| 释义 |
pneumatolysis Petrol.|njuːməˈtɒlɪsɪs|
[ad. G. pneumatolyse (R. Bunsen 1851, as next, p. 264): see -lysis.]
The chemical alteration of rock and formation of minerals by the action of hot magmatic gases and vapours.
1896Phillips & Louis Treat. Ore Deposits (ed. 2) i. 129 He [sc. Vogt] uses the word pneumatolysis for this action. 1905Rep. Board of Regents Smithsonian Inst. 1904 335 The importance of pneumatolysis in forming ore deposits was emphasized by the discovery..of a number of economically important deposits. 1934,1962[see greisen]. 1966C. A. Lamey Metallic & Industrial Mineral Deposits iii. 43 Various descriptions of cassiterite deposits and wolframite deposits indicate that their formation..was caused by pneumatolysis. 1970R. J. Small Study of Landforms iv. 127 At many points the granite of the South-West Peninsula [of England] has been profoundly affected by the metamorphic process known as ‘pneumatolysis’. |