Metastable paragenetic sequence of andalusite, kyanite, and sillimanite, Kwoiek area, British Columbia

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ID: 295949
1969
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Abstract
A model involving initial metastable crystallization of andalusite in a contact metamorphic terrane near the Coast Range batholith is proposed to explain a constant lithostatic pressure, increasing temperature observed sequence. Texturally, fibrolite occurs as a phase distinct from sillimanite and at a lower temperature than the first appearance of sillimanite. Evidence for the metastable origin of the andalusite comes from: polymorphs distribution, textural relations in coexisting polymorphs, and a comparison of the transition sequence andalusite to kyanite to sillimanite with a second one, presumed to be contemporaneous, involving only andalusite and fibrolite. Comparison of the observed field data with experimentally determined stability fields of staurolite and aluminum silicates suggest that the prevailing pressures of the Coast Range batholith were between 5.5 and 7.1 kb.
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openalex_W1996578169 Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors L. S. Hollister
Journal american journal of science
Year 1969
DOI
10.2475/ajs.267.3.352
URL
https://ajs.scholasticahq.com/article/59313.pdf
Keywords Keywords not found

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