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An Old Chapter of the Geological Record With a New Interpretation
An Old Chapter of the Geological Record With a New Interpretation Author:William King Subtitle: Or, Rock-Metamorphism ... and Its Resultant Imitations of Organisms, by W. King and T. H. Rowney General Books publication date: 2009 Original publication date: 1881 Notes: This is a black and white OCR reprint of the original. It has no illustrations and there may be typos or missing text. When you buy the General Books edition of... more » this book you get free trial access to Million-Books.com where you can select from more than a million books for free. Excerpt: CHAPTER XIV. SOME CRYSTALLINE LIMESTONES ARE SIMPLY MINERALIZED. It will be recollected that we have made an exception to certain crystallized calcareous rocks related to hemithrenes being of purely methylotic origin. It seems probable that this exception may apply to the marbles of Dalnein in Strathdon, Glen Elg, Glen Tilt, and the neighbouring localities : still we cannot altogether reject the idea that there are no methylosed examples amongst these marbles, even should they be of post-Archaean age, just as it may be doubted that all the Westchester crystalline limestones are simply mineralized products. The fact mentioned by Dana that " green hornblende in minute rounded crystals is occasionally found disseminated through the limestone of Westchester," and the similar well-known fact of the Scotch marbles being shotted with decreted crystalloids of augite« less