cornstonen.

Brit.

/ˈkɔːnstəʊn/, U.S.

/ˈkɔrnˌstoʊn/

Etymology: < corn n.¹ + stone n.

Geology.

A name, originally local, for an earthy concretionary limestone, mottled red and green, forming a subordinate bed in the Old Red Sandstone formation in various parts of Britain. ‘They are said to derive their name from the fertile corn-soil that overlies them in Hereford, as compared with the tenacious clays which cover the marls and sandstones’ (D. Page Handbk. Geol. Terms).

ΘΚΠ

the world > the earth > structure of the earth > constituent materials > rock > sedimentary rock > [noun] > limestone > others

lias1404

stone marrow1681

stone marl1682

saint's head stone1763

Kentish rag1769

watericle1776

kankar1793

Cotham1816

mountain limestone1817

tosca1818

cornstone1819

burr1829

coral-limestone1831

scar-limestone1831

Wenlock limestone1834

bavin1839

curf1839

Solenhofen slate1841

Beer stone1871

miliolite limestone1872

Clipsham1877

reef limestone1884

Hopton wood1888

thermo-calcite1888

Kilkenny marble1930

micrite1959

1819 G. B. Greenough Crit. Exam. Geol. iv. 218 Chert, flint, septaria, gypsum, ball-ironstone, cornstone, afford examples of beds naturally interrupted on the small scale.

1822 W. D. Conybeare & W. Phillips Outl. Geol. Eng. & Wales 362 A rock of a pseudo-brecciated appearance, known by the name of Corn-stone.

1877 A. H. Green Geol. for Students: Physical Geol. (ed. 2) ii. §6. 73 Passages sometimes occur from Calcareous sandstones into Limestone, and the intermediate forms are called locally Cornstones.

attributive.1842 H. Miller Old Red Sandstone (ed. 2) viii. 176 The Cornstone formation is more extensively developed in Forfarshire.1881 C. Whitehead Hops 22 The Cornstone division of the old Red Sandstone formation.

This entry has not yet been fully updated (first published 1893; most recently modified version published online March 2022).

单词	cornstone
释义	cornstonen. Brit. /ˈkɔːnstəʊn/, U.S. /ˈkɔrnˌstoʊn/ Etymology: < corn n.¹ + stone n. Geology. A name, originally local, for an earthy concretionary limestone, mottled red and green, forming a subordinate bed in the Old Red Sandstone formation in various parts of Britain. ‘They are said to derive their name from the fertile corn-soil that overlies them in Hereford, as compared with the tenacious clays which cover the marls and sandstones’ (D. Page Handbk. Geol. Terms). ΘΚΠ the world > the earth > structure of the earth > constituent materials > rock > sedimentary rock > [noun] > limestone > others lias1404 stone marrow1681 stone marl1682 saint's head stone1763 Kentish rag1769 watericle1776 kankar1793 Cotham1816 mountain limestone1817 tosca1818 cornstone1819 burr1829 coral-limestone1831 scar-limestone1831 Wenlock limestone1834 bavin1839 curf1839 Solenhofen slate1841 Beer stone1871 miliolite limestone1872 Clipsham1877 reef limestone1884 Hopton wood1888 thermo-calcite1888 Kilkenny marble1930 micrite1959 1819 G. B. Greenough Crit. Exam. Geol. iv. 218 Chert, flint, septaria, gypsum, ball-ironstone, cornstone, afford examples of beds naturally interrupted on the small scale. 1822 W. D. Conybeare & W. Phillips Outl. Geol. Eng. & Wales 362 A rock of a pseudo-brecciated appearance, known by the name of Corn-stone. 1877 A. H. Green Geol. for Students: Physical Geol. (ed. 2) ii. §6. 73 Passages sometimes occur from Calcareous sandstones into Limestone, and the intermediate forms are called locally Cornstones. attributive.1842 H. Miller Old Red Sandstone (ed. 2) viii. 176 The Cornstone formation is more extensively developed in Forfarshire.1881 C. Whitehead Hops 22 The Cornstone division of the old Red Sandstone formation. This entry has not yet been fully updated (first published 1893; most recently modified version published online March 2022). < n.1819
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