The Physical Geology and Geography of Great BritainE. Stanford, 1874 - 349 pàgines |
Altres edicions - Mostra-ho tot
The Physical Geology and Geography of Great Britain ... Sir Andrew Crombie Ramsay Visualització completa - 1863 |
The Physical Geology and Geography of Great Britain Andrew Crombie Ramsay Previsualització no disponible - 2016 |
The Physical Geology and Geography of Great Britain Andrew Crombie Ramsay Previsualització no disponible - 2010 |
Frases i termes més freqüents
Alps anticlinal anticlinal curve beds Boulder-clay Britain Cambrian Carboniferous Limestone Carboniferous rocks Chalk chiefly clay cliffs coal coal-fields Coal-measures coast conglomerates consist Continent contorted covered Crag Cretaceous Cumberland deposited Derbyshire disturbed east England Eocene Eocene strata epoch escarpment estuary feet flints flow formations formed fossils freshwater geological geologists Glacial glaciers gneiss gneissic rocks granite gravel Greensand Highlands hills igneous rocks islands Isle lakes Lammermuir Lammermuir hills Lancashire land lavas lime Lower Greensand Lower Silurian mammalia masses metamorphic miles Millstone Grit Miocene moraines mountains North Wales Old Red Sandstone Oolitic origin Palæozoic partly period Permian plain present Purbeck Reading beds Red Marl regions rise rivers sand scenery scooped Scotland sediments Severn shales shells Silurian Silurian rocks Silurian strata slopes sometimes species stones strata stratified rocks surface table-land Thames thick unconformably Upper Vale valley waste Weald Wealden Wealden area whole Yorkshire
Passatges populars
Pàgina iv - THERE rolls the deep where grew the tree. O earth, what changes hast thou seen ! There where the long street roars, hath been The stillness of the central sea. The hills are shadows, and they flow From form to form, and nothing stands ; They melt like mist, the solid lands, Like clouds they shape themselves and go.
Pàgina 153 - While this large ice-action was going on, a slow submersion of the land took place ; and as it sank, the glaciers, descending to the level of the sea, deposited their moraine rubbish there. Gradually the land sunk more and more, the cold still continuing; till this country, previously united to the Continent of Europe, became a group of icy islands, still covered with snow, and small...
Pàgina 157 - ... scattered the iceborne material having on a great scale flowed approximately from north to south. But England, south of the estuaries of the Severn and the Thames, for the most part, seems all this time to have remained above the waters; for not only is the country in general destitute of drift, but it is only close on the sea near Selsea and Brighton that erratic boulders of granite, &c., have been found, apparently floated from the Channel Islands, or from France. After a long period of submergence,...
Pàgina 251 - ... have formerly deposited, that the disasters which they now threaten may be averted. " The same causes have produced the same effects along the branches of the Rhine and the Meuse; and thus the richest districts of Holland have continually the frightful view of their rivers held up by embankments, at a height of from twenty to thirty feet above the level of the land.
Pàgina 72 - It is the very paradise of geologists, for it may be said to be in itself an epitome of the geology of almost the whole of Europe, and of much of Asia and America.
Pàgina 176 - These great lake basins are depressions, not of geological structure, but of denudation, and the grooves of the surface rocks which descend under their waters appear to point to glacial action as one of the great causes which have produced these depressions.
Pàgina 205 - ... shave it across and make a plain surface either horizontal or gently inclined. If a country be sinking very gradually and the rate of waste by all causes be proportionate to the rate of sinking, this will greatly assist in the production of the phenomena we are now considering. When raised out of the water the streams made by its drainage immediately began to scoop out valleys, and though some inequalities of contour forming mere bays may have been begun by marine denudation during emergence,...
Pàgina 159 - ... on reaching the points where they lie, have taken a final bound and fallen into the valley below. But when experienced in the geology of glaciers, the eye detects the true cause of these phenomena, and you have no hesitation in coming to the conclusion, that as the glacier declined in size, the errant stones were let down upon the surface of the rocks so quietly and so softly, that there they will lie until an earthquake shakes them down, or until the wasting of the rock on which they rest precipitates...
Pàgina 184 - found fragments of marine shells of the drift, in the cave, overlying the detritus that held the bones of elephants and other mammalia."!
Pàgina viii - An entire new chapter has been added on the origin of the river courses of Britain ; and large additions have been made to the earlier brief account of soils, and the economic products of the various geological formations. There are also many new illustrative sections.