Abstract
AN account of “Some Lava Flows of the Western Slope of the Sierra Nevada, California,” is given by Mr. F. Leslie Ransome, in Bulletin No. 89 of the United States Geological Survey, 1898. The area is described as having been worn down to a rough peneplain during the interval between the close of the Jura-trias and the beginning of the Miocene period. The rocks upon which this somewhat uneven peneplain has been carved are those of the so-called “Bed-rock series” of the Gold Belt, and are of Jura-trias and earlier age. They consist on the lower slopes (or foothill region) of clay- slates, schists, limestones, quartzites and various igneous rocks; and on the higher slopes mainly of gneissic and granitic rocks.
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Massive Lava Flows on the Sierra Nevada. Nature 59, 355 (1899). https://doi.org/10.1038/059355a0
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DOI: https://doi.org/10.1038/059355a0