. Elements of geology, or, The ancient changes of the earth and its inhabitants as illustrated by geological monuments. Geology. Curved strata of the Iselten Alp. again. There are many flexures not inferior in dimensions in the Pyre- nees, as those near Gavarnie, at the base of Mount Perdu. Unconformable stratification.—Strata are said to be unconformable, when one series is so placed over another, that the planes of the superior repose on the edges of the inferior (see fig. 83). In this case it is evi- Fig. Unconformable junction of old red 6andstone and Silurian schist at the Siccar Poi
. Elements of geology, or, The ancient changes of the earth and its inhabitants as illustrated by geological monuments. Geology. Curved strata of the Iselten Alp. again. There are many flexures not inferior in dimensions in the Pyre- nees, as those near Gavarnie, at the base of Mount Perdu. Unconformable stratification.—Strata are said to be unconformable, when one series is so placed over another, that the planes of the superior repose on the edges of the inferior (see fig. 83). In this case it is evi- Fig. Unconformable junction of old red 6andstone and Silurian schist at the Siccar Point, near St. Abb's Head, Berwickshire. See also Frontispiece. dent that a period had elapsed between the production of the two sets of strata, and that, during this interval, the older series had been tilted. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Lyell, Charles, Sir, 1797-1875. New York, D. Appleton and co.
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Keywords: ., bookcentury1800, bookdecade1860, booksubjectgeology, bookyear1868
