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Metamorphic assemblages and the direction of flow metamorphic fluids in four instances of serpentinization

โœ Scribed by I. Barnes; John B. Rapp; James R. O'Neil; Richard A. Sheppard; Arthur J. Gude

Publisher
Springer
Year
1973
Tongue
English
Weight
18 KB
Volume
38
Category
Article
ISSN
0010-7999

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Metamorphic assemblages and the directio
Metamorphic assemblages and the direction of flow of metamorphic fluids in four instances of serpentinization
โœ Ivan Barnes; John B. Rapp; James R. O'Neil; Richard A. Sheppard; Arthur J. Gude ๐Ÿ“‚ Article ๐Ÿ“… 1972 ๐Ÿ› Springer ๐ŸŒ English โš– 929 KB

Fluids related to serpentinization are of at least three types. The first reported (Barnes and O'Neil, 1969) is a fluid of local meteoric origin, the chemical and thermodynamic properties of which are entirely controlled by olivine, orthopyroxene, brueite, and serpentine reactions. It is a Ca+2--Ott

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The Fuscaldo assemblages show that in metabasites suitable for the production of glaucophane at higher pressures, amphibole poor(er) in Gl-molecule + albite +Al-rich chlorite is formed at lower pressure. Blue amphibole formed together with albite, chlorite and a Ca-silicate appears to have a fixed c