. Annual report. 1st-12th, 1867-1878. Geology. 76 GEOLOGICAL SURVEY OF THE the sides of tbc lower hills and i)assing under the valley. Here and there a hi^li ridge is observed jutting- up against the base of the mount- ains, a remnant of the lake-deposit whieh has esea]K'd erosion. The central portiou of the range, iu which the different branches of the East Fig^ 23. Gallatin have their origin, is composed mainly of basalt, ba- saltic tufts, and brec- cia. Th ese h a ve been worn into the most fanciful architectural forms. Mr. Jackson, the photographer of the survey, pene- trated
. Annual report. 1st-12th, 1867-1878. Geology. 76 GEOLOGICAL SURVEY OF THE the sides of tbc lower hills and i)assing under the valley. Here and there a hi^li ridge is observed jutting- up against the base of the mount- ains, a remnant of the lake-deposit whieh has esea]K'd erosion. The central portiou of the range, iu which the different branches of the East Fig^ 23. Gallatin have their origin, is composed mainly of basalt, ba- saltic tufts, and brec- cia. Th ese h a ve been worn into the most fanciful architectural forms. Mr. Jackson, the photographer of the survey, pene- trated this region for the first time last summer, and ob- tained from it some most marvelously beautiful views of the scenery. I doubt whether there is a portion of the West DECEPTIVE WEATHERING, LIBERTY PEAK WherC ill the ClC- A, True dip Of beds. mcuts of laudscape beauty are more happily combined. Palace Canon and Palace Butte are formed of stratified tutts and breccia, and these palace-like foi'His are carved out of the solid beds by the slow process of erosion by water. In the canons, the limestone-strata frequently crop-outfrom beneath l,500"to 2,000 feet in thickness of this volcanic material. The reader is referred to the report of Dr. Peale for the details of the geology of this most interesting region. From the East Gallatin to the West Gallatin Caiion there are perhaps fifteen or twenty little branches, each of which rises near the crest of the range and carves out a gorge from five to fifteen miles iu length. Each of these canons would afiord a grand study for the geologist as well as the photographer. But we could examine only a few of them. From the entrance of West Gallatin Canon the view down the valley cannot be surpassed for beauty in this land of pictur- esque scenery. The gently-rolling, grass-covered hills; the little streams meandering through them, fringed ou either side with a thick growth of cottonwoods; the numerous farms, golden with their fields of w
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Keywords: ., bookcentury1800, bookdecade1860, bookpublishe, booksubjectgeology
