An algorithm for the computer arrangement of reactions about invariant points

✍ Scribed by Lawrence M. Barron; B. Jane Barron

• Book ID: 104745262
• Publisher: Springer
• Year: 1977
• Tongue: English
• Weight: 343 KB
• Volume: 62
• Category: Article
• ISSN: 0010-7999
• DOI: 10.1007/bf00371029

✦ Synopsis

A computerised algorithm is used to arrange fluid-absent reactions about invariant points in P-T space for an end-member model of blueschist facies metamorphism at Port Macquarie, N.S.W., consisting of the nine phases quartz, albite, jadeite, lawsonite, zoisite, paragonite, glaucophane, pyrope and chlorite. Inspection of the print-out (a table of reaction take-off angles for each invariant point) indicates that this multisystem consists of two mutually exclusive sets of invariant points; lawsonite-absent, paragoniteabsent and glaucophane-absent versus the other six. The algorithm is completely general for any two intensive variables and can treat solid solution minerals or degeneracy in reactions/invariant points.