The Geology and Extinct Volcanos of Central France |
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Page 41
... ridge directed north and south , about twenty miles in length by two in breadth . * With the exception of five ( among which is the Puy de Dôme itself , the loftiest and most prominent of these hills ) , all of them are volcanic cones ...
... ridge directed north and south , about twenty miles in length by two in breadth . * With the exception of five ( among which is the Puy de Dôme itself , the loftiest and most prominent of these hills ) , all of them are volcanic cones ...
Page 42
... ridge , has been the result . One , the Puy de Montchié , has four distinct craters , which , however , are not visible till the hill is mounted . uneven It is probable that almost every one of these numerous vents has furnished its ...
... ridge , has been the result . One , the Puy de Montchié , has four distinct craters , which , however , are not visible till the hill is mounted . uneven It is probable that almost every one of these numerous vents has furnished its ...
Page 50
... ridge upon which they rest above the surrounding country renders it the last of all directions which such a current could have taken , and in spite of the improbability that a rocky bed of which the Puy de Dôme , a mass rising 1600 feet ...
... ridge upon which they rest above the surrounding country renders it the last of all directions which such a current could have taken , and in spite of the improbability that a rocky bed of which the Puy de Dôme , a mass rising 1600 feet ...
Page 54
... ridge of the surrounding crater the Puy de Gromanaux ( 38 ) . On the north side of the Puy de Dôme , and immediately contiguous to it , is another crater belong- ing to the Petit Puy de Dôme , to the description of which we proceed ...
... ridge of the surrounding crater the Puy de Gromanaux ( 38 ) . On the north side of the Puy de Dôme , and immediately contiguous to it , is another crater belong- ing to the Petit Puy de Dôme , to the description of which we proceed ...
Page 55
... ridge , running parallel to the inner one , appears to be the rim of an older crater defaced when that now existing ... ridges of the hills it unites . The fragmentary matters that compose the Great Suchet were apparently projected by ...
... ridge , running parallel to the inner one , appears to be the rim of an older crater defaced when that now existing ... ridges of the hills it unites . The fragmentary matters that compose the Great Suchet were apparently projected by ...
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Common terms and phrases
Allier appears Ardèche augite Auvergne basaltic currents basaltic lava base basin bed of basalt beneath breccia calcareous calcareous peperino Cantal cellular Central France chain of puys channel character Clermont clinkstone colour columnar compact composed conglomerate considerable contains covered crater crystals of augite current of lava deposits distance district domite dyke east elevation eruption evidently excavation feet felspar fissures flowed formed fragments freshwater formation geologists Gergovia gneiss granitic platform Graveneire Haute Loire heights hill lacustrine lake lava lava-current Le Puy Limagne limestone marls masses matter Mezen miles Mont Dore Monts Dôme mountain neighbouring numerous observed occupied olivine Pariou peperino plain Plate plateau points Pomel prisms probably Puy de Dôme puzzolana Ramond recent remarkable ridge rise river sandstone scoriæ seen side similar Sioule slope strata stream of lava substance summit surface tertiary thick tion torrents trachyte tuff valley vast vent Vivarais volcanic cone