| 单词 |
cornstone |
| 释义 |
cornstone Geol.|ˈkɔːnstəʊn|
[f. corn n.1 + stone.]
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’ (Page Handbk. Geol. Terms).
1819G. B. Greenough Critical Exam. Geol. iv. 218 Chert, flint, septaria, gypsum, ball-ironstone, cornstone, afford examples of beds naturally interrupted on the small scale. 1822Conybeare & Phillips Geol. Eng. & Wales 362 A rock of a pseudo-brecciated appearance, known by the name of Corn-stone. 1877A. H. Green Phys. Geol. ii. §6. 73 Passages sometimes occur from Calcareous sandstones into Limestone, and the intermediate forms are called locally Cornstones.
attrib.1842H. Miller O.R. Sandst. viii. (ed. 2) 176 The Cornstone formation is more extensively developed in Forfarshire. 1881Whitehead Hops 22 The Cornstone division of the old Red Sandstone formation. |
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单词 Cornu- 释义 Cornu-|knju|used as combining form of Cornubian Cornish, as in Cornu-Brit......