Cothamn.
/ˈkɒtəm/ Used attributively to designate an argillaceous limestone having dendritic markings, also called landscape marble or stone. Also Cotham beds.
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the world > the earth > structure of the earth > constituent materials > rock > sedimentary rock > [noun] > limestone > others
lias1404
stone marrow1681
stone marl1682
saint's head stone1763
Kentish rag1769
watericle1776
kankar1793
Cotham1816
mountain limestone1817
tosca1818
cornstone1819
burr1829
coral-limestone1831
scar-limestone1831
Wenlock limestone1834
bavin1839
curf1839
Solenhofen slate1841
Beer stone1871
miliolite limestone1872
Clipsham1877
reef limestone1884
Hopton wood1888
thermo-calcite1888
Kilkenny marble1930
micrite1959
1816 R. Jameson Min. (ed. 2) II. 196 To the same compact marl, may be referred the variety called Cottam Marble.
1822 W. D. Conybeare & W. Phillips Outl. Geol. Eng. & Wales i. 264 The lias..occasionally exhibits..dendritical appearances (Cottam stone or marble).
1845 P. B. Brodie Hist. Fossil Insects 91 In most parts of the southern sections there is a band of stone locally termed ‘Landscape stone’, or ‘Cotham marble’.
1883 Encycl. Brit. XV. 529 The well-known landscape marble or Cotham stone.
1929 L. Richardson in Evans & Stubblefield Handbk. Geol. Great Brit. iii. ix. 344 The Cotham Beds, like the underlying Westbury Beds, extend all across the country.
1960 L. D. Stamp Britain's Struct. & Scenery (ed. 5) xii. 129 One band of limestone, the fascinating Cotham marble, was often seen polished in fragments on Victorian mantlepieces.
1968 P. E. Kent in Sylvester-Bradley & Ford Geol. East Midlands x. 178 The Cotham Beds are marls which typically form the upper part of the Rhaetic in the East Midlands.
This entry has not yet been fully updated (first published 1972; most recently modified version published online September 2018).
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