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In the island of Seeland, in Denmark, the newest member of the chalk series, seen in the sea-cliffs at Stevensklint resting on white chalk with flints, is a yellow limestone, a portion of which, at Faxoe, where it is used as a building stone, is composed of corals, even more conspicuously than is usually observed in recent coral reefs.
On the other hand, the Maestricht and Faxoe limestones are very closely connected with the chalk, to which also the Pisolitic limestone of France is referable. Maestricht Beds and Faxoe Limestone. 2. Upper White Chalk, with flints. 3. Lower White Chalk, without flints. 4. Chalk Marl. 5. Gault.
FOREIGN. Maestricht beds and Faxoe chalk. BRITISH. Sands of Folkestone, Sandgate, and Hythe. FOREIGN. Neocomian of Neufchatel, and Hils conglomerate of North Germany. BRITISH. Upper Purbeck beds, fresh-water. FOREIGN. Marnes a gryphees virgules of Argonne. BRITISH. Coral rag of Berkshire, Wilts, and Yorkshire. FOREIGN. Nerinaean limestone of the Jura. BRITISH. Cornbrash and forest marble.
Pisolitic Limestone of France. Chalk of Faxoe. Geographical Extent and Origin of the White Chalk. Chalky Matter now forming in the Bed of the Atlantic. Marked Difference between the Cretaceous and existing Fauna. Chalk-flints. Pot-stones of Horstead. Vitreous Sponges in the Chalk. Isolated Blocks of Foreign Rocks in the White Chalk supposed to be ice-borne.
To the English student of geology it will be sufficient to begin by enumerating those groups which characterise the series in this country and others immediately contiguous, alluding but slightly to those of more distant regions. Belemnitella mucronata, Maestricht, Faxoe, and White Chalk. a. Entire specimen, showing vascular impression on outer surface, and characteristic slit. b.
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