| 单词 |
Malvernian |
| 释义 |
Malvernian, a. Geol.|mɒlˈvɜːnɪən, -ɔː-|
[f. the name of the Malvern Hills, a range in England between Hereford and Worcester: see -ian.]
Of, pertaining to, or characteristic of the Malvern Hills; spec. (a) applied to a Pre-Cambrian series of plutonic rocks that forms most of the hills; also absol.; (b) applied to a north-south orientation like that of the hills.
1879Q. Jrnl. Geol. Soc. XXXV. 654 The contained pebbles..consist of quartzite, quartz, gneiss, mica-schist, red felspar, and granitoid rock. This assemblage strongly suggests derivation from the Malvernian series represented at Primrose Hill. 1899Proc. Geologists' Assoc. XV. 426 The strike of the axes of the main folding of the country [around Stourbridge] is first north and south, in continuation of the main axes of the Malvern ridge (Malvernian folding), but at Abberley Hill it swings round almost at right angles to this direction, the axes now striking from west to east (Hercynian or Mercian folding). 1948L. J. Wills Palaeogeogr. Midlands ii. 7 The distribution of the Malvernian away from Malvern itself is quite unknown. 1969Bennison & Wright Geol. Hist. Brit. Isles iii. 68 The Malvernian is composed predominantly of metamorphosed igneous rocks, diorites and gabbros. Ibid. x. 248 (heading) Structures of Malvernian trend. |
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