The Student's Handbook of Physical GeologyG. Bell, 1892 - 666 pages |
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Page vii
... kind enough to read . For the revision of the chapters on Igneous Rocks I am responsible , but the alterations have Professor Bonney's approbation , and most of what was written by him for the first edition has been incorporated . Most ...
... kind enough to read . For the revision of the chapters on Igneous Rocks I am responsible , but the alterations have Professor Bonney's approbation , and most of what was written by him for the first edition has been incorporated . Most ...
Page 22
... kind may be termed explosive erup- tions , and the other kind non - explosive eruptions . A. Explosive Eruptions . - These usually exhibit the fol- lowing succession of phenomena . The first intimations of the disturbance are generally ...
... kind may be termed explosive erup- tions , and the other kind non - explosive eruptions . A. Explosive Eruptions . - These usually exhibit the fol- lowing succession of phenomena . The first intimations of the disturbance are generally ...
Page 24
... kind are thrown up from points along the fissures which are rent through the mountain . The rise of the lava in the central pipe of the volcano is generally slow , sometimes rising and falling again , till it either flows over the lip ...
... kind are thrown up from points along the fissures which are rent through the mountain . The rise of the lava in the central pipe of the volcano is generally slow , sometimes rising and falling again , till it either flows over the lip ...
Page 25
... kind of eruptions is chiefly derived from the volcanoes of Hawaii in the Pacific Ocean . Products of an Eruption . - These may be classified and described in the following order : -1 . Steam and gases ; 2. Stones and ashes ; 3. Lava . 1 ...
... kind of eruptions is chiefly derived from the volcanoes of Hawaii in the Pacific Ocean . Products of an Eruption . - These may be classified and described in the following order : -1 . Steam and gases ; 2. Stones and ashes ; 3. Lava . 1 ...
Page 28
... kind of mud , which sets into a firm , but light and porous stone , and is known by the name of tuff or tufa . It often encloses and is partly made up of lapilli , scoriæ , and broken crystals , and is then generally known as volcanic ...
... kind of mud , which sets into a firm , but light and porous stone , and is known by the name of tuff or tufa . It often encloses and is partly made up of lapilli , scoriæ , and broken crystals , and is then generally known as volcanic ...
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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