The Geological ObserverLongman, Brown, Green, and Longmans, 1853 - 740 стор. |
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Сторінка xxiii
... effected in other European countries . Of these divisions those of the Oxford clay and lias would appear much extended . * The Trias and Permian groups afford an example , as regards the British islands , of a classification taken from ...
... effected in other European countries . Of these divisions those of the Oxford clay and lias would appear much extended . * The Trias and Permian groups afford an example , as regards the British islands , of a classification taken from ...
Сторінка xxiv
... effected by the aid of water , and of earlier geological date than those last mentioned ( the Cambrian ) , there are many difficulties . Indeed the limits which may be assigned to the latter , in descending order , are , in the present ...
... effected by the aid of water , and of earlier geological date than those last mentioned ( the Cambrian ) , there are many difficulties . Indeed the limits which may be assigned to the latter , in descending order , are , in the present ...
Сторінка xxvi
... effected , such as that seen in statuary marble , when conditions were most favourable . When these bodies were less pure , mingled with detrital matter of the ordinary kinds , the circumstances would be favourable to the development of ...
... effected , such as that seen in statuary marble , when conditions were most favourable . When these bodies were less pure , mingled with detrital matter of the ordinary kinds , the circumstances would be favourable to the development of ...
Сторінка 14
... effected in tranquil bodies of water , such as lakes . We should expect , while the gradual rise and over- flow of the rivers may here and there bury , by means of the calcareous deposits from them , the fluviatile or lacustrine ...
... effected in tranquil bodies of water , such as lakes . We should expect , while the gradual rise and over- flow of the rivers may here and there bury , by means of the calcareous deposits from them , the fluviatile or lacustrine ...
Сторінка 15
... effected in the sea . Silica is well known as in solution in some waters ; chiefly , however , found in appreciable quantities in those which are thermal . The geysers of Iceland have been long celebrated for their abundant siliceous ...
... effected in the sea . Silica is well known as in solution in some waters ; chiefly , however , found in appreciable quantities in those which are thermal . The geysers of Iceland have been long celebrated for their abundant siliceous ...
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Загальні терміни та фрази
accumulations acid action alumina amid animals appear ashes beach beds beneath blocks bottom breakers British Islands calcareous carbonate carbonic acid cavities cinders clay cliffs coal coast considerable considered coral reefs Cornwall crater crystals deposits depth detritus district dry land earthquake Edition effected elevated eruption estuary evidence exposed fathoms feet felspar fissures formed fragments geological glaciers granite ground hornblende igneous rocks inferred kind lakes lava lime limestone magnesia manner marine mass mechanical suspension Mendip Hills miles mineral matter mode of occurrence modifications molluscs molten mountain noticed observer occur ocean old red sandstone oolitic organic remains pebbles portions present produced Professor quartz red sandstone regards regions respect rise river sand sea-bottom section fig seen shells shores side silicates Silurian Sir James Ross sometimes species specific gravity streams substances sufficient surface temperature thrown tidal tide tion trachytic traversed various vegetable veins volcanic
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