. North American geology and palaeontology for the use of amateurs, students, and scientists [microform]. Paleontology; Paleontology; Geology; Paléontologie; Paléontologie; Géologie. Fin. I. Antlcllrinliixifi â tn. HIriiln dlNiiirlMMl, folilt'il. and ilciiiKlfil, ami BrttTward iincoii- foriiiHl)!!-Nlnitii di'iiiiH- Itfd iiiioii tlicni, fol- lowed liy conrorniulilp t''ia. 2. SecUnn of the Jura MnnntalnH,Illustrat- ing the folding i)f Htrnta, antiollnal uxIh at A and H. Hync'llna! nxlH hetweeii ^ and Hand between the intensity of any forces exceeded, iu titneH past, those which are n
. North American geology and palaeontology for the use of amateurs, students, and scientists [microform]. Paleontology; Paleontology; Geology; Paléontologie; Paléontologie; Géologie. Fin. I. Antlcllrinliixifi â tn. HIriiln dlNiiirlMMl, folilt'il. and ilciiiKlfil, ami BrttTward iincoii- foriiiHl)!!-Nlnitii di'iiiiH- Itfd iiiioii tlicni, fol- lowed liy conrorniulilp t''ia. 2. SecUnn of the Jura MnnntalnH,Illustrat- ing the folding i)f Htrnta, antiollnal uxIh at A and H. Hync'llna! nxlH hetweeii ^ and Hand between the intensity of any forces exceeded, iu titneH past, those which are now in activity. The changes which the earth has undergone within the scope of geological investigations were produced by the same laws, acting with the same degree of power, as those we may daily witness. This is true of aqueous and igneous action and of all organic and inorganic movements. )^ 8. An anticlinal axis is that line from which strata dip to either side. Tl)e ridje of a house-top, the slope of the roof rep- resenting the dip of the strata, will convey an idea of an anti- clinal axis; but an upheaval may be in the form of a dome, or the arc of a circle, and, in such case, the strata incline in all directions from a given point, which is the anticlinal axis. A synclinal axis is the reverse of an anticlinal axis. Roclcs are called ^ratified whether the planes of the beds are parallel to each other, or rest unconformably. Conformable strata have the planes of the beds parallel to each other, and unconformnhle strata have the planes of the strata of one bed resting upon the edges of the strata of another. This must necessarily mark an in- terval of time between the two which is not liC^S>^:t;^";^^^X^^,';:^ represented by a deposit. A fault is a dis- "i'-frbed and thrown mtowaven. location of strata so that the continuity of the mass is destroyed by one side of the fracture being elevated higher than the other. A dyhi is a wall of rock between the two s
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Keywords: ., boo, bookcentury1800, booksubjectgeology, booksubjectpaleontology
