Class-book of GeologyMacmillan and Company, 1886 - 516 páginas |
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Página xiii
... floor and side of a valley 90 26. Buller of Buchan - a caldron - shaped cavity or blow - hole worn out of granite by the sea on the coast of Aberdeenshire . 95 27. The Stacks of Duncansby , Caithness , a wave - beaten coast - line 28 ...
... floor and side of a valley 90 26. Buller of Buchan - a caldron - shaped cavity or blow - hole worn out of granite by the sea on the coast of Aberdeenshire . 95 27. The Stacks of Duncansby , Caithness , a wave - beaten coast - line 28 ...
Página 88
... Sea , carrying with it immense numbers of northern erratics . In Britain , where there are now neither glaciers nor ... floor of the valley . One remarkable feature of the stones in it is that a large proportion of them are ...
... Sea , carrying with it immense numbers of northern erratics . In Britain , where there are now neither glaciers nor ... floor of the valley . One remarkable feature of the stones in it is that a large proportion of them are ...
Página 94
... floor , ready to be raised again into land at some future time . I. Demolition of the Land . - In its work of destruc- tion 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 destruc- tion along the coasts of the land , the sea acts to some extent ( though we do not yet know how far ) by chemically ...
Página 101
... Sea . — It is not its erosive action that constitutes the most important claim of the sea to the careful study of ... floor of the ocean . Beginning at the shore , let us trace the various types of marine deposits outward to the ...
... Sea . — It is not its erosive action that constitutes the most important claim of the sea to the careful study of ... floor of the ocean . Beginning at the shore , let us trace the various types of marine deposits outward to the ...
Página 102
... sea , and there is a consequent arrest of its detritus . Hence , a bar is formed across the outflow of a river , which during floods is swept seawards , and during on - shore gales is driven again inland . Even where there is no large ...
... sea , and there is a consequent arrest of its detritus . Hence , a bar is formed across the outflow of a river , which during floods is swept seawards , and during on - shore gales is driven again inland . Even where there is no large ...
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Términos y frases comunes
abundant accumulated acid augite basin beds bones bottom Brachiopods calcareous calcite carbonate of lime Carboniferous chapter characteristic chiefly clay containing corals Cretaceous crinoids crystalline crystals cycads decay deposits detritus Devonian earth earth's crust Eocene Europe evidence example extinct fauna feet thick fishes fissures fossils genera geological history geologist glacier globe gradually granite gravel ground iron Jurassic kinds known lakes land lava layers limestone living lower marine marked marls masses materials Mesozoic miles mineral matter Miocene molten mountains natural North occur Old Red Sandstone organic remains original Paleozoic period Permian plants and animals Pliocene present preserved probably quartz rain records regions rivers salt 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 tion trace Triassic upper valley various vegetation veins vent volcanic