Report on the Tertiary Lignite Formation, in the Vicinity of the Forty-Ninth Parallel (Classic Reprint) - Softcover

Inhaltsangabe

Excerpt from Report on the Tertiary Lignite Formation, in the Vicinity of the Forty-Ninth Parallel

Ten miles west of Pyramid Valley, in the upper part of the valley of another stream, yellowish and grey stratified sandy clays are again seen, but are not perfectly exposed. At one place a layer of hard ripple-marked sandstone is exposed, the ripple-marks being about an inch and a half wide and very perfect, and indicating a current N orth-west Magnetic.

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