nagelfluhn.
/ˈnɑːɡ(ə)lfluː/, U.S. /ˈnɑɡəlˌflu/ Geology.
A massive conglomerate of Miocene age which is associated with the molasse of the Swiss Alps and contains pebbles likened to nail heads.
ΘΚΠ
the world > the earth > structure of the earth > constituent materials > rock > composite rock > [noun] > conglomerate > specific
pinnel1766
grauwacke1794
unguilite1799
greywacke1805
yolky-stone1805
nagelfluh1808
coombe rock1822
pebble bed1849
breccia1856
ceppo1881
banket1886
ouklip1892
crush-conglomerate1893
basal conglomerate1900
calcrete1902
rudite1904
fanglomerate1912
beach-rock1919
1808 R. Jameson Syst. Mineral. III. ix. 210 Nagelfluh.—This rock is usually composed of fragments of limestone, more or less rounded, and of various magnitudes, cemented together by a basis of calc-sinter.
1849 Q. Jrnl. Geol. Soc. 5 229 If the masses of nagelflue which constitute the Rigi mountain near Lucerne, and the still loftier Speer..near Wesen be included in one group, their thickness must be enormous, certainly exceeding 6000 or 8000 feet.
1879 Encycl. Brit. X. 321/2 The well-known nagelflue of Switzerland..can be shown from its fossil contents to be essentially a lacustrine formation.
1912 T. G. Bonney Building of Alps i. 25 The gravels, the so-called Nagelfluhe, are occasionally fully a mile in thickness.
1962 L. C. King Morphol. of Earth iv. 98 The presence of conglomerates and breccias grading into arkoses shows the rapid erosion of adjacent highlands... Thus arose the coarse Nagelfluh outwash of the Alps which passes northward into finer grades of sediment.
1993 J. Hogarth et al. tr. M. Cabos et al. Baedeker's Switzerland 12 Some remnants of those folds..survive in the nagelfluh beds.
This entry has been updated (OED Third Edition, June 2003; most recently modified version published online March 2022).
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n.1808