies of Carbonate Rocks 265: 143:Pure calc sinter, typical for 125:, California - towers of tufa. 1: 460:canterbury-archaeology.org.uk 258: 456:"calc-sinter or Onyx Marble" 7: 246: 193:Medieval extraction and use 49: 10: 511: 275:. Germany: Spring-Verlag. 129: 34:, often forming crusts or 433:10.1017/S0003581519000118 167:, clogged by fine sinter. 421:The Antiquaries Journal 293:"Sinter | mineral" 75:) or absence of light ( 26:deposit, also known as 210: 185:Bridgeport, California 454:Geoff Downer (2019). 380:John McNeill (2015). 200: 235:and in the now lost 228:Canterbury Cathedral 490:Inorganic chemistry 308:Sedimentary Geology 485:Carbonate minerals 211: 159:Roman aqueduct in 495:Sedimentary rocks 271:FlĂĽgel, E. 2004. 209:church in Germany 161:Germania Inferior 105:tufa/geochemistry 24:calcium carbonate 20:Calcareous sinter 502: 480:Calcium minerals 464: 463: 451: 445: 444: 416: 410: 409: 377: 371: 370: 364: 356: 348: 342: 341: 321: 315: 303: 297: 296: 289: 283: 269: 207:Bad MĂĽnstereifel 176: 156: 140: 111:Notable deposits 44:siliceous sinter 36:sedimentary rock 22:is a freshwater 510: 509: 505: 504: 503: 501: 500: 499: 470: 469: 468: 467: 452: 448: 417: 413: 378: 374: 358: 357: 349: 345: 338: 322: 318: 304: 300: 291: 290: 286: 270: 266: 261: 253:Petrifying well 249: 195: 188: 177: 168: 157: 148: 141: 132: 113: 102: 89: 52: 17: 12: 11: 5: 508: 498: 497: 492: 487: 482: 466: 465: 446: 411: 372: 343: 336: 330:. Birkhäuser. 316: 314:, pp. 143-154. 298: 284: 263: 262: 260: 257: 256: 255: 248: 245: 203:Eifel Aqueduct 194: 191: 190: 189: 178: 171: 169: 165:Eifel Aqueduct 158: 151: 149: 142: 135: 131: 128: 127: 126: 120: 112: 109: 100: 88: 85: 69:ionic strength 51: 48: 15: 9: 6: 4: 3: 2: 507: 496: 493: 491: 488: 486: 483: 481: 478: 477: 475: 461: 457: 450: 442: 438: 434: 430: 426: 422: 415: 407: 403: 399: 395: 391: 387: 383: 376: 368: 362: 354: 347: 339: 337:3-7643-6425-4 333: 329: 328: 320: 313: 312: 309: 302: 294: 288: 282: 281:3-540-22016-X 278: 274: 268: 264: 254: 251: 250: 244: 242: 238: 234: 229: 225: 221: 217: 208: 204: 199: 186: 182: 175: 170: 166: 162: 155: 150: 146: 139: 134: 133: 124: 121: 118: 115: 114: 108: 106: 98: 94: 84: 80: 78: 74: 70: 66: 62: 58: 47: 45: 41: 37: 33: 29: 25: 21: 459: 449: 424: 420: 414: 389: 385: 375: 352: 346: 326: 319: 310: 306: 301: 287: 272: 267: 239:cloister at 212: 90: 87:Geochemistry 81: 53: 27: 19: 18: 187:Hot Springs 77:speleothems 57:Macrophytes 28:calc-sinter 474:Categories 259:References 237:Romanesque 181:travertine 61:travertine 40:Calcareous 32:lamination 441:203298501 406:194154048 392:: 34–76. 361:cite book 233:Rochester 183:) in the 145:aqueducts 123:Mono Lake 117:Pamukkale 97:aragonite 247:See also 63:), high 50:Features 38:layers. 241:Norwich 130:Gallery 93:calcite 439:  404:  334:  279:  224:marble 216:Norman 437:S2CID 402:S2CID 367:link 332:ISBN 277:ISBN 222:nor 220:onyx 79:). 73:tufa 429:doi 394:doi 390:168 205:in 95:or 476:: 458:. 435:. 425:99 423:. 400:. 388:. 384:. 363:}} 359:{{ 311:68 163:. 107:) 65:pH 443:. 431:: 408:. 396:: 369:) 340:. 295:. 101:2 71:( 67:/

Index

calcium carbonate
lamination
sedimentary rock
Calcareous
siliceous sinter
Macrophytes
travertine
pH
ionic strength
tufa
speleothems
calcite
aragonite
tufa/geochemistry
Pamukkale
Mono Lake
Pure calc sinter, typical for aqueducts and all kinds of water facilities.
aqueducts
Roman aqueduct in Germania Inferior. Eifel Aqueduct, clogged by fine sinter.
Germania Inferior
Eifel Aqueduct
Deposits of several thousand years of calc sinter (travertine) in the Bridgeport, California Hot Springs
travertine
Bridgeport, California

Eifel Aqueduct
Bad MĂĽnstereifel
Norman
onyx
marble

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