A cave, or cavern is an opening of some size in the solid crust of the earth beneath the surface. Caves are principally met with in limestone rocks, sometimes in sandstone and in volcanic rocks. Some of them have a very grand or picturesque appearance, such as Fingal's Cave in Staffordshire, others, such as the Mammoth Cave of Kentucky, which incloses an extent of about 40 miles of subterranean windings, are celebrated for their great size and subterranean waters, others for their gorgeous stalactites and stalagmites; others are of interest to the geologist and archaeologist from the occurrence in them of osseous remains of animals no longer found in the same region, perhaps altogether extinct, or for the evidence their clay floors and rudely-sculptured walls, and the prehistoric implements and human bones found in them, offer of the presence of early man.
Caves in which the bones of extinct animals are found owe their origin, for the most part, to the action of rain-water on limestone rocks. The deposit contained in them usually consists of clay, sand, and gravel combined. In this are embedded the animal remains, and stones either angular or rounded. Some of the remains found in European caverns belong to animals now found only in the tropical or subtropical regions, and others are the remains of animals now living in more northerly areas; others, again, are the relics of extinct animals. Among the latter class of animals are the cave bear and lion, the mammoth and mastodon, species of rhinoceros, etc. Of others that have only migrated may be mentioned the reindeer, which is no longer found in Southern Europe; and the Hyoena crocuta, found in the Gibraltar caves, which now lives in South Africa. The ibex, the chamois, and a species of ground squirrel, are shown to have once lived in the Dordogne, but are now found only on the heights of the Alps and Pyrenees.
Thus it is evident that the geographical conditions of the country must have been very different from what they are now. Man's relation to these extinct animals, and his existence at the time these changes took place, are demonstrated by such discoveries as those of human bones and worked flints beneath layers of hyena droppings, as in Wokey's Hole, near Wells, England; mixed up indiscriminately, as in Kent's Hole, near Torquay, with bones of elephant, rhinoceros, hyena, etc; and by the fact that many bones of the extinct animals are split up, evidently for the sake of the marrow.
In the Dordogne and Savigne caves fragments of horn have been found bearing carved, or rather deeply scratched, outline figures of ibex, reindeer, and mammoth. Among the most remarkable bone-caves are those of Kirkdale, in Yorkshire; Kent's Hole, Wokey's Hole; of Franconia, in Bavaria; the banks of the Meuse, near Liege; and the south of France. Research Cave
The Coronation Chair is an ancient chair kept in Westminster Abbey, and used at the coronation of the sovereigns of England, all of whom have been crowned in it since Edward I. It is said to have been made for that king, and is architectural in design, having a high, upright, gabled, and crocketed back, with panels of tracery work, and rests on four carved lions. In a space beneath the seat is the famous Coronation Stone, the Scottish Lia Fail or 'Stone of Destiny', carried off to England by Edward I. It is said to have been originally brought from Ireland, and was used in the coronation of the Scottish kings at Scone. It is a block of red sandstone, derived, according to Skene, from the rocks near Scone. There is also a coronation chair for the consort, made for the coronation of Mary II, when she was crowned along with William III. Research Coronation Chair
A grindstone is a cylindrical stone, on which sharpening, cutting, and abrasion are effected by the convex surface while the stone is revolving on its axis. They are made of sandstone, or sandstone grit of various degrees of fineness. Good stones are obtained in various parts of England, especially from the coal districts of Northumberland, Newcastle grindntones being especially famous. The Sheffield grindstone, traditionally used for grinding files and the like, is obtained from Hardsley, about 14 miles north of Sheffield. Artificial grindstones have also been successfully used. Research Grindstone
Ichnology is the scientific study of footprints (especially fossil footprints - ichnites), first popularised in the 19th century following the discover in 1828 of the footprints of a tortoise in sandstone at Annandale by Dr Duncan. Research Ichnology
Arenite is a sandy sedimentary rock composed of eroded fragments of pre-existing rocks. The individual particles are of about the same size as sand grains, thus they include grits and siltstones as well as sandstones. Rocks of this type can be of marine, fresh-water, terrestrial, or glacial origin. Quartz sandstone is the most common type, and the terms 'arenite' and 'sandstone' are often used interchangeably. Special types of arenaceous rocks include greywackes, greensands, and arkose. Research Arenite
Arkose is a dark red or brownish coloured sedimentary rock resembling granite, formed from feldspar-rich sediment deposited on land or in water. Arkose is a form of sandstone abundant in many parts of the world, and chiefly composed of granite and gneiss sediments. Research Arkose
In geology, the Caradoc sandstone is an upper division of the lower Silurian rocks, consisting of red, purple, green, and white micaceous and sometimes quartzose grits and limestones containing corals, mollusca, and trilobites. Named after the hilly range of Caer-Caradoc in Shropshire. Research Caradoc Sandstone
In geology, the Carboniferous was the seventh geological period, 250,000,000 years ago. This era marked the formation of the coal beds. It is the great group of strata which lie between the Old Red Sandstone below and the Permian or Dyas formation above, and is named from the quantities of coal, shale, and other carbonaceous matter contained in them. They include the coal measures, millstone grit, and mountain limestone, the first being uppermost and containing the chief coal-fields that are worked. Iron-ore, limestone, clay, and building-stone are also yielded abundantly by the carboniferous strata which are found in many parts of the world often covering large areas. The thickness of the coal measures in South Wales has been estimated at 10,000 to 13,000 feet. As coal consists essentially of metamorphosed vegetable matter, fossil plants are very numerous in the carboniferous rocks, more than 1500 species of them having been named, a large proportion of which are ferns, tree, lycopods and large horse-tail like plants. The animals include insects, scorpions, amphibians, numerous corals, crinoids, molluscs, cephalopoda, sharks and other fishes. Research Carboniferous
Celestite (also known as celestine) is a natural sulphate of strontium, so named from its occasional delicate blue colour. It occurs crystallized, also in compact massive and fibrous forms. Celestite is often found disseminated through limestone or sandstone, or lining cavities in such rocks. It is associated with calcite, dolomite, gypsum, sulphur, fluorite and is also found as a gangue mineral in lead veins. It is an important source of strontium and is used to prepare nitrate of strontium for fireworks and tracer bullets, and in the refining of beet sugar. It has the formulae SrSO4 and a relative hardness of 4. Research Celestite
Coal-measures are the upper division of the carboniferous system, consisting of beds of sandstone, shale, etc, between which are coal-seams. Research Coal-Measures
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Matt and Leela Probert
Abbreviations
Research Cave
