Caradocn.
/kaˈradək/ Geology.
Applied attributively to a stage or series or to the rocks of the Ordovician System in Britain.
ΘΚΠ
the world > the earth > structure of the earth > age or period > stratigraphic units > [adjective] > primary or Palaeozoic > Ordovician > specific
Caradoc1835
Tremadoc1847
Arenig1854
Skiddaw1897
Cincinnatian1899
Skiddavian1905
Caradocian1910
Tremadocian1910
1835 R. I. Murchison in London & Edinb. Philos. Mag. vii. 47 Caradoc sandstones. This name..has been derived from the..ridge of Caer Caradoc.
1855 J. Phillips Man. Geol. 192 There is also a narrow tract of Caradoc sandstone running N.N.W. in the Lickey Hills.
Derivatives
Caraˈdocian adj.
ΘΚΠ
the world > the earth > structure of the earth > age or period > [adjective] > primary or Palaeozoic > Ordovician
Ordovician1879
Cincinnatian1899
Caradocian1910
the world > the earth > structure of the earth > age or period > stratigraphic units > [adjective] > primary or Palaeozoic > Ordovician > specific
Caradoc1835
Tremadoc1847
Arenig1854
Skiddaw1897
Cincinnatian1899
Skiddavian1905
Caradocian1910
Tremadocian1910
1910 Encycl. Brit. V. 300/1 In the Lake district the Coniston limestone series represents the Upper Caradocian.
1960 L. D. Stamp Britain's Struct. & Scenery (ed. 5) xii. 109 Caradocian and Ashgillian..being the lower and upper parts respectively of the old Bala Group.
This entry has not yet been fully updated (first published 1972; most recently modified version published online December 2018).
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n.1835