The eclogites and garnet-chloritoid schists occur in the the Alag Khadny metamorphic complex, Chandman district, Lake Zone, SW Mongolia, which are located in the central parts of the Central Asian Orogenic Belt. The ophiolite belts and basement block (microcontinent) are geologically associated with the metamorphic complex. The eclogites and associated garnet-chloritoid schists occur as lenses and boudins in the matrix of marbles.

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Extreme thermal condition of metamorphism in continental deep crust is an enigmatic issue. Moreover, the post-peak thermal relaxation history of such orogenic deep crust is also not properly known. In view of this, we have chosen an aluminous granulite from Eastern Ghats, India to study their thermal history and to calculate cooling rate(s). Compositional profile across the interface between garnet-orthopyroxene reveals homogeneous garnet composition yielding near-peak temperature of 930^oC, while that across garnet-(Ti-F)biotite yields temperature of 800-875^oC with a zoning profile in garnet. Diffusion kinetics modeling of such zoning profile yields anomalously high cooling rate of ~12-25^oC/ky at 875^oC.

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結晶質石灰岩からなる平尾台（福岡県）は国の天然記念物に指定されているため，ハンマーを用いて露頭を損壊させることは固く禁じられている。
そこで露頭表面を撮影した画像から結晶粒径分布を計測した。
結果は，従前から言われていた，平尾花崗閃緑岩との接触境界に近づくにつれ粗粒化する傾向が見られることについて，定量的に確認することが出来た。 Covey-Crump&Rutter (1989)の結晶粒子サイズと温度の推定式から，接触部に近い地点の試料は低くとも640℃という結果を得た。

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