The Student's Handbook of Physical GeologyG. Bell, 1892 - 666 pages |
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Page x
... Rivers • How a River is Formed . Laws of Flow . Transport of Detritus . Matter in Solution . Quantities of Transported Matter . Erosive Power . Vertical and Lateral Erosion . Rapidity of Erosion . Instances of River - erosion . CHAPTER ...
... Rivers • How a River is Formed . Laws of Flow . Transport of Detritus . Matter in Solution . Quantities of Transported Matter . Erosive Power . Vertical and Lateral Erosion . Rapidity of Erosion . Instances of River - erosion . CHAPTER ...
Page 29
... river , and flows far out from the base of the volcano ; but more usually it only preserves its fluidity for a short distance from the point of exit , a rough slaggy crust quickly form- ing over the surface of the coulée , though the ...
... river , and flows far out from the base of the volcano ; but more usually it only preserves its fluidity for a short distance from the point of exit , a rough slaggy crust quickly form- ing over the surface of the coulée , though the ...
Page 56
... rivers , and gave rise to new lakes . Thus enormous masses of land were detached from each side of the deep valley or ravine of Terranuova , and blocked up the course of the river , causing the formation of a large lake . It is stated ...
... rivers , and gave rise to new lakes . Thus enormous masses of land were detached from each side of the deep valley or ravine of Terranuova , and blocked up the course of the river , causing the formation of a large lake . It is stated ...
Page 62
... river , whence the water for irrigation had formerly been conducted . There was nothing in the appearance of the water - course to indi- cate that the river had not flowed there a few years pre- viously ; in some parts , beds of sand ...
... river , whence the water for irrigation had formerly been conducted . There was nothing in the appearance of the water - course to indi- cate that the river had not flowed there a few years pre- viously ; in some parts , beds of sand ...
Page 76
... rivers make their own valleys will be proved in a subsequent chapter , but their excavating power generally ceases long before they reach the sea , and in no case can a river deepen its channel more than a few feet below the low - tide ...
... rivers make their own valleys will be proved in a subsequent chapter , but their excavating power generally ceases long before they reach the sea , and in no case can a river deepen its channel more than a few feet below the low - tide ...
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Common terms and phrases
acid action agencies altered alumina amount anticlinal augite basalt beds blocks bottom calcareous calcite called carbonate of lime carbonic acid chalk channel chemical clay cleavage cliffs coast colour consists coral cracks crystalline crystals currents débris denudation deposits depth described detrition distance district dolerite dykes earth earth's crust Edited elevation erosion eruptions fault feet felspar fissures formation formed fragments Geol Geology glacier glauconite gneiss gradually granite greensand ground hills horizontal hornblende igneous rocks iron island Jukes lakes land lava layers limestone magnesia mass material metamorphic mica miles mineral mountain occur original Orthoclase outcrop oxide particles pebbles planes porphyritic portion pressure produced quartz rain reefs ridge rise river sand sandstone schist shale shells shore side siliceous slope soil solution sometimes stones strata stratified rocks stream structure surface thickness tion tract Translated unconformity valley vertical volcanic