Earth Sculpture; Or, The Origin of Land-forms |
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Page viii
... IGNEOUS ACTION . . Plutonic and Volcanic Rocks - Deformation of Surface caused by Intrusions - Laccoliths of Henry Mountains - Volcanoes , Structure and Form of Mud - cones - Geysers - Fissure - eruptions - Volcanic Plateaux ...
... IGNEOUS ACTION . . Plutonic and Volcanic Rocks - Deformation of Surface caused by Intrusions - Laccoliths of Henry Mountains - Volcanoes , Structure and Form of Mud - cones - Geysers - Fissure - eruptions - Volcanic Plateaux ...
Page 3
... rock , one set be- ing of igneous origin , while the other appears to con- sist mainly of the products of water action . These last are typically represented by such rocks as con- glomerate , sandstone , and shale , which are only more ...
... rock , one set be- ing of igneous origin , while the other appears to con- sist mainly of the products of water action . These last are typically represented by such rocks as con- glomerate , sandstone , and shale , which are only more ...
Page 4
... igneous rocks consist partly of lavas and frag- mental materials which have been ejected at the sur- face , as in modern volcanoes , and partly of formerly molten masses which have cooled and consolidated below ground . The former ...
... igneous rocks consist partly of lavas and frag- mental materials which have been ejected at the sur- face , as in modern volcanoes , and partly of formerly molten masses which have cooled and consolidated below ground . The former ...
Page 5
... rocks . They are typically repre- sented by such rocks as gneiss , mica - schist , clay - slate , etc. The derivative rocks , with which in many regions igneous rocks are associated , occupy by far the larger portion of the land ...
... rocks . They are typically repre- sented by such rocks as gneiss , mica - schist , clay - slate , etc. The derivative rocks , with which in many regions igneous rocks are associated , occupy by far the larger portion of the land ...
Page 6
... rocks do not appear at the sur- face over such extensive areas as those just ... igneous and others of aqueous formation . Those which form the nuclei of the ... rocks , with associated granites and other igneous rocks , seem everywhere ...
... rocks do not appear at the sur- face over such extensive areas as those just ... igneous and others of aqueous formation . Those which form the nuclei of the ... rocks , with associated granites and other igneous rocks , seem everywhere ...
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Common terms and phrases
accumulation Alpine Alps anticlines basalt base-level basins become beds boulder-clay Carboniferous character cirques cliffs coast-lines coasts configuration Cretaceous crust crustal movements crystalline débris denudation deposits depressions depth detritus direction dislocations drainage elevation epigene epigene action epigene agents eroded escarpments feet fiords flow fluvio-glacial fluvio-glacial deposits folds gently geological structure glacial action glacial erosion glaciers gradually ground-moraines hills hollows horizontal strata ice-flow ice-sheet igneous rocks inclined indented infrequently irregular islands joints kind laccoliths lakes land land-forms land-surface lava less limestone low grounds materials mer de glace modified moraines mountain-chain mountain-valleys mountains névé normal faults Old Red Sandstone outcrops owe their origin plain of erosion plateau regions relatively result ridges rock-basins rock-masses sand sandstone schistose schists SECTION sediment slopes Southern Uplands strata streams and rivers superficial surface surface-features synclinal tectonic tend thickness tion tracts traversed underground undulating usually valleys vertical volcanic wind