Oxidation in high temperature petrogenesis

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ID: 301191
1961
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Abstract
A study has been made of a variety of metamorphic and magmatic rocks to determine how oxidative processes are reflected in their mineral assemblages. In this study particular attention is paid to solid solutions. Field and experimental evidence agree with theory as to the responses of ferromagnesian solid solution to compositional changes of the coupled gas phase. Typical of these responses are the increases shown by the ratios Fe ~2~ O ~3~ /FeO and MgO/(MgO + FeO) with increasing P ~O2~ . Attention is also directed to the consequences of the normally low values of P ~O2~ /P ~H2O~ to gaseous transport by bodily flow and diffusion in regional metamorphism. Examples of oxidative and related processes are drawn from regionally metamorphosed Fe formation of Quebec and the Lake Superior region, from numerous contact metamorphic deposits, from the extrusives of the San Juan region of Colorado, and from other magmatic provinces. A thermodynamic unity of response to oxidative processes is shown by these different rock types.
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openalex_W2322525661 Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Robert F. Mueller
Journal american journal of science
Year 1961
DOI
10.2475/ajs.259.6.460
URL
https://ajs.scholasticahq.com/article/58885.pdf
Keywords Keywords not found

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