Lithostratigraphy by Country - Lithostratigraphy of Belgium, Lithostratigraphy of England, Lithostratigraphy of the Netherlands, London Clay (Paperback)

Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Pages: 129. Not illustrated. Chapters: Lithostratigraphy of Belgium, Lithostratigraphy of England, Lithostratigraphy of the Netherlands, London Clay, Blue Lias, Purbeck Group, Maastricht Formation, Wenlock Group, Inferior Oolite, Wealden Group, Llandovery Group, Rupel Formation, Barton Beds, Breda Formation, Lias Group, Corallian Oolite Formation, Llandeilo Group, Houthem Formation, Landen Formation, Voort Formation, Veldhoven Formation, Dongen Formation, Tongeren Formation, Hannut Formation, Middle North Sea Group, Maldegem Formation, Bathonian Series, Brussel Formation, Rupel Group, Gentbrugge Formation, Heers Formation, Aalter Formation, Lower North Sea Group, Tongeren Group, Landen Group, Kortrijk Formation, Hesbaye Group, Ieper Group, Tielt Formation, Opglabbeek Formation, Tienen Formation, Lede Formation, Bovey Formation, Zenne Group, Bradford Clay, Skiddaw Slate, Aachen Formation. Excerpt: The London Clay Formation is a marine geological formation of Ypresian (Lower Eocene Epoch, c. 56-49 Ma) age which crops out in the southeast of England. The London Clay is well known for the fossils it contains. The fossils from the Lower Eocene indicate a moderately warm climate, the flora being tropical or subtropical. Though sea levels changed during the deposition of the Clay, the habitat was generally a lush forest - perhaps like in Indonesia or East Africa today - bordering a warm, shallow ocean. The London Clay consists of a stiff, bluish coloured clay which becomes brown when weathered. Nodular lumps of pyrite and crystals of selenite frequently occur within the clay, and large septarian concretions are also common. These have been used in the past for the manufacturing of cement. They were once dug for this purpose at Sheppey, near Sittingbourne, and at Harwich, and also dredged off the Hampshire coast. The clay itself has been used c...