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 . RIM OF THE KETTLE. This rim of the Kettle is a beautiful illustration of the concentric or dome-structure of the granite of this region. The dotted lines in show the bedding or lamination of the rock, in the cross-section of thewhole, and Fig. 17 explains how the parapet has been formed by the wear-ing away of a part of the concentrically-laminated granite near the peculiar crater-like cavity .in the granite is typical of many othe
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 . RIM OF THE KETTLE. This rim of the Kettle is a beautiful illustration of the concentric or dome-structure of the granite of this region. The dotted lines in show the bedding or lamination of the rock, in the cross-section of thewhole, and Fig. 17 explains how the parapet has been formed by the wear-ing away of a part of the concentrically-laminated granite near the peculiar crater-like cavity .in the granite is typical of many others seenafterwards in this region, the origin of which it seems impossible to refer toany ordinary denudation, or to the action of glaciers. These cavities were THE HIGH SIERRA. 119. all occupied by masses of ice, as is evi- Fig. 17. dent from the polish of the interior walls and bottom of each of them ; but it hardly needs to be added that no glacial action could have originally formed one of these kettles ; the most that it could do would be to scour out and polish up the interior. This subject will be discussed in the second volume of the Geology of California. Beyond the Kettle the divide becomes quite impassable for animals, andnearly so for men. Seve^al unsuccessful trials were made to pass the barrierof nearly perpendicular rocks; but, at last, a chink in the granite was found,through which the party crawled, and proceeded to ascend the next highpeak on the divide, which is about six miles southeast of Camp 169, theelevation of which was found to be 11, feet above the sea. From itssummit a magnificent view was obtained of the crest of the Sierra, as wellas of the divide which had V)een traversed by the party. The region to theeast presented a complicate
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