The Geology and Extinct Volcanos of Central France |
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Page x
... vast influence exercised on the crust of the earth , not only by volcanic outbursts , but also by the erosive forces of rain and rivers , acting slowly and gradually , but through periods of immeasurable duration , upon the surface of ...
... vast influence exercised on the crust of the earth , not only by volcanic outbursts , but also by the erosive forces of rain and rivers , acting slowly and gradually , but through periods of immeasurable duration , upon the surface of ...
Page xvi
... vast Currents of Clinkstone and Basalt- Breccias . 2. More recent Eruptions - Subsequent Excavation of Valleys- Human Bones in Volcanic Tuff - Volcanos of the Haut Vivarais . CHAPTER IX . .. 197 CONCLUDING REMARKS Age of Volcanic Rocks ...
... vast Currents of Clinkstone and Basalt- Breccias . 2. More recent Eruptions - Subsequent Excavation of Valleys- Human Bones in Volcanic Tuff - Volcanos of the Haut Vivarais . CHAPTER IX . .. 197 CONCLUDING REMARKS Age of Volcanic Rocks ...
Page 1
... vast plain , whose waters flow gently towards the north and west through the Seine and the lower Loire . South of this line the surface continues to rise with a gradual slope , so as to form an inclined plane , which progressively ...
... vast plain , whose waters flow gently towards the north and west through the Seine and the lower Loire . South of this line the surface continues to rise with a gradual slope , so as to form an inclined plane , which progressively ...
Page 4
... vast elevated platform , sloping gradually from the primary range towards the south - west , and intersected by a few deep gorges , scarcely wider anywhere than the bed of the river that flows at the bottom of each . The stratification ...
... vast elevated platform , sloping gradually from the primary range towards the south - west , and intersected by a few deep gorges , scarcely wider anywhere than the bed of the river that flows at the bottom of each . The stratification ...
Page 19
... vast masses of calcareous matter ( of the Plio- cene tertiary formation ) lay in a pulpy unconsolidated state ; the former of eruptions through a similar mass , the deposit of a freshwater lake . The great variety of rare and beautiful ...
... vast masses of calcareous matter ( of the Plio- cene tertiary formation ) lay in a pulpy unconsolidated state ; the former of eruptions through a similar mass , the deposit of a freshwater lake . The great variety of rare and beautiful ...
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Common terms and phrases
Allier ancient appears Ardèche augite Auvergne basin bed of basalt breccia calcareous calcareous peperino Cantal cellular Central France chain of puys channel character Clermont clinkstone colour columnar compact conglomerate considerable contains covered crater Crown 8vo current of lava deposits distance district domite dyke east Edition elevation eruption evidently excavation Fcap feet felspar fissures flowed formed fragments freshwater formation geologists Gergovia gneiss granitic platform Graveneire Haute Loire heights hill Illustrations lacustrine lake lava lava-current Le Puy Limagne limestone marls mass matter Mezen miles Mont Dore Monts Dôme mountain neighbouring numerous observed occupied olivine Pariou peperino plain Plate plateau points Pomel Pont Portrait Post 8vo prisms probably Puy de Dôme recent remarkable ridge rise river rock sandstone scoriæ side Sioule slope strata stream of lava substance summit surface tertiary thick tion trachyte tuff valley vent Vivarais volcanic cones Vols Woodcuts
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