tufan.

Brit.

/ˈtjuːfə/,

/ˈtʃuːfə/,

/ˈtuːfə/, U.S.

/ˈt(j)ufə/

Forms: Also 1700s–1800s tuffa, 1800s tufo, tupha.

Etymology: < Italian tufa, tufo < Latin tōfus , tōphus : see tophus n.; compare tuff n.

Geology.

a. A generic name for porous stones, formed of pulverulent matter consolidated and often stratified. (See Note s.v. tuff n.)

ΘΚΠ

the world > the earth > structure of the earth > constituent materials > stone > [noun] > porous stone

sieve-stone1681

siliquastre1708

tufa1777

sucked stone1778

the world > the earth > structure of the earth > constituent materials > rock > igneous rock > [adjective] > volcanic > volcanic tuff

tufa1777

tufaceous1876

tuffaceous1882

1777 G. Forster Voy. round World I. 586 The stone of which the statue itself is formed..being nothing but the red tufa which covers the whole island.

1789 J. Williams Nat. Hist. Mineral Kingdom II. 382 There are great quantities of the concreted substance called tufa in many parts of Scotland.

1849 J. D. Dana U.S. Exploring Exped.: Geol. (1850) iii. 241 The tufa is very friable, yielding easily to the fingers.

b. calcareous tufa n. ‘a porous or vesicular carbonate of lime, generally deposited near the sources and along the courses of calcareous springs’ (Page Handbk. Geol. Terms, 1865). Cf. tuff n. a.

ΘΚΠ

the world > the earth > structure of the earth > constituent materials > rock > sedimentary rock > [noun] > calcareous tuff

tophus1555

calcareous tuff1569

calcareous tufa1811

calc-tuff1822

schaalstein1866

1811 J. Pinkerton Petralogy I. 518 (note) At Bionnay there are houses built of a calcareous tufa, containing fragments of lime-spar, limestone, and slate.

1811 J. Pinkerton Petralogy II. 374 (note) This [tufo] is the Italian and classical orthography. Tufa may be reserved for depositions merely aqueous.

1839 G. Roberts Dict. Geol. Tufa, or Calcareous Tufa.., a friable earthy deposit from calcareous springs. The more solid form is travertin.

1865 D. Livingstone & C. Livingstone Narr. Exped. Zambesi xi. 222 In the vicinity of the erupted rocks we usually meet soft calcareous tufa.

1867 W. T. Brande & G. W. Cox Dict. Sci., Lit. & Art (new ed.) III. 877/2 Tufa [is] a name applied in Italy to certain porous loose rocks... Volcanic Tufa is the material under which Pompeii was buried... Calcareous Tufa when consolidated passes into Travertine.

c. volcanic tufa n. = volcanic tuff n. at tuff n. b.

ΘΚΠ

the world > the earth > structure of the earth > constituent materials > rock > igneous rock > [noun] > volcanic rocks > volcanic tuff

volcanic tufa1772

volcanic tuff1815

1772 W. Hamilton in Philos. Trans. 1771 (Royal Soc.) 61 7 The Italians distinguish it by the name of tufa, and it is in general use for building.

1773 Ann. Reg. 1772 Nat. Hist. 79/2 What is called here Tuffa..is the same that covers Herculaneum, and that composes most of the high grounds about Naples; it is..a mixture of small pumice stones, ashes, and fragments of lava,..hardened into a sort of stone.

1778 Philos. Trans. 1777 (Royal Soc.) 68 2 The walls were..of a tuffa exactly resembling that of Naples and its environs.

1794 R. J. Sulivan View of Nature I. 84 The..mass through which the catacombs are excavated are all indurated tufa.

1811 J. Pinkerton Petralogy II. 374 Brochant..supposes that they become volcanic tufo.

1836 J. Murray Hand-bk. for Travellers on Continent 221/1 Composed..of tufa and scoriæ, exactly similar to that found on Vesuvius.

1863 J. D. Dana Man. Geol. i. 685 When rain or moisture from any source descends with the cinders, the mass forms tufa,—a stratified, somewhat earthy, granular..rock, of gray, yellowish-brown, and brownish colors.

1866 P. H. Lawrence tr. B. von Cotta Rocks Classified i. iii. 97 Tufa is now principally used to denote an earthy compound of volcanic products of the most various kind.

Compounds

C1.

tufa cement n.

ΚΠ

1839 W. Chambers Tour Holland 55/1 Andernach is an ancient walled town, and the seat of a considerable export trade in oven stones and tufa cement.

Categories »

tufa grotto n.

tufa quarry n.

ΚΠ

1891 F. W. Farrar Darkness & Dawn I. xxiv. 231 The overhanging sides of the tufa quarry.

tufa rock n.

ΚΠ

1820 T. S. Hughes Trav. Sicily II. xv. 368 Some workmen were excavating a wine vault in the tufa-rock.

1865 J. H. Bennet Winter in S. Europe (ed. 3) viii. 205 The island [i.e. Capri] is of limestone—a healthier geological formation than the soft tufa rock of Naples.

tufa stone n.

ΚΠ

1793 Trans. Soc. Arts (ed. 2) 5 222 A Tufa stone, found on the rocky banks of the Rhine.

1894 Daily News 22 Sept. 6/2 The columns..are generally of grey tufa-stone.

tufa wall n.

ΚΠ

1877 J. Northcote Catacombs i. iii. 45 He strengthened the friable tufa walls of some of the galleries..by..arches of brick and stone work.

C2.

tufa-like adj.

ΚΠ

1910 19th Cent. & After Feb. 365 The piers were formed of tufa-like Caux stone.

tufa-paved adj.

ΚΠ

1905 R. Bagot Passport i The steep, tufa-paved street.

This entry has not yet been fully updated (first published 1915; most recently modified version published online March 2022).

单词	tufa
释义	tufan. Brit. /ˈtjuːfə/, /ˈtʃuːfə/, /ˈtuːfə/, U.S. /ˈt(j)ufə/ Forms: Also 1700s–1800s tuffa, 1800s tufo, tupha. Etymology: < Italian tufa, tufo < Latin tōfus , tōphus : see tophus n.; compare tuff n. Geology. a. A generic name for porous stones, formed of pulverulent matter consolidated and often stratified. (See Note s.v. tuff n.) ΘΚΠ the world > the earth > structure of the earth > constituent materials > stone > [noun] > porous stone sieve-stone1681 siliquastre1708 tufa1777 sucked stone1778 the world > the earth > structure of the earth > constituent materials > rock > igneous rock > [adjective] > volcanic > volcanic tuff tufa1777 tufaceous1876 tuffaceous1882 1777 G. Forster Voy. round World I. 586 The stone of which the statue itself is formed..being nothing but the red tufa which covers the whole island. 1789 J. Williams Nat. Hist. Mineral Kingdom II. 382 There are great quantities of the concreted substance called tufa in many parts of Scotland. 1849 J. D. Dana U.S. Exploring Exped.: Geol. (1850) iii. 241 The tufa is very friable, yielding easily to the fingers. b. calcareous tufa n. ‘a porous or vesicular carbonate of lime, generally deposited near the sources and along the courses of calcareous springs’ (Page Handbk. Geol. Terms, 1865). Cf. tuff n. a. ΘΚΠ the world > the earth > structure of the earth > constituent materials > rock > sedimentary rock > [noun] > calcareous tuff tophus1555 calcareous tuff1569 calcareous tufa1811 calc-tuff1822 schaalstein1866 1811 J. Pinkerton Petralogy I. 518 (note) At Bionnay there are houses built of a calcareous tufa, containing fragments of lime-spar, limestone, and slate. 1811 J. Pinkerton Petralogy II. 374 (note) This [tufo] is the Italian and classical orthography. Tufa may be reserved for depositions merely aqueous. 1839 G. Roberts Dict. Geol. Tufa, or Calcareous Tufa.., a friable earthy deposit from calcareous springs. The more solid form is travertin. 1865 D. Livingstone & C. Livingstone Narr. Exped. Zambesi xi. 222 In the vicinity of the erupted rocks we usually meet soft calcareous tufa. 1867 W. T. Brande & G. W. Cox Dict. Sci., Lit. & Art (new ed.) III. 877/2 Tufa [is] a name applied in Italy to certain porous loose rocks... Volcanic Tufa is the material under which Pompeii was buried... Calcareous Tufa when consolidated passes into Travertine. c. volcanic tufa n. = volcanic tuff n. at tuff n. b. ΘΚΠ the world > the earth > structure of the earth > constituent materials > rock > igneous rock > [noun] > volcanic rocks > volcanic tuff volcanic tufa1772 volcanic tuff1815 1772 W. Hamilton in Philos. Trans. 1771 (Royal Soc.) 61 7 The Italians distinguish it by the name of tufa, and it is in general use for building. 1773 Ann. Reg. 1772 Nat. Hist. 79/2 What is called here Tuffa..is the same that covers Herculaneum, and that composes most of the high grounds about Naples; it is..a mixture of small pumice stones, ashes, and fragments of lava,..hardened into a sort of stone. 1778 Philos. Trans. 1777 (Royal Soc.) 68 2 The walls were..of a tuffa exactly resembling that of Naples and its environs. 1794 R. J. Sulivan View of Nature I. 84 The..mass through which the catacombs are excavated are all indurated tufa. 1811 J. Pinkerton Petralogy II. 374 Brochant..supposes that they become volcanic tufo. 1836 J. Murray Hand-bk. for Travellers on Continent 221/1 Composed..of tufa and scoriæ, exactly similar to that found on Vesuvius. 1863 J. D. Dana Man. Geol. i. 685 When rain or moisture from any source descends with the cinders, the mass forms tufa,—a stratified, somewhat earthy, granular..rock, of gray, yellowish-brown, and brownish colors. 1866 P. H. Lawrence tr. B. von Cotta Rocks Classified i. iii. 97 Tufa is now principally used to denote an earthy compound of volcanic products of the most various kind. Compounds C1. tufa cement n. ΚΠ 1839 W. Chambers Tour Holland 55/1 Andernach is an ancient walled town, and the seat of a considerable export trade in oven stones and tufa cement. Categories » tufa grotto n. tufa quarry n. ΚΠ 1891 F. W. Farrar Darkness & Dawn I. xxiv. 231 The overhanging sides of the tufa quarry. tufa rock n. ΚΠ 1820 T. S. Hughes Trav. Sicily II. xv. 368 Some workmen were excavating a wine vault in the tufa-rock. 1865 J. H. Bennet Winter in S. Europe (ed. 3) viii. 205 The island [i.e. Capri] is of limestone—a healthier geological formation than the soft tufa rock of Naples. tufa stone n. ΚΠ 1793 Trans. Soc. Arts (ed. 2) 5 222 A Tufa stone, found on the rocky banks of the Rhine. 1894 Daily News 22 Sept. 6/2 The columns..are generally of grey tufa-stone. tufa wall n. ΚΠ 1877 J. Northcote Catacombs i. iii. 45 He strengthened the friable tufa walls of some of the galleries..by..arches of brick and stone work. C2. tufa-like adj. ΚΠ 1910 19th Cent. & After Feb. 365 The piers were formed of tufa-like Caux stone. tufa-paved adj. ΚΠ 1905 R. Bagot Passport i The steep, tufa-paved street. This entry has not yet been fully updated (first published 1915; most recently modified version published online March 2022). < n.1772
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