Class-book of GeologyMacmillan, 1896 - 404 páginas |
Dentro del libro
Página xvi
Archibald Geikie. FIG . PAGE 25. Ice - striation on the floor and side of a valley 67 26. Buller of Buchan - a caldron - shaped cavity or blow - hole worn out of granite by the sea ... floor of Antarctic Ocean , magnified 300 diameters 84 ...
Archibald Geikie. FIG . PAGE 25. Ice - striation on the floor and side of a valley 67 26. Buller of Buchan - a caldron - shaped cavity or blow - hole worn out of granite by the sea ... floor of Antarctic Ocean , magnified 300 diameters 84 ...
Página 70
... floor , ready to be raised again into land at some future time . i . Demolition of the Land . In its work of destruction along the coasts of the land , the sea acts to some extent ( though we do not yet know how far ) by chemically ...
... floor , ready to be raised again into land at some future time . i . Demolition of the Land . In its work of destruction along the coasts of the land , the sea acts to some extent ( though we do not yet know how far ) by chemically ...
Página 75
... sea , no longer able to wear it down further , protects it from injury by other agents of demolition . This lower ... floor of the ocean . Beginning at the shore , let us trace the various VII 75 MARINE DEPOSITS.
... sea , no longer able to wear it down further , protects it from injury by other agents of demolition . This lower ... floor of the ocean . Beginning at the shore , let us trace the various VII 75 MARINE DEPOSITS.
Página 76
... floors of the great ocean - abysses . In many places , the sea is more or less barred back by the accumu- lation of sediment worn away from the land . In estuaries , for example , there is often such an amount of mud in the water that the ...
... floors of the great ocean - abysses . In many places , the sea is more or less barred back by the accumu- lation of sediment worn away from the land . In estuaries , for example , there is often such an amount of mud in the water that the ...
Página 77
Archibald Geikie. filled up the bottom of the valley , but has advanced into the Mediterranean . Turning now to the deposits that are more distinctively those of the sea itself , we find that ridges of coarse shingle , gravel , and sand ...
Archibald Geikie. filled up the bottom of the valley , but has advanced into the Mediterranean . Turning now to the deposits that are more distinctively those of the sea itself , we find that ridges of coarse shingle , gravel , and sand ...
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Términos y frases comunes
abundant abundantly accumulated acid Ammonites basin beds bones bottom Brachiopods calcareous calcite Cambrian carbonate of lime Carboniferous Chapter characteristic chiefly clay containing corals Cretaceous crinoids crystalline crystals decay deposits detritus Devonian earth earth's crust Eocene eruptive rocks Europe evidence extinct fauna feet thick felspar fishes fissures formations fossils genera geological history geologist glacier globe gneiss gradually granite gravel ground iron Jurassic kinds known lakes land lava layers limestone living lower marine marls mass materials Mesozoic miles Miocene molten mountains natural North occur Old Red Sandstone organic remains original Palæozoic period Permian plants and animals Pliocene present preserved probably quartz rain regions represented rivers sand schists sea-floor sediment sedimentary rocks shales sheets shells siliceous Silurian slopes soil solid sometimes species stone strata stratified stream structure substance surface terrestrial Tertiary trace Triassic Trilobites upper valley various vegetation vent volcanic