The Yosemite guide-book : a description of the Yosemite Valley and the adjacent region of the Sierra Nevada, and of the big trees of California . ^, is one of thoserounded masses of granite which are not uncommon in the Sierra dome-shaped masses are somew^hat characteristic of all granitic regions,but are nowhere developed on so giand a scale as in the Sierra. Anexamination of the figure wull show that the North Dome is made up ofhuge concentric plates of rock, overlapping each other, in such a way as toabsolutely prevent an ascent on the side presented to the Valley; to thenorth,
The Yosemite guide-book : a description of the Yosemite Valley and the adjacent region of the Sierra Nevada, and of the big trees of California . ^, is one of thoserounded masses of granite which are not uncommon in the Sierra dome-shaped masses are somew^hat characteristic of all granitic regions,but are nowhere developed on so giand a scale as in the Sierra. Anexamination of the figure wull show that the North Dome is made up ofhuge concentric plates of rock, overlapping each other, in such a way as toabsolutely prevent an ascent on the side presented to the Valley; to thenorth, however, the Dome runs out in a long ridge, as represented on *«^-l. THE YOSEMITE VALLEY. 67 the map, aud from that side there is not the shghtest difficulty in gettingto the smnmit. The concentric structure of the North Dome is well seen in the RoyalArches, which are, in fact, a sort of appendage to its base. This peculiarityof striicture pervades the whole mass of rock, and it is evident that thesearches have been formed by the slipping down of immense plates of granite,the size of the cavity thus left being enormous, but not easily arches and the column, at the angle of the main Valley and the TenayaCanon, seem as if intended to form a base of adequate magnitude andgrandeiu for the support of the Dome which rests upon them. The Half Dome, on the opposite side of the Tenaya Canon, is the loftiestand most imposing mass of those considered as part of the Yosemite. It isnot so high as Clouds Rest, but the latter seems rather to belong to theSierra than to the Yosemite. The Half Dome is in sight, in the distance,as we descend the Mariposa tr
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Keywords: ., bookcentury1800, bookdecade1870, bookidyosemiteguid, bookyear1870
