The magmatic oxygen fugacity of an ultrabasic dyke

✍ Scribed by F. G. F. Gibb; C. M. B. Henderson

• Book ID: 104745863
• Publisher: Springer
• Year: 1971
• Tongue: English
• Weight: 421 KB
• Volume: 30
• Category: Article
• ISSN: 0010-7999
• DOI: 10.1007/bf00372251

✦ Synopsis

The magmatic oxygen fugacity (/O2) of a thirty fool wide feldspathie peridotite dyke has been determined using the experimental method of Fudali (1965). Determinations were made on samples from both the marginal and central portions of the dyke and a difference of approximately one order of magnitude in/02 was observed. This difference is attributed to the increase in the H20 content of the liquid as crystallization proceeded and to diffusion of hydrogen out of the dyke. It is concluded that the dyke was emplaced with an/02 between 10 -s and 10 -9 atmospheres. Data on the absorbtion of ice by the silver/palladium sample containers during the experiments are given in an appendix.