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Ages retrieved from accessory minerals in high-grade metamorphic rocks place important constraints on the timing of events and… Expand Diamonds and other ultrahigh pressure (UHP) minerals have been reported previously from the Luobusa ophiolite of Tibet, but these… Expand We use petrographic and mineralogical data on modern sediments to investigate erosion patterns in the Marsyandi basin of the… Expand (� 910 Ma). The NBMB marks the Mesoproterozoic limit of the SW Amazon craton. The discordance of the NBMB to the NNW structural… Expand The conditions at which monazite and allanite were produced and destroyed during prograde metamorphism of pelitic rocks were… Expand The Mayuan assemblage in the Cathaysia Block, Southeast China, consists of felsic paragneiss, pelitic schist, greenschist… Expand High-P rocks of the Pam Peninsula, NE New Caledonia, are divided into three zones: (1) an uppermost ferroglaucophane-lawsonite… Expand 2154·7-1·4 Ma, whereas 19 analyses of grain fractions and single grains of multi-faceted zircons interpreted, from their char… Expand DIAMONDS commonly occur in kimberlites, lamproites and alluvial sediments derived from these rocks. More recently, diamonds (or… Expand A B S T R A C T. Textural and chemical data are reviewed for amphiboles occurring in Cr-diopside series and Al-augite series… Expand