The Geological ObserverLongman, Brown, Green, and Longmans, 1853 - 740 стор. |
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Сторінка xv
... example , it is not unusual for the term tertiary , or tertiaries , to be applied to all accumulations posterior to the chalk of western Europe , while the other terms of secondary and primary or primitive , to which it has reference ...
... example , it is not unusual for the term tertiary , or tertiaries , to be applied to all accumulations posterior to the chalk of western Europe , while the other terms of secondary and primary or primitive , to which it has reference ...
Сторінка xxiii
... example , as regards the British islands , of a classification taken from organic remains in preference to the mode of occurrence of the rocks themselves , these groups here constituting parts of a general series of deposits with a ...
... example , as regards the British islands , of a classification taken from organic remains in preference to the mode of occurrence of the rocks themselves , these groups here constituting parts of a general series of deposits with a ...
Сторінка xxvi
... example , that of Carrara . We find quartz rocks ( that is , grains of quartz , accumulated as sands , and firmly cemented together by silica , the separation of the old surfaces of the sand - grains from the siliceous cement sometimes ...
... example , that of Carrara . We find quartz rocks ( that is , grains of quartz , accumulated as sands , and firmly cemented together by silica , the separation of the old surfaces of the sand - grains from the siliceous cement sometimes ...
Сторінка 7
... examples of this * This is often well shown in collections of antique marble statues . It was considered useless ... example as into the cavities of the Gryphæa incurva and other shells , in the lias of Glamorganshire , where silica ...
... examples of this * This is often well shown in collections of antique marble statues . It was considered useless ... example as into the cavities of the Gryphæa incurva and other shells , in the lias of Glamorganshire , where silica ...
Сторінка 13
... example , the remains of the temples at Pæstum , constructed of travertine , containing the remains of the same kinds of terrestrial and lacustrine shells which now exist in the vicinity , and become entombed in the travertine now ...
... example , the remains of the temples at Pæstum , constructed of travertine , containing the remains of the same kinds of terrestrial and lacustrine shells which now exist in the vicinity , and become entombed in the travertine now ...
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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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