Bradfordn.
/ˈbradfəd/, U.S. /ˈbrædfərd/ Bradford clay n. (see quots.).
ΘΚΠ
the world > the earth > structure of the earth > constituent materials > clay > [noun] > other clays
red clayc1475
urry1669
blae1724
cat-dirt1747
iron clay1750
till1762
mulatto clay1788
oak-tree clay1794
porcelain jasper1794
porcellanite1794
Karoo ground1836
plinthite1836
papa1851
Bradford clay1858
Indianaite1868
sinopite1868
hydrobiotite1881
pampas-clay1885
byon1892
potato clay1896
bentonite1898
quick clay1901
gumbotil1916
1858 Q. Jrnl. Geol. Soc. 14 100 The Oolitic rocks..may be thus tabulated..Portland Oolite [is] Portlandian... Cornbrash, Forest Marble, Bradford Clay, Great Oolite, Stones-field Slate, Fuller's Earth [are] Bathonian.
1903 A. Geikie Text-bk. Geol. (ed. 4) II. vi. 1142 Its [sc. Forest Marble's] lower portion near Bradford-on-Avon is a grey marly clay with thin layers of tough limestone and calcareous sandstone about 10 feet thick, and this argillaceous band has been separately designated the Bradford clay.
Derivatives
Bradˈfordian adj.
ΘΚΠ
the world > the earth > structure of the earth > constituent materials > clay > [adjective] > other clays
cimolian1813
puggy1907
Bradfordian1910
1910 Encycl. Brit. IV. 372/1 Bradford clay, a thin, rather inconstant bed of clay or marl situated in England at the base of the Forest Marble, the two together constituting the Bradfordian group in the Bathonian series of Jurassic rocks.
This entry has not yet been fully updated (first published 1972; most recently modified version published online December 2021).
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n.1858