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A Geochronological Study of the Crystalline Rocks of Charnwood Forest, England

  • M. Y. Meneisy (a1) and J. A. Miller (a1)
Abstract
Abstract

Potassium-argon age measurements made on samples of rock from Charnwood Forest and surrounding districts indicate that the porphyroids and syenites probably date from late pre-Cambrian times. The area was affected by both the Caledonian and Hercynianorogenies. A number of the intrusive rocks of the Forest have been shown to date from Caledonian times. A dolerite from the Leicestershire coalfield gave a Permian age.

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S. Allport , 1874. On the Microscopic Structure and Composition of British Carboniferous Dolerites. Quart. J. geol. Soc. Lond., 30, 550.

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C. Lapworth , 1898. A sketch of the geology of the Birmingham District. Proc. Geol. Ass. Lond., 15, 313428. Charnwood Forest, by W. W. Watts , 323–35, 417–18.

J. A. Miller , and J. D. Mudie , 1961. Potassium-Argon Age Determinations on Granite from the Island of Mahé in the Seychelles Archipelago. Nature, 192, 1174.

H. A. Shillibeer , and K. Watson , 1955'. Some potassium-argon ages for Ontario. Science, 121, 33.

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Geological Magazine
  • ISSN: 0016-7568
  • EISSN: 1469-5081
  • URL: /core/journals/geological-magazine
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