The Geological ObserverLongman, Brown, Green, and Longmans, 1853 - 740 стор. |
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Сторінка xiii
... minor scale , by heat - Formation of crystals in altered rocks - Crystalline modifi- cation of rocks - Alteration of rocks near granitic masses - Readjustment of parts of igneous rocks - Production of certain minerals in altered rocks ...
... minor scale , by heat - Formation of crystals in altered rocks - Crystalline modifi- cation of rocks - Alteration of rocks near granitic masses - Readjustment of parts of igneous rocks - Production of certain minerals in altered rocks ...
Сторінка xiv
... minor fissures - Solubility and deposit of mineral matter in fissures - Solubility of sulphate of baryta— Deposits from solutions in fissures - Effects produced in heated fissures beneath seas - Many similar substances found in mineral ...
... minor fissures - Solubility and deposit of mineral matter in fissures - Solubility of sulphate of baryta— Deposits from solutions in fissures - Effects produced in heated fissures beneath seas - Many similar substances found in mineral ...
Сторінка xx
... minor divisions , showing the constancy or modification of conditions , as the case may be , over the minor areas , are important , inasmuch as it is by a correct appreciation of this detail and the careful consideration of how much may ...
... minor divisions , showing the constancy or modification of conditions , as the case may be , over the minor areas , are important , inasmuch as it is by a correct appreciation of this detail and the careful consideration of how much may ...
Сторінка xxi
... minor and major divisions may be effected in the general mass which shall represent the kinds of sea - bottoms marking given and succeeding geological times . Without , in the least , doubting that very great modification may be found ...
... minor and major divisions may be effected in the general mass which shall represent the kinds of sea - bottoms marking given and succeeding geological times . Without , in the least , doubting that very great modification may be found ...
Сторінка 26
... minor floods , commonly known as freshets , more or less common in all rivers , are geologically important , not only as respects the greater movement outwards of detrital matter at such times by the mechanical action of the water , but ...
... minor floods , commonly known as freshets , more or less common in all rivers , are geologically important , not only as respects the greater movement outwards of detrital matter at such times by the mechanical action of the water , but ...
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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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