北海道知床半島のオシンコシン貫入岩体は，長さ1,000 m，幅400 mのマッシュルーム形の玄武岩質安山岩貫入岩体である。この岩体は，同心円状の累帯構造をなし，内側から，塊状帯，亀甲状節理帯，および縞状構造帯からなる。塊状帯は貫入岩体中心部の大部分を占め，径100-250 cmの柱状節理で特徴づけられる。亀甲状節理帯は塊状帯を取り巻き，径70-150 cmの柱状節理とその表面に発達する径10-25 cmの亀甲状節理で特徴づけられる。縞状構造帯は亀甲状節理帯を取り巻き，径50-80 cmの柱状節理と，貫入岩体の外周に平行な縞状構造で特徴づけられる。縞状構造は風化侵食に強い凸部と弱い凹部（共に幅数cm）からなり，凸部の中軸には脈がみられる。この縞状構造は，マグマの貫入後，岩体の外周に平行な多数の冷却割れ目に結晶作用の残液が濃集して形成されたと考えられる。

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A suite of granulates including metasedimentary rocks (khondalite, quartzite and calc-silicate granulite), mafic granulite, orthopyroxene granulite, and garnetiferous granite gneisses (leptynite, sillimanite granite and porphyritic granite) exposes in the Rayagada area, north-central part of Eastern Ghats Granulite Belt of Peninsular India. Among these, important marker horizons like calc-silicate granulate and quartzite have been used to establish the sequence and geometry of folds on a regional scale. Signatures of three phases of deformations (D₁, D₂, D₃ from the earliest to the latest) are present in metasedimentary rocks and mafic granulite, whereas most of the massive orthopyroxene granulite, leptynite and sillimanite granite exhibit foliation corresponding to the second deformation event. These three deformations correspond to three folding episodes: F₁ (intrafolial fold), F₂ (tight to isoclinal fold) and F₃ (open fold) respectively. Axial surfaces of F₁ and F₂ are mostly parallel, trending NNE-SSW and F₃ axial plane is at right angle to that of F₁ and F₂ folds. Corresponding axial plane foliations are gneissic banding in khondalite and mafic granulate (S₁), a pervasive foliation in granite gneiss (S₂) and a sporadic fracture cleavage in all the rock-types (S₃). In most cases, structures of first deformation (D₁) were superimposed by the second one (D₂), resulting D₂ structures (both folding and foliation) as the dominantly preserved deformation structure. D₁ deformation and D₂ deformation have been inferred to be related to the E-W or ESE-WNW directed compression and progressive simple shear and D₃ deformation might be related to the strike-slip displacement and NNE-SSW transtension.

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CaMgSi₂O₆-CaTiAl₂O₆系中の組成[CaMgSi₂O₆成分（80 wt%）・CaTiAl₂O₆成分（20 wt%）]の10GPa，1500°Cにおける相平衡関係を実験的に決定した。その結果，輝石，ペロブスカイトと多量のTiO₂を含むざくろ石が認められた。このざくろ石の存在の確証とセルパラメーターの決定のため，改めてこのざくろ石の組成のガラスから10 GPa，1500°Cにおいてざくろ石の合成を試みた。その結果，6.3 wt%のTiO₂を含むざくろ石が合成され，セルパラメーターは11.812Åであった。

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