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东南极拉斯曼丘陵出露的麻粒岩相泥质片麻岩和镁铁质麻粒岩经历了复杂的变形变质历史。代表前进的增厚事件的早期残留变质构造Ｄ１形成于１０００Ｍａ（Ｇｒｅｎｖｉｌｉａｎ）期间。对应于Ｄ１的变质峰期Ｍ１的变质组合以泥质片麻岩的石榴石和尖晶石变斑晶中的堇青石和夕线石包裹体以及镁铁质麻粒岩的石榴石变斑晶中的斜方辉石和斜长石包裹体为特征。在该区斯托尼斯半岛的紫苏黑云石英岩的粗粒紫苏辉石中发现了包裹的假蓝宝石＋磁铁矿和假蓝宝石＋尖晶石＋夕线石＋磁铁矿＋石英组合，这种假蓝宝石又包裹更细粒的尖晶石包裹体。石榴石－斜方辉石温度计及石榴石－斜方辉石－斜长石－石英压力计的计算表明Ｍ１变质作用最大的Ｐ－Ｔ条件为０．９５ＧＰａ和８７０℃。这些早期残留的矿物组合指示了其变质作用具有逆时针近等压冷却（ＩＢＣ）的Ｐ－Ｔ演化特征，反映了它们的形成是一个埋深期间前进加热的进变质作用过程。本文得出该区Ｍ１（１０００Ｍａ）变质作用的逆时针（ＩＢＣ）Ｐ－Ｔ轨迹可能与已存在的大陆壳下面的岩浆底侵作用及地壳内大量岩浆物质的侵入和结晶作用有关。此类型逆时针Ｐ－Ｔ轨迹不同于该区在晚期５００Ｍａ（Ｐａｎ－Ａｆｒｉｃａｎ）期间顺时针演化的Ｐ－Ｔ轨迹
The granulite facies gneiss and mafic granulite exposed in the Rastman hills of East Antarctica have undergone complicated deformation and metamorphism. The early remnant metamorphic tectonic D1, representing a progressive thickening event, was formed during 1000 Ma (Grenvilian). The metamorphic assemblage corresponding to the metamorphic peak M1 of D1 is characterized by the presence of cordierite and sillimanite inclusions in the garnet and spinel apatite of the argillaceous gneiss and the garnet speckle of the mafic granulite Of orthopyroxene and plagioclase inclusions. Coated sapphirite + magnetite and sapphirine + spinel + sillimanite + magnetite + quartz combinations were found in the coarse peri-pyroxene of basaltic peridotite in Permian Peninsula of the region This sapphire also encapsulates the finer spinel inclusions. Calculations of the garnet-orthopyroxene thermometer and garnet-orthopyroxene-plagioclase-quartz manometer show that the maximum P-T conditions for M1 metamorphism are 0.95 GPa and 870 ° C. These early remnant mineral assemblages indicate that the metamorphism has p-T evolutionary features counter-clockwise near isobaric cooling (IBC), reflecting their formation as a progressive metamorphism during progressive burial. It is concluded that the counter-clockwise (IBC) P-T trajectory of M1 (1000 Ma) metamorphism in this area may be related to the magmatic underplating beneath the existing continental crust and the intrusion and crystallization of a large amount of magmatic materials in the crust. This type of anticlockwise P-T trajectory differs from the P-T trajectory of this region which evolves clockwise during the late 500Ma (Pan-African)