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Comment on Blundy and Holland's (1990) “Calcic amphibole equilibria and a new amphibole-plagioclase geothermometer”

✍ Scribed by Malcolm J. Rutherford; Marie C. Johnson

Publisher
Springer
Year
1992
Tongue
English
Weight
312 KB
Volume
111
Category
Article
ISSN
0010-7999

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✦ Synopsis

Confirmation of the empirical correlation of AI in hornblende with pressure of solidification of calc-alkaline plutons. Am Mineral 72 : 231-239 Johnson MC, Rutherford MJ (1988) Experimental calibration of an aluminum-in-hornblende geobarometer applicable to calcalkaline rocks. EOS 69:1511 Johnson MC, Rutherford MJ (1989) Experimentally determined conditions in the Fish Canyon Tuff, Colorado, magma chamber.

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Discussion of Blundy and Holland's (1990
Discussion of Blundy and Holland's (1990) “Calcic amphibole equilibria and a new amphibole-plagioclase geothermometer”
✍ Jane M. Hammarstrom; E-an Zen 📂 Article 📅 1992 🏛 Springer 🌐 English ⚖ 360 KB

Blundy and Holland (1990) recently proposed a pressuredependent geothermometer based on the tetrahedral aluminum content of calcic amphibole and the albite content of coexisting plagioclase. Their formulation of these equilibria as barometers, when set at a fixed temperature of 700~ gave an equat