单词 | malvernian |
释义 | Malvernianadj.n. Chiefly Geology. Of, relating to, or characteristic of the Malvern Hills; spec. (a) designating a Precambrian series of plutonic rocks that forms most of the hills; also used as n. (usually with the); (b) designating a north–south orientation like that of the hills. ΘΚΠ the world > the earth > structure of the earth > structural features > [adjective] > specific direction Malvernian1879 hercynian1904 Caledonoid1913 the world > the earth > structure of the earth > age or period > stratigraphic units > [adjective] > pre-Cambrian > specific Huronian1854 Lewisian1859 Archaean1872 Torridon1873 Keweenawan1876 Pebidian1877 Malvernian1879 Longmyndian1887 Torridonian1893 Moinian1938 Laxfordian1950 1879 Q. Jrnl. Geol. Soc. 35 654 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. 1899 Proc. Geologists' Assoc. 15 426 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). 1948 L. J. Wills Palaeogeogr. Midlands ii. 7 The distribution of the Malvernian away from Malvern itself is quite unknown. 1969 G. M. Bennison & A. E. Wright Geol. Hist. Brit. Isles iii. 68 The Malvernian is composed predominantly of metamorphosed igneous rocks, diorites and gabbros. 1969 G. M. Bennison & A. E. Wright Geol. Hist. Brit. Isles x. 248 (heading) Structures of Malvernian trend. 1978 B. Chapman Clarke's Analyt. Archaeol. (ed. 2) x. 431 A group showing a small local distribution involving..Savernake pottery, Malvernian Roman pottery. This entry has been updated (OED Third Edition, June 2000; most recently modified version published online March 2022). < adj.n.1879 |
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