单词 | sparagmite |
释义 | sparagmiten. Geology. A generic term for the feldspathic sandstones (chiefly arkoses), conglomerates, and other fragmental rocks which occur in late Pre-Cambrian formations in Scandinavia. ΘΚΠ the world > the earth > structure of the earth > age or period > stratigraphic units > [noun] > pre-Cambrian formations Huronian1857 Labradorian1870 Keweenawan1876 sparagmite1882 Keewatin1886 Torridonian1893 Laxfordian1950 1866 Geol. Mag. III. 384 (table) ‘Spragmitic’ strata— conglomerates, Schists, Dolomitic beds.] 1882 A. Geikie Text-bk. Geol. 657 In central and northern Norway the Archæan gneiss is overlaid by reddish and grey sandstones and conglomerates (Sparagmite), with schists, quartzites, and limestones. 1930 B. N. Peach & J. Horne Chapters Geol. Scotl. iii. 72 The Sparagmite of Scandinavia is an arkose resembling the dominant type of the Torridon Sandstone. 1979 Nature 25 Jan. 290/1 Micaceous meta~arkoses (sparagmites) have, in places, a basal conglomerate resting unconformably on the Basal gneisses. This entry has not yet been fully updated (first published 1933; most recently modified version published online June 2018). < n.1882 |
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