The Geognosy of the Appalachians and the Origin of Crystalline Rocks: Address to the American Association for the Advancement of Science, on Retiring ... August 16, 1871 (Classic Reprint) - Softcover
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Excerpt from The Geognosy of the Appalachians and the Origin of Crystalline Rocks: Address to the American Association for the Advancement of Science, on Retiring From the Office of President of the Association, Indianapolis, August 16, 1871
Laurentian gneiss. The coarse-grained, porphyritic, reddish vari eties common to the latter are wanting in the Green Mountains, where the gneiss is generally of pale greenish and grayish hues. Massive stratified diorites, and epidotic and chloritic rocks, often more or less schistose, with steatite, dark colored serpentines and ferriferous dolomites and magnesites also characterize this gneissic series, and are intimately associated with beds of iron ore, generally a Slaty hematite, but occasionally magnetite. Chrome, titanium, nickel, copper, antimony and gold are frequently met with in this se ries. The gneisses often pass into schistose micaceous quartzites, and the argillites, which abound, frequently assume a soft, unctuous character, which has acquired for them the name of talcose or na creous slates, though analysis shows them not to be magnesian, but to consist essentially of a hydrous micaceous mineral. They are sometimes black and graphitic.
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The Geognosy of the Appalachians and the Origin of Crystalline Rocks
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Paperback. Zustand: New. Print on Demand. This book delves into the history of the Appalachian Mountains, their geological structure, and the mineralogy and paleontology that characterize them. The author traces the evolution of geological thought on the subject, showcasing discoveries and debates that have shaped our understanding of these ancient formations. The book highlights the significance of the Appalachian Mountains as a case study for exploring the larger themes of orographic geology, which investigates the laws governing mountain formation. The author draws on recent advances in the field, including the recognition of distinct crystalline rock series in the Appalachians and the role of physical, chemical, and biological processes in shaping these geological formations. Through this comprehensive study, the book offers new insights into the geological history and processes that have shaped one of the world's most iconic mountain ranges. 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. Bestandsnummer des Verkäufers 9781333585952_0
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The Geognosy of the Appalachians and the Origin of Crystalline Rocks Address to the American Association for the Advancement of Science, on Retiring August 16, 1871 Classic Reprint
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The Geognosy of the Appalachians and the Origin of Crystalline Rocks Address to the American Association for the Advancement of Science, on Retiring August 16, 1871 Classic Reprint
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PAP. Zustand: New. New Book. Shipped from UK. Established seller since 2000. Bestandsnummer des Verkäufers LW-9781333585952
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