The Geology and Extinct Volcanos of Central France |
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Page 4
... limestone strata , belonging to the lias and oolite group , embraces ( as has been before observed ) the whole granitic platform like a frame ; on its southern border especially , these calcareous rocks assume a remarkable develop- ment ...
... limestone strata , belonging to the lias and oolite group , embraces ( as has been before observed ) the whole granitic platform like a frame ; on its southern border especially , these calcareous rocks assume a remarkable develop- ment ...
Page 5
... blue schistose marls or sandstone , and occasionally by magnesian limestone , especially in the departments of Dordogne , Lot , and Aveyron . CHAPTER II . TERTIARY FORMATIONS . SOME three or four CHAP . I. 5 SECONDARY FORMATIONS .
... blue schistose marls or sandstone , and occasionally by magnesian limestone , especially in the departments of Dordogne , Lot , and Aveyron . CHAPTER II . TERTIARY FORMATIONS . SOME three or four CHAP . I. 5 SECONDARY FORMATIONS .
Page 6
... limestone , and sandstone , fre- quently containing the remains of numerous species of fresh- water mollusks , under such circumstances as to show that they were deposited for the most part in tranquillity along the shores and at the ...
... limestone , and sandstone , fre- quently containing the remains of numerous species of fresh- water mollusks , under such circumstances as to show that they were deposited for the most part in tranquillity along the shores and at the ...
Page 7
... limestone , none of which observe a fixed and invariable order of superposition . Several hills also composed of the same strata rise from the plain , generally connected more or less with the granite ranges on either side . They were ...
... limestone , none of which observe a fixed and invariable order of superposition . Several hills also composed of the same strata rise from the plain , generally connected more or less with the granite ranges on either side . They were ...
Page 8
... limestone or travertin , often oolitic . 66 1. The sandstones and conglomerates forming the first or lowest of these divisions were considered by M. Brongniart , who gave them the name of " Arkose , " to be of secondary and marine ...
... limestone or travertin , often oolitic . 66 1. The sandstones and conglomerates forming the first or lowest of these divisions were considered by M. Brongniart , who gave them the name of " Arkose , " to be of secondary and marine ...
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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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