A petrogenetic grid for the Fe-Mg silicates of pelitic schists
- Creators
- Albee, Arden L.
Abstract
The topology of the reaction surfaces for the phases-garnet, chloritoid, staurolite, kyanite, cordierite, chlorite, and biotite-is shown for two limiting sections of Pₛ, T, PH₂O space for the part of the system-SiO₂-Al₂O₃-FeO-MgO-K₂O-H₂O in which quartz and muscovite are stable. The basic assumption made is that the course of progressive metamorphism is primarily one of progressive dehydration with a progressive restriction of the fields of the most hydrous minerals, notably chlorite. The resulting petrogenetic grids for the surfaces Pₛ ≈ PH₂O and Ps ≈ ρs/ρH₂O are predominantly theoretical and should serve as a useful check in assigning natural metamorphic sequences to their relative pressure-temperature relationships.
Additional Information
I am indebted to Fred Barker and E-an Zen of the U. S. Geological Survey, W. G. Ernst of the University of California at Los Angeles, and L. S. Hollister, California Institute of Technology, for their critical comments on the manuscript. The work was supported by a grant from the National Science Foundation.Attached Files
Published - 512.full.pdf
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Additional details
- Eprint ID
- 116783
- Resolver ID
- CaltechAUTHORS:20220909-223202700
- NSF
- Created
-
2022-09-28Created from EPrint's datestamp field
- Updated
-
2022-09-28Created from EPrint's last_modified field
- Caltech groups
- Division of Geological and Planetary Sciences
- Other Numbering System Name
- Division of Geological and Planetary Sciences Contribution
- Other Numbering System Identifier
- 1277