The New Encyclopaedia Britannica: A - K.Encyclopaedia Britannica, 2005 |
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Page 182
... grains forming the monomineralic rock dunite , in which the individual grains can scarcely be distinguished . ( Centre left ) Polished surface of the same rock specimen ( magnified 2X ) . Light green grains are olivine ; dark spots are ...
... grains forming the monomineralic rock dunite , in which the individual grains can scarcely be distinguished . ( Centre left ) Polished surface of the same rock specimen ( magnified 2X ) . Light green grains are olivine ; dark spots are ...
Page 234
... grains and by the spatial relationships of individual grains with one another and with any glass that may be present . Texture can be described independently of the entire rock mass , and its geometric characteristics provide valuable ...
... grains and by the spatial relationships of individual grains with one another and with any glass that may be present . Texture can be described independently of the entire rock mass , and its geometric characteristics provide valuable ...
Page 255
... grains , and the roundness of these particles . To evaluate this property , a scale of textural maturity that in- volved four textural stages was devised in 1951 ( see Figure 130 ) . These stages are described as follows . immature ...
... grains , and the roundness of these particles . To evaluate this property , a scale of textural maturity that in- volved four textural stages was devised in 1951 ( see Figure 130 ) . These stages are described as follows . immature ...
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albite amphiboles ancient aragonite areas atoms basalt bivalves body calcite calcium called carbonate central centre century cephalopods chemical clay minerals colour common composition contain crust crystals ctenidia cult cultural deities deposits developed dolomite Earth economic eggs electron evaporite example existence facies feldspar Figure garnet gastropods goddess gods grains Hittite human igneous rocks important industrial kaolinite king known layers limestone magma magnetic major mantle cavity marine material mental metamorphic rocks metaphysics Mexican Mexico City mica Michelangelo microscope millimetres Milton mimicry mind Mineralogy modern Molière Mongolia Mongols Moscow myth nature object occur ocean olivine organic originally oxide percent period philosophers physical plagioclase political population pressure produced properties pyroxene quartz reaction region religion religious reprinted result sandstones sedimentary rocks sediments shell silicate smectite snails society species structure Sumerian surface temperature temple tetrahedrons texture tion typically United urban volcanic