The Geology of England and Wales: With Notes on the Physical Features of the Country

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G. Philip & Son, 1887 - Geology - 670 pages
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Page v - Wales,' by Conybeare and Phillips, filled 531 pages; and only the first part of that work was published. The aim of the present work is to afford a book of reference, useful not only to students of the scientific aspect of the subject, but also to engineers and others in its practical applications." On the question of Nomenclature and Classification Mr. Woodward observes that, in the absence of a definite scheme formulated on the part of the International Geological Commission, the classification...
Page 517 - During the excavations it became clear that the bones had been greatly disturbed by water action, that the stalagmite floor, in parts more than a foot in thickness, and massive stalactites had...
Page 583 - ... in a horizontal or nearly horizontal direction, following the sweep of the hillside whether curved or straight. The boundary line between these several strips may have been originally only a mathematical one, connecting, say, two mere-stones, and yet a bank will soon have been formed along it. For each upper cultivator will naturally have taken care not to allow the soil of his strip to descend to fertilize his neighbour's below. He would draw the lower limit of his strip by a reversed furrow,...
Page 22 - Now does this mean that it may have been two, or three, or four hundred million years ? Because this really makes all the difference.
Page 255 - interstratitied with ordinary clays containing a large amount of the oxides of iron, and also organic matter, which by their mutual reaction, gave rise to a solution of bi-carbonate of iron, that this solution percolated through the limestone, and removing a large part of the Carbonate of Lime by solution, left in its place Carbonate of Iron ; and not that the rock was formed as a simple deposit at the bottom of the sea.
Page 280 - The deposit worked for slates is sometimes only a foot in thickness, but it generally consists of two fissile beds of a buff-coloured or grey oolitic limestone called pendle, each about two feet thick, separated by a bed of loose calcareosiliceous sandstone called race, about the same thickness.
Page 358 - Red Chalk, which seemed to favour this view, is due to the northerly attenuation, which is shared by nearly all the Secondary rocks of Lincolnshire. Moreover, the Carstone rests on different members of the Tealby group, and presents a strong contrast to them in lithological character, and in being, except for the derived fauna, entirely unfossiliferous. It is composed of such materials as would result from the " washing
Page 483 - Totnes, a little town so mingled with the country that it is difficult to say where the one ends and the other begins.
Page 428 - I may state that they are of the same nature as the igneous rocks of part of the Lower Silurian region of North Pembrokeshire, of Caernarvonshire, and of the Llandeilo flag district of Montgomeryshire, &c., west of the Stiper Stones.
Page 422 - II. 186l'. simple — the gravel head is removed, and a large rectangular pit is sunk, which is supported by wood. The workmen cut out the clay in cubical lumps weighing about 30 Ibs. each, and fling them from stage to stage by means of a pointed staff ; it is then carried, to the clay cellars, and when properly dried sent to the potters.

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