Contributions to the Physical History of the British Isles: With a Dissertation on the Origin of Western Europe, and of the Atlantic OceanE. Stanford, 1882 - 143 páginas |
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Contributions to the Physical History of the British Isles: With a ... Edward Hull Visualização integral - 1882 |
Contributions to the Physical History of the British Isles: With a ... Edward Hull Pré-visualização indisponível - 2018 |
Contributions to the Physical History of the British Isles. with a ... Edward Hull Pré-visualização indisponível - 2015 |
Palavras e frases frequentes
1.-Geological Map 2.-Distribution of land adjoining amongst Archæan Atlantic Ocean basin Belgium Boulder Clay British area British Islands British Isles calcareous Cambrian Carboniferous limestone Carboniferous period central centre Chalk coal-measures coast conglomerate continent Cretaceous denudation deposited depression Devonian Devonian beds Devono-Silurian beds Dingle direction districts Dublin east elevation Eocene epoch Europe extended fauna feet foraminifera formed France Geikie Geol geological periods geologists glacial gravels Greensand grit Journ Jurassic lakes Lancashire land and sea land area land surface Laurentian Lower Carboniferous Lower Silurian marine materials metamorphism Millstone grit mountains North Atlantic northern Old Red Sandstone older formation Oolitic origin outer Hebrides Paleozoic Permian PHYSICAL MAPS Plate portions probably Quart region represented ridge rocks sand Scotland sediment sedimentary shale shore beds Silurian beds south of England south of Ireland strata Submerged Areas Tertiary thickness tion tracts Triassic Upper Boulder Clay Upper Silurian waters western
Passagens conhecidas
Página 23 - The present continental ridges have probably always existed in some form, and as a corollary we may infer that the present deep ocean basins likewise date from the remotest geological antiquity.
Página i - Director of the Geological Survey of Ireland, and Professor of Geology in the Royal College of Science, Dublin.
Página 44 - Ocean,1' will be read with amazement by those who have watched the progress of recent research on this question. The author begins it by the following oracular announcement : " I date the genesis of the North Atlantic Ocean, properly so called, from the close of the Carboniferous period ; and, consequently, from the same period, that of the British Isles and Western Europe.
Página 131 - The submergence continued until the land must have sunk more than 2,000 feet below its present level, as the position of boulders in many parts of the district seem to show, and notably those on Starling Dodd (see page 93, also Quart. Journ. Geol. Soc. vol. xxix. p. 437, and vol. xxx. p. 96). Then the whole district was represented merely by scattered islands clad in snow and ice, each a little nursery of icebergs. " As the land was re-elevated, the glaciers crept down to the level of the sea, sometimes...
Página 23 - There seems very good reason to believe that few, if any, of the rocks known to geologists correspond exactly to the deposits now forming at the bottom of our great oceans.
Página 84 - ... the Lower Carboniferous stage the sea everywhere occupied the submerged tracts, bathing the sides of the uplands and mountainous parts, and bringing with it multitudes of marine animals, so that the oldest Carboniferous strata in Ireland, England, Wales, and Scotland contain numerous marine forms. During the subsequent epoch of the Carboniferous limestone the depression proceeded, and the sea ascended on the flanks of the uplands until only the very highest elevations were left uncovered. Deep-sea...
Página 87 - ... periods," as he was most happily termed by Murchison, we may apply to him the well-worn but, in his case, most true phrase, nihil Ml/fit quod turn ornavit. One paper only from his pen I will, in conclusion, especially mention, because, to my mind, it is most typical of all his work, namely, that " On the Possible Extension of the Coal-measures beneath the South-eastern parts of England.
Página 84 - Physical History of the British Isles," folio 84, says : — " On the commencement of the Lower Carboniferous stage the sea everywhere occupied the submerged tracts, bathing the sides of the uplands and mountainous parts, and bringing with it multitudes of marine animals, so that the oldest Carboniferous strata in Ireland, England, Wales, and Scotland contain numerous marine forms. During the subsequent epoch of the Carboniferous limestone the depression proceeded, and the sea ascended on the flanks...
Página 7 - Hull, although he states that in some cases the distance is much greater, as, for instance, in that of the Amazon, the muddy water from which discolours the ocean at the surface for several hundred miles, and by the time the mud subsides, it must reach to much greater distances. Thus (as he observes) the fact that sediment will tend to increase in thickness in the direction of its source, furnishes us with a valuable guide for the determination of the directions towards which we are to look, for...
Página 69 - These are faithful line for line transcriptions, as far as wood can give them, of the original copper-plates ; and, this being the case, it is not to be wondered at that the public, who, for a few • pence can have practical facsimiles of Blake, of Cruikshank, or of Whistler, are loud in their appreciation of the