Rocks Classified and Described: A Treatise on LithologyLongmans, Green, and Company, 1866 - 425 páginas |
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Página 37
... cause varieties to be specially named after it . [ See post . ] It is unknown in augitic and volcanic rocks . In dolomite it ap- pears exceptionally ( Capo Longo , south of St. Gotthard ) ; also in sandstone , but only in neighbourhood ...
... cause varieties to be specially named after it . [ See post . ] It is unknown in augitic and volcanic rocks . In dolomite it ap- pears exceptionally ( Capo Longo , south of St. Gotthard ) ; also in sandstone , but only in neighbourhood ...
Página 57
... caused by the evolution of carbonic acid . Limestone , marble , chalk , oolite , pisolite , coral , are some of the most important of the very numerous varieties which form independent rocks , and will be described hereafter as such ...
... caused by the evolution of carbonic acid . Limestone , marble , chalk , oolite , pisolite , coral , are some of the most important of the very numerous varieties which form independent rocks , and will be described hereafter as such ...
Página 82
... cause the compound to assume an acidic or a basic character ; thus , 5:11 would constitute an acidic compound , and 3 : 3 : 2 would constitute a basic compound . Bunsen endeavoured to set up two typical rocks , to be termed the ...
... cause the compound to assume an acidic or a basic character ; thus , 5:11 would constitute an acidic compound , and 3 : 3 : 2 would constitute a basic compound . Bunsen endeavoured to set up two typical rocks , to be termed the ...
Página 89
... a rock of this character , and the texture is termed schistose or foliated . ( b ) By some cause or causes , not to be discovered by mere ocular observation , the invisibly small mineral con- stituents or TEXTURE . 89.
... a rock of this character , and the texture is termed schistose or foliated . ( b ) By some cause or causes , not to be discovered by mere ocular observation , the invisibly small mineral con- stituents or TEXTURE . 89.
Página 90
... of Geology , pp . 71 , 93 , 95 , 96 , 100 , 101 , 218 , 381 , & c . All the above - named authorities agree , with very trifling excep- As respects the different causes of the above mentioned . 90 PHYSICAL STRUCTURE OF ROCKS .
... of Geology , pp . 71 , 93 , 95 , 96 , 100 , 101 , 218 , 381 , & c . All the above - named authorities agree , with very trifling excep- As respects the different causes of the above mentioned . 90 PHYSICAL STRUCTURE OF ROCKS .
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Términos y frases comunes
aggregates Alps amygdaloidal aphanite appear argillaceous augite basalt beds bitumen brown Browncoal calcareous calcspar carbonate character chemical chlorite clay clay-slate Cleavage coal colour Colourless columnar compact composition compound conchoidal to uneven consists contains Crown 8vo crystalline schists crystals decomposed deposits diabase diorite dolerite dolomite earth Edition felsitic felspar fibrous fine-grained foliated formation fossils Fracture conchoidal frequently fuses garnet geodes geol geological Germ gneiss grains granite granular grav greenstones grey gypsum hornblende igneous rocks imbedded iron Jahrb labradorite lavas leucite lime limestone Lustre vitreous magnesia magnetic iron-ore marl mass massive matrass matrix melaphyre metamorphic mica mica-schist mineral muriatic acid occurs oligoclase opaque origin orthoclase oxide plutonic porphyritic pyrites pyroxene quartz quartz-porphyry resinous rock-salt sandstone Saxony schists sedimentary rocks serpentine shale silica slaty soluble sometimes strata sulphuric surface syenite texture trachyte transition translucent transmutation Transparent tufa usually varieties veins vesicular cavities volcanic Woodcuts
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