The Encyclopedia britannica; a dictionary of arts, sciences, and general literatureWith new maps, and original American articles by eminent writersWith American revisions and additions, bringing each volume up to date . the American system,—the LowerSilurian and perhaps the Upper Cambrian of the BritishIsles. It consists chiefly of slates and conglomerates, withthe sandstones of the Chilhowee group above. ^bovcthese last are the Knox dolomite group, with its shalciand limestone more separated from the other two groupsand perhaps not exactly corresponding to any other recog-nized formations. Th
The Encyclopedia britannica; a dictionary of arts, sciences, and general literatureWith new maps, and original American articles by eminent writersWith American revisions and additions, bringing each volume up to date . the American system,—the LowerSilurian and perhaps the Upper Cambrian of the BritishIsles. It consists chiefly of slates and conglomerates, withthe sandstones of the Chilhowee group above. ^bovcthese last are the Knox dolomite group, with its shalciand limestone more separated from the other two groupsand perhaps not exactly corresponding to any other recog-nized formations. The crystalline metamorphic rocks aremainly syenitic and micaceous gneiss, with micaceous, horn?blendic, and talcose schists. Occasional small dykes ofdiorite, greenstone, and basalt traverse these rocks, sometimes interstratified, but oftener breaking through them 2. The rocks of the first division are tilted at \ery higlangles; those of the second division, the eastern valley otthe Tennessee, are fractured and distorted at nearly everyconceivable angle, and, in consequence, it is the edges olthe liplifted strata which here form the surface. The stratahavs been eaten away to form valleys, or. left gtandinf; ei.
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Keywords: ., bookcentury1800, bookdecade1890, bookidencyclopedia, bookyear1892
