Scenery, Science and Art: Being Extracts from the Note-book of a Geologist and Mining EngineerJ. Van Voorst, 1854 - 323 páginas |
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Página 4
... do not leave a large quantity of ash . The principal demand for this coal has hitherto arisen from numerous lime - kilns in the neighbourhood constructed on a large scale . These are said to require at least 4 FRANCE .
... do not leave a large quantity of ash . The principal demand for this coal has hitherto arisen from numerous lime - kilns in the neighbourhood constructed on a large scale . These are said to require at least 4 FRANCE .
Página 4
... do not leave a large quantity of ash . The principal demand for this coal has hitherto arisen from numerous lime - kilns in the neighbourhood constructed on a large scale . These are said to require at least 4 FRANCE .
... do not leave a large quantity of ash . The principal demand for this coal has hitherto arisen from numerous lime - kilns in the neighbourhood constructed on a large scale . These are said to require at least 4 FRANCE .
Página 7
... principal groups of coal - seams inclined at a considerable angle are also shown . Fig . 1. - Section across the coal - field of Ancenis . North . Lower group of coal seams . Upper group of coal seams . South . Wet beds . Grits . Grits ...
... principal groups of coal - seams inclined at a considerable angle are also shown . Fig . 1. - Section across the coal - field of Ancenis . North . Lower group of coal seams . Upper group of coal seams . South . Wet beds . Grits . Grits ...
Página 16
... principal bands of coal are within a thickness of 100 yards of measures . The lines of outcrop , though really continuous , are difficult to trace , and the actual relation they bear to each other is imper- fectly made out over most ...
... principal bands of coal are within a thickness of 100 yards of measures . The lines of outcrop , though really continuous , are difficult to trace , and the actual relation they bear to each other is imper- fectly made out over most ...
Página 17
... I learn that the coal has been lately reached by a shaft sunk through a moderate thickness of the new red sandstone , and that it is C The principal employment of the Rodez coal has hitherto been COAL AND IRON OF AVEYRON . 17.
... I learn that the coal has been lately reached by a shaft sunk through a moderate thickness of the new red sandstone , and that it is C The principal employment of the Rodez coal has hitherto been COAL AND IRON OF AVEYRON . 17.
Outras edições - Ver tudo
Scenery, Science and Art: Being Extracts from the Note-book of a Geologist ... David Thomas Ansted Visualização integral - 1854 |
Scenery, Science and Art: Being Extracts from the Note-book of a Geologist ... David Thomas Ansted Visualização integral - 1854 |
Scenery, Science and Art: Being Extracts from the Note-book of a Geologist ... David Thomas Ansted Visualização integral - 1854 |
Palavras e frases frequentes
abundant Algiers Alpujarras Amposta appears Aubin Aveyron bands basalt beauty beds Berja Cagliari chain character Cheliff Cherchel chiefly Chiffa coal coal-field coast coloured commenced considerable consists constructed copper crossing cultivated Délémont deposits distance district east Ebro elevation entering exist extending extremely feet France French gorge gossan granite ground hills houses inhabitants interesting interior island Kanawha kind labour land less limestone lode lofty Madrid Mediterranean miles mineral mines Moorish mountains Mouzäia natural nearly numerous obtained occasionally occupied Ohio oolite passing peculiar picturesque Pittsburg plains Porrentruy present principal Pyrenees pyrites quantity quartz range reached remarkable rich ridge rising river road rocks Rodez Roman Sahel sandstone Sardinia scenery schists seams seen shales side Sierra Nevada soon Spain Spanish stream surface Tarragona Tenez tertiary thickness tion town tract traveller valley various vegetation veins village walls whole
Passagens conhecidas
Página 292 - The ore in both cases is an auriferous pyrites, occurring in a whitish or white schist. The vein is worked at a depth of 90 feet or thereabouts, but has been proved to 160, and remains uniform. It yields about 6 dwts.