The Geological ObserverLongman, Brown, Green, and Longmans, 1853 - 740 стор. |
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Сторінка xv
... beneath that surface ; by the wearing away and removal to other localities of this matter , either in its first ... beneath waters , and by the unquiet state of the earth's surface itself , from which , while consi- derable areas have ...
... beneath that surface ; by the wearing away and removal to other localities of this matter , either in its first ... beneath waters , and by the unquiet state of the earth's surface itself , from which , while consi- derable areas have ...
Сторінка xxvii
Henry Thomas De La Beche. such beds of rock were deeply buried beneath great accumulations of mineral matter , have to be carefully considered , if the tempera- ture increases in the manner usually inferred as we descend beneath the ...
Henry Thomas De La Beche. such beds of rock were deeply buried beneath great accumulations of mineral matter , have to be carefully considered , if the tempera- ture increases in the manner usually inferred as we descend beneath the ...
Сторінка 3
... beneath from that decomposition which it would otherwise have suffered . In many granitic regions ample opportunities are afforded of observing the amount of decomposition thus produced ; high tors or bosses of rock rising above a ...
... beneath from that decomposition which it would otherwise have suffered . In many granitic regions ample opportunities are afforded of observing the amount of decomposition thus produced ; high tors or bosses of rock rising above a ...
Сторінка 9
... beneath ( fig . 7 ) . * Fig . 7 . a a The division of rock masses by cleavage greatly aids their decomposition , since it renders them slaty , when this would not happen from any original accumulation of sand or mud in thin layers , one ...
... beneath ( fig . 7 ) . * Fig . 7 . a a The division of rock masses by cleavage greatly aids their decomposition , since it renders them slaty , when this would not happen from any original accumulation of sand or mud in thin layers , one ...
Сторінка 18
... beneath . Thermal springs , not in volcanic countries , have been traced either immediately to these dislocations , or the evidence has been such as to lead us to suppose that they may be merely covered over by beds , through which a ...
... beneath . Thermal springs , not in volcanic countries , have been traced either immediately to these dislocations , or the evidence has been such as to lead us to suppose that they may be merely covered over by beds , through which a ...
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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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