Rocks Classified and Described: A Treatise on LithologyLongmans, Green, and Company, 1866 - 425 páginas |
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Página 1
... SUBSTANCES which form the materials of the earth's crust are termed Rocks , ' the idea of a solid rocky substance not being necessarily implied . Most of what we call rocks are no doubt of a firm and solid character , but some consist ...
... SUBSTANCES which form the materials of the earth's crust are termed Rocks , ' the idea of a solid rocky substance not being necessarily implied . Most of what we call rocks are no doubt of a firm and solid character , but some consist ...
Página 29
... substances held in . solution by the per- colated water to which they owe their origin , but rather products of the chemical action of that water at a high degree of temperature on a portion of the rock's mass which had already oozed ...
... substances held in . solution by the per- colated water to which they owe their origin , but rather products of the chemical action of that water at a high degree of temperature on a portion of the rock's mass which had already oozed ...
Página 35
... substances contained in its crystals . These foreign substances are arranged in some sort symmetrically about the edges and axis so as to give a tes- selated appearance in the section . The crystals are mostly twins or fourfold . ] Cp ...
... substances contained in its crystals . These foreign substances are arranged in some sort symmetrically about the edges and axis so as to give a tes- selated appearance in the section . The crystals are mostly twins or fourfold . ] Cp ...
Página 72
... substances , and this will account for its often being found in the form of fossils . Wöhler has produced artificial pyrites by slowly heating oxide of iron , together with sulphur and sal - ammoniac . 116. Marcasite ( White Iron ...
... substances , and this will account for its often being found in the form of fossils . Wöhler has produced artificial pyrites by slowly heating oxide of iron , together with sulphur and sal - ammoniac . 116. Marcasite ( White Iron ...
Página 76
... substance , and frequently insects and fragments of plants are enclosed in it . Fracture perfectly conchoidal ... substances , of which the most important are naphtha and asphalte . ( a ) Naphtha , a volatile , and , when pure ...
... substance , and frequently insects and fragments of plants are enclosed in it . Fracture perfectly conchoidal ... substances , of which the most important are naphtha and asphalte . ( a ) Naphtha , a volatile , and , when pure ...
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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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