 | Sir Charles Lyell - 1838 - 582 Seiten
...converted into flint and chert, the original calcareous matter being replaced by silex. (Fig. 199.) One of the limestones of the Middle Oolite has been...bottom of the sea. They belong chiefly to the genera Caryophyllia (Fig. 200.), Agaricia, and Fig. 200. Fig. 199. Columnar™ oblonga, Blainv. Upper Oolite,... | |
 | Sir Charles Lyell - 1838 - 606 Seiten
...converted into flint and chert, the original calcareous matter being replaced by silex. (Fig. 199.) One of the limestones of the Middle Oolite has been...bottom of the sea. They belong chiefly to the genera GaryophyIlia (Fig. 200.), Agaricia, and Fig. 200. Fig. 199. Columntma oblonga, Blainv. Caryophyllia... | |
 | Sir Charles Lyell - 1839 - 330 Seiten
...converted into flint and chert, the original calcareous matter being replaced by silex. (Fig. 199.) One of the limestones of the Middle Oolite has been...bottom of the sea. They belong chiefly to the genera Caryophyllia (Fig. 200.), Agaricia, and Astrea, and sometimes form masses of coral fifteen feet thick.... | |
 | Sir Charles Lyell - 1841 - 946 Seiten
...converted into flint and chert, the original calcareous matter being replaced by silex. (Fig.237.) One of the limestones of the Middle Oolite has been...bottom of the sea. They belong chiefly to the genera Caryophyllia (Fig. 238.), Agaricia, and Fig. 237. Fig. 238. Coíwnnaría oblonga, lïlainv. Upper Oolite,... | |
 | Sir Charles Lyell - 1845 - 338 Seiten
...converted into flint and chert, the original calcareous matter being replaced by silex. (Fig. 199.) One of the limestones of the Middle Oolite has been...bottom of the sea. They belong chiefly to the genera Caryophyllia (Fig. 200.), Agaricia, ana N&Vcea., aiA SCTKVC¿«TORS, Wax masses of coral fifteen feet... | |
 | Sir Charles Lyell - 1846 - 358 Seiten
...converted into dint and chert, the original calcareous matter being replaced by siles. (Fis:- 199-) One of the limestones of the Middle Oolite has been...the bottom of the sea. They belong chiefly to the gênera Caryophyllia (Fig. 200.), Agaricia, and Astrea, and sometimes form masses of coral fifteen... | |
 | William Adam - 1857 - 194 Seiten
...horn-like projection, and was discovered in the cuttings of the Great Western Railway, near Chippenham. One of the limestones of the middle Oolite has been...consists, in part, of continuous beds of petrified corals, nearly retaining the position in which they grew at the bottom of the sea. They belong chiefly to the... | |
 | E. W. Payne - 1859 - 236 Seiten
...the minute cases of the cypris. The coral crag of Berkshire consists of petrified coral, generally retaining the position in which they grew at the bottom of the ocean. In this a great variety of beautiful corals can be seen by the microscope.* The coal beds show... | |
 | John Marius Wilson - 1859 - 476 Seiten
...kangaroo; the wing-covers of beetles and other remains of insects; continuous beds of petrified coral, in the position in which they grew at the bottom of the sea; the iguanodon, a stupendous freshwater lizard, supposed to have been seventy feet long; and a profusion... | |
 | Chambers W. and R., ltd - 1862 - 854 Seiten
...the whole group seems to disappear. It attains to a maximum thickness of 190 feet The corals retain the position in which they grew at the bottom of the sea ; they sometimes form masses 15 feet thick. The characteristic genera are Isastrira (qv), Thamnaslrtra (qv),... | |
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Middle Oolite. Coral Rag. — One of the limestones of the Middle Oolite has been called the " Coral Rag," because it consists, in part, of continuous beds of petrified corals, for the most part retaining the position in which they grew at the bottom... 
