Nature, Volume 39Nature Publishing Group, 1889 |
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Página 90
... rocks are the gneisses and schists- the latter term , often vaguely used , I always restrict to rocks which exhibit a true foliation . In some schists the mineral constituents are comparatively minute , in others they are of ...
... rocks are the gneisses and schists- the latter term , often vaguely used , I always restrict to rocks which exhibit a true foliation . In some schists the mineral constituents are comparatively minute , in others they are of ...
Página 92
... rocks upon other rocks . These may be either igneous rocks already solidified , or sedimentary rocks . The former may be pas ed over , as they will not materially help us . In regard to the latter , the results of contact - metamorphism ...
... rocks upon other rocks . These may be either igneous rocks already solidified , or sedimentary rocks . The former may be pas ed over , as they will not materially help us . In regard to the latter , the results of contact - metamorphism ...
Página 272
... rock of geological antiquity , which offer close analogy in aspect and structure to the materials which are deposited under our very eyes by fluviatile and marine action . This comparison leads us to regard the old stratified rocks as ...
... rock of geological antiquity , which offer close analogy in aspect and structure to the materials which are deposited under our very eyes by fluviatile and marine action . This comparison leads us to regard the old stratified rocks as ...
Índice
Launay L de Dilocations of Primitive Formations of North | 19 |
Lawson Inspector General R Deaths from Lightning 623 | 67 |
Holz Herr Dibromide of Crotonylene 467 | 71 |
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acid Algæ Annelids anticyclone appears Astronomical augite birds body British Cambrian character chemical College colour comet contains crystals December Decl described direction effect electric energy exhibited experiments fact feet geological give given Greenwich mean Gresham College haze heat important interesting investigation Islands January lava lectures light London magnetic mass matter means measure ment mesenteries metals meteorites method millimetres mineral mineral banding molecules motion muscles Museum natural selection nerves November observations Observatory obtained Olenellus organic origin Origin of Species P. L. Sclater paper particles phenomena photographs plants plates present probably produced Prof quartzite recent reference regard region remarkable rocks rotation Royal schists scientific Society species specimens stars structure substance surface temperature theory tion vapour Variable Stars velocity volume