Crystal size distribution of garnet in quartzo-feldspathic gneisses from the Lützow-Holm Complex at Skallen, East Antarctica

Saori Goto, Takeshi Ikeda

研究成果: Contribution to journalArticle査読

抄録

Crystal size distributions (CSDs) of garnet in quartzo-feldspathic gneisses from the Lützow-Holm Complex at Skallen, East Antarctica, indicate that significant annealing with Ostwald ripening did not take place even though the rocks underwent regional granulite-facies metamorphism with a peak phase of ultrahigh-temperature conditions. Absence of fluid as a result of the complete consumption of hydrous minerals during garnet-forming reactions could restrain intergranular diffusion and inhibit Ostwald ripening. Garnet-poor gneisses have experienced a single nucleation and growth event associated with a continuous garnet-forming reaction. In contrast, garnet-rich gneisses from the same outcrop have undergone additional garnet-forming reactions responsible for multiple stages of nucleation and growth.

本文言語英語
ページ(範囲)391-399
ページ数9
ジャーナルGeological Society Special Publication
308
DOI
出版ステータス出版済み - 12 1 2008

All Science Journal Classification (ASJC) codes

  • 水の科学と技術
  • 海洋工学
  • 地質学

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