On the Quartz Keratophyre and Associated Rocks of the North Range of the Baraboo Bluffs (Classic Reprint) - Softcover
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Excerpt from On the Quartz Keratophyre and Associated Rocks of the North Range of the Baraboo Bluffs
Irving in 1877 described the porphyry as occurring on the west side of the Baraboo River at the Lower Narrows. He considered the porphyry to be very distinctly bedded, with an east and west strike and a dip of 58° to 60° to the north. He also found that near the quartzite it changes to a distinct schist, which he thought to be allied to the greasy quartz schists at Devil's Lake. Farther west at the northern limit of the porphyry, he found the much fractured area. A schistose structure, which is apparent in places, was taken as bedding and as evidence of the clastic origin of the'rock. A specimen was analyzed and found to contain per cent. Of silica and a notably large quantity of soda as compared with potash.
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On the Quartz Keratophyre and Associated Rocks of the North Range of the
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Paperback. Condition: New. Print on Demand. This book presents the results of the geology of a specific volcanic eruption in a range of hills called the Baraboo Bluffs. The author examined the area and determined that there had been a Quartz Keratophyre eruption. This rock is an igneous rock found in volcanic areas. The author also details the composition and different forms of this volcanic rock and draws conclusions about the eruption. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item. Seller Inventory # 9781333359393_0
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On the Quartz Keratophyre and Associated Rocks of the North Range of the Baraboo Bluffs Classic Reprint
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PAP. Condition: New. New Book. Shipped from UK. Established seller since 2000. Seller Inventory # LW-9781333359393
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On the Quartz Keratophyre and Associated Rocks of the North Range of the Baraboo Bluffs Classic Reprint
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Weidman, S: On the Quartz Keratophyre and Associated Rocks o
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Condition: New. KlappentextrnrnExcerpt from On the Quartz Keratophyre and Associated Rocks of the North Range of the Baraboo BluffsIrving in 1877 described the porphyry as occurring on the west side of the Baraboo River at the Lower Narrows. He consider. Seller Inventory # 2148044184
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