The Geology and Extinct Volcanos of Central France |
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... probably be found in Auvergne and the neighbouring districts - a country where the products of extinct volcanos are brought into contact with some of the earliest crystalline rocks , as well as with the most recent ( tertiary and ...
... probably be found in Auvergne and the neighbouring districts - a country where the products of extinct volcanos are brought into contact with some of the earliest crystalline rocks , as well as with the most recent ( tertiary and ...
Page vi
... probably be found in Auvergne and the neighbouring districts - a country where the products of extinct volcanos are brought into contact with some of the earliest crystalline rocks , as well as with the most recent ( tertiary and ...
... probably be found in Auvergne and the neighbouring districts - a country where the products of extinct volcanos are brought into contact with some of the earliest crystalline rocks , as well as with the most recent ( tertiary and ...
Page 3
... probably Devonian , and accompanied with anthracite , has been penetrated by a large outburst of red porphyry , the entire region of Central France contains , I believe , scarcely any sedimentary strata more ancient than the ...
... probably Devonian , and accompanied with anthracite , has been penetrated by a large outburst of red porphyry , the entire region of Central France contains , I believe , scarcely any sedimentary strata more ancient than the ...
Page 6
... probably through the effect of some of the subterranean convulsions of which this country has evidently been the theatre ; and these lacustrine strata have been cut through , worn down , and degraded by the usual denuding agencies ...
... probably through the effect of some of the subterranean convulsions of which this country has evidently been the theatre ; and these lacustrine strata have been cut through , worn down , and degraded by the usual denuding agencies ...
Page 15
... probably see in this fact some analogy to the arrangement of the layers of flint nodules in common chalk strata . * I have observed strata of this character on the mountain of Gergovia and several other points ; but the most remarkable ...
... probably see in this fact some analogy to the arrangement of the layers of flint nodules in common chalk strata . * I have observed strata of this character on the mountain of Gergovia and several other points ; but the most remarkable ...
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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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