Open-air Studies in Geology |
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Page 3
... region as the crust of the earth . This solid crust is made of rocks . Any workman in a quarry will tell us , for instance , that granite is a rock , or that sandstone is a rock . But , when we examine these two materials , we see that ...
... region as the crust of the earth . This solid crust is made of rocks . Any workman in a quarry will tell us , for instance , that granite is a rock , or that sandstone is a rock . But , when we examine these two materials , we see that ...
Page 34
... region they are still being deepened as the waters rush down daily . Of course the water often begins by flow- ing down some real crack in the rock , which it soon widens with its tools ; and thus you may see several gorges roughly ...
... region they are still being deepened as the waters rush down daily . Of course the water often begins by flow- ing down some real crack in the rock , which it soon widens with its tools ; and thus you may see several gorges roughly ...
Page 37
... regions . Air at any given temperature , however , can only absorb a certain quantity of water - vapour ; it then has reached its saturation - point , and must yield up some of its water - vapour in the liquid form again directly it ...
... regions . Air at any given temperature , however , can only absorb a certain quantity of water - vapour ; it then has reached its saturation - point , and must yield up some of its water - vapour in the liquid form again directly it ...
Page 38
... region of perpetual snow . Now , our British and Irish mountains are not so high as to reach above the local snow ... regions of the air , and disappear again in a gaseous form . But , as night comes on , clouds will gather all along the ...
... region of perpetual snow . Now , our British and Irish mountains are not so high as to reach above the local snow ... regions of the air , and disappear again in a gaseous form . But , as night comes on , clouds will gather all along the ...
Page 40
... region of violence and storm . Besides the mere bat- tering of rain and hail , all this moisture exerts a powerful chemical action . Rain , while falling , dissolves the gases of the air , and in proportions very different from those in ...
... region of violence and storm . Besides the mere bat- tering of rain and hail , all this moisture exerts a powerful chemical action . Rain , while falling , dissolves the gases of the air , and in proportions very different from those in ...
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Common terms and phrases
alluvial alluvium Alps andesite augite banks basalt become beds beneath blocks calcium carbonate Chalk character CHARLES GRIFFIN chemical clay cliffs coast colour cone Cretaceous Crown 8vo crust crystalline crystals denudation deposits dykes earth Engineer Eocene escarpment EXETER STREET feet felspars flint flow folded fossils Fully Illustrated Geol Geology glacier glass gneiss grains granite Handsome Cloth hills hollow Hornblende igneous iron Juras Jurassic lake Lake Bonneville land Large 8vo lava layers Leith Hill limestone LONDON lower marine mass material Mesozoic mica miles minerals Miocene mountain occur orthoclase oxide pebbles plain plane Plates Pliocene Practical produced Professor pyroxene quartz region Revised rhyolite ridge rise river rock round salts sand sandstone SECOND EDITION seen shells side silica slope specific gravity steep stones STRAND strata stream structure summit surface TEXT-BOOK unconformity upper valley volcanic Wealden wind
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