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Hutton and Hall on theory and experiments: the view after 2 centuries

Wyllie, Peter J. (1998) Hutton and Hall on theory and experiments: the view after 2 centuries. Episodes, 21 (1). pp. 3-10. ISSN 0705-3797.

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The interplay between observation, theory and experiment focused on the birth of geology as a science, during the period of the Scottish Enlightenment. The fires of Hutton’s (1726–1797) Plutonists could not be quenched by the oceans of Werner’s (1750–1817) Neptunists. Hall (1761–1832) was convinced that Hutton’s “Theory of the Earth” could be proved by experiments, but he deferred to the fears of his older colleague that failed experiments might discredit the Theory (which needed no further proof), and completed the experiments only after Hutton’s death. Hutton censured those who “judge of the great operations of the mineral kingdom, from having kindled a fire, and looked into the bottom of a little crucible.” Hall believed that “the imitation of the natural process is an object which may be pursued with rational expectation of success.” Following many discussions between Hutton and Hall, three topics were pursued in Hall’s experiments: 1790, the magmatic origin of granites, younger than schists; 1798, whinstones/ dolerites are as magmatic as known lavas; 1805, powdered calcite is transformed to marble and melted by the effects of compression (and water) in modifying the action of heat. The latter involved the first high-pressure, high-temperature apparatus and earned Hall the title “Father of Experimental Petrology”. Subsequent development of these three topics is outlined, with particular reference to Scottish contributions, and to debates about primary basalts, granitization, and carbonatites.

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Additional Information:© 1998 International Union of Geological Sciences. I thank Prof. Barry Dawson and the Conference Organizers for the invitation to lecture, and for permission to publish this modified version of the Proceedings paper; the Earth Sciences section of the US National Science Foundation for Grants EAR-9218806 and EAR-950577 which have supported my research through many years on granitic rocks, carbonatites, and kimberlites; and Prof. John Gittins for locating H. H. Read’s statement about “basic behinds”.
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ID Code:63559
Deposited By: Tony Diaz
Deposited On:12 Jan 2016 23:29
Last Modified:03 Oct 2019 09:29

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