The Differentiation and Contact Metamorphism of the Snowbank Lake Syenite in the Vermilion Iron-Bearing Region of Minnesota (Classic Reprint) - Hardcover

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Excerpt from The Differentiation and Contact Metamorphism of the Snowbank Lake Syenite in the Vermilion Iron-Bearing Region of Minnesota<br/><br/>The syenite area in the immediate neighborhood of the lake is surrounded by an area of conglomerates, slates and greenstones. In this region the hills are bold, rounded knobs, but in the syenite area there is less relief and much of the country is occupied by lake and swamp. In the region of the Duluth gabbro, which lies just to the south of Snowbank and Round lakes, the land rises as a plateau of low relief about 200 feet above the surface of the lakes (see Plate vi. A Â B)

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