Rocks Classified and Described: A Treatise on LithologyLongmans, Green, and Company, 1866 - 425 páginas |
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Página x
... Jointed Structure STRATIFICATION OF ROCKS SHAPE AND BEDDING OF ROCK MASSES . CHAPTER IV . GEOLOGICAL FORMATIONS AND GROUPS OF ROCKS CHAPTER V. TRANSITIONS AND TRANSMUTATIONS PART II . THE ROCKS . INTRODUCTORY CHAPTER . CLASSIFICATION.
... Jointed Structure STRATIFICATION OF ROCKS SHAPE AND BEDDING OF ROCK MASSES . CHAPTER IV . GEOLOGICAL FORMATIONS AND GROUPS OF ROCKS CHAPTER V. TRANSITIONS AND TRANSMUTATIONS PART II . THE ROCKS . INTRODUCTORY CHAPTER . CLASSIFICATION.
Página 23
... transition to the chlorites . The same may be said of Sericite , a green mineral , of silky lustre , which is said to form the base of several crys- talline schists and clay - slates ; but it is not yet free from doubt whether or not ...
... transition to the chlorites . The same may be said of Sericite , a green mineral , of silky lustre , which is said to form the base of several crys- talline schists and clay - slates ; but it is not yet free from doubt whether or not ...
Página 81
... transition from a compact into a distinctly composite state ; for many rocks ( as we shall later have occasion to show ) are found to pass by gradual stages from an apparently homogeneous mass into states where their mineral ingredients ...
... transition from a compact into a distinctly composite state ; for many rocks ( as we shall later have occasion to show ) are found to pass by gradual stages from an apparently homogeneous mass into states where their mineral ingredients ...
Página 88
... transitions oc from one state to the other , and although the sa mineral combination may at one place be granular a at another compact . In the case of composite crystalline rocks formed the cooling of matter previously in a state of ...
... transitions oc from one state to the other , and although the sa mineral combination may at one place be granular a at another compact . In the case of composite crystalline rocks formed the cooling of matter previously in a state of ...
Página 92
... Transitions are found from the most delicate pencilling to the coarsest foliation . Linear elongation or fibrous texture consists of a kind of an apparent extension or elongation of individual parts , or of all the particles of a rock ...
... Transitions are found from the most delicate pencilling to the coarsest foliation . Linear elongation or fibrous texture consists of a kind of an apparent extension or elongation of individual parts , or of all the particles of a rock ...
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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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