. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology; Zoology. 152 bulletin: museum of comparative zoology. the valleys will widen without much deepening at their mouths, the spurs will he narrowed, and the truncating terminal facets will in time be so far consumed that the spurs will become pointed, as in Figure 10. The further erosion progresses into maturity, the farther will the points. Figure 10. Diagram of tapering spurs between open valleys in a late mature stage of a tilted block; same scale as Figs. 6-8. of the wasting spurs withdraw from the fault line, and the
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology; Zoology. 152 bulletin: museum of comparative zoology. the valleys will widen without much deepening at their mouths, the spurs will he narrowed, and the truncating terminal facets will in time be so far consumed that the spurs will become pointed, as in Figure 10. The further erosion progresses into maturity, the farther will the points. Figure 10. Diagram of tapering spurs between open valleys in a late mature stage of a tilted block; same scale as Figs. 6-8. of the wasting spurs withdraw from the fault line, and the more perfect will be the relation of structure and form ; but as old age is reached this relation is more aud more suppressed. It is evident that late maturity or early old age will introduce the system of interlocking valleys and spurs already described as characteristic of subdued residual mountains. Sjours and Terminal Facets of the Wahsatch Range. — The Spanish Wahsatch, opposite the villages of Springville and Mapleton, presents a group of forms that resembles to a singular degree those represented in Figures 8 and 9. The mountain base has already been referred to as shown in Plate 1, B, an examination of which will now discover the pro- files of a series of basal spur-facets, sloping at an angle of 38° or 40°, and possessing remarkably systematic forms which correspond closely to. 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 Harvard University. Museum of Comparative Zoology. Cambridge, Mass. : The Museum
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Keywords: ., bookauthorha, bookcentury1800, bookdecade1860, booksubjectzoology
