Abstract
THE development of theories of ore genesis since their discussion at the British Association meeting in 1833 was briefly referred to in his presidential address to Section C (Geology) by Prof. J. W. Gregory. He remarked that the belief in the deep-seated origin of ores had been at one time superseded by their assignment to lateral secretion and later to the igneous rocks. He assigned the source of the lode metals to a deep-seated zone below the level of the ordinary igneous rocks, and regarded the occasional occurrences of lode metals in them as secondary. The trend of the discussion in the Geological Section on Sept. 29 supported these views.
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Genesis of Ores in Relation to Petrographic Processes. Nature 129, 120–122 (1932). https://doi.org/10.1038/129120a0
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DOI: https://doi.org/10.1038/129120a0