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单词 coral-rag
释义

coral-ragn.

Etymology: < coral n.1 + rag n.2 in its local sense of hard coarse-textured rock.
Geology.
The upper member of the Middle Oolite series, a kind of limestone, containing continuous beds of petrified corals.
ΘΚΠ
the world > the earth > structure of the earth > age or period > stratigraphic units > [noun] > secondary or Mesozoic > Jurassic > specific
Oxford clay1812
cornbrash1813
Kellaways1813
Portland oolite1814
coral-rag1816
oolite1816
Oxford oolite1818
Kimmeridge clay1830
lias1833
Portland sand1836
skull-cap1839
Solenhofen slate1841
Stonesfield slate1855
Callovian1856
Tithonian1869
coralline oolite1871
Lincolnshire limestone1873
Ampthill Clay1877
Aalenian1882
Pliensbachian1903
1816 W. Smith Strata Identified 19 The Coral Rag consists chiefly of lumps of coralline Limestone.
1878 T. H. Huxley Physiography (ed. 2) xvii. 274 The coral-rag itself is altogether similar to the coral-limestone.
1991 C. Lycett Green Perfect Eng. Country House (BNC) 27 It is built of glowing limestone, known as Coral Rag, a stone made of the fossilized remains of coral and other shells.
This entry has not yet been fully updated (first published 1893; most recently modified version published online March 2021).
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n.1816
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