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  1. No Access

    Article

    Oxygen isotope variations of garnets and clinopyroxenes in a layered diamondiferous calcsilicate rock from Kokchetav Massif, Kazakhstan: a window into the geochemical nature of deeply subducted UHPM rocks

    Calcsilicate and garnet-pyroxene rocks with dolomite and Mg-calcite matrices occur with UHPM diamondiferous biotite gneisses and schists of the Kokchetav Massif. The calcsilicates are characterized by high dia...

    N. V. Sobolev, H.-P. Schertl, J. W. Valley… in Contributions to Mineralogy and Petrology (2011)

  2. No Access

    Article

    Diffusion of divalent cations in garnet: multi-couple experiments

    We demonstrate the possibility of studying several diffusion couples in a single run, i.e. under almost similar P–T–t– $$ f_{{{\text{O}}_{ 2} }...

    A. L. Perchuk, M. Burchard, H.-P. Schertl… in Contributions to Mineralogy and Petrology (2009)

  3. No Access

    Chapter and Conference Paper

    Characterization of a (021) twin in coesite using LACBED and precession electron diffraction

    Coesite is a high-pressure polymorph of silica stable in the pressure range 2.5–9 GPa, which corresponds to a minimum depth in Earth of ca. 90 km. Given the ubiquity of silica at the surface of the Earth, coes...

    P. Cordier, D. Jacob, H. -P. Schertl in EMC 2008 14th European Microscopy Congress… (2008)

  4. No Access

    Chapter and Conference Paper

    Precession Electron Diffraction for the characterization of twinning in pseudo-symmetrical crystals: case of coesite

    Recent developments in electron diffraction call for a reappraisal of the possibilities offered by spot patterns. Among them is the Vincent-Midgley Precession Electron Diffraction (PED) technique [1], which re...

    D. Jacob, P. Cordier, J. P. Morniroli… in EMC 2008 14th European Microscopy Congress… (2008)

  5. No Access

    Article

    Pb−Sr−Nd isotopic behavior of deeply subducted crustal rocks from the Dora Maira Massif, Western Alps, Italy-II: what is the age of the ultrahigh-pressure metamorphism?

    Pb, Nd and Sr isotope data are reported from two localities on mineral separates from Mg-rich metapelites and associated rocks that have been subducted to depths of at least 100 km, for which metamorphic condi...

    G. R. Tilton, W. Schreyer, H. -P. Schertl in Contributions to Mineralogy and Petrology (1991)

  6. No Access

    Article

    The pyrope-coesite rocks and their country rocks at Parigi, Dora Maira Massif, Western Alps: detailed petrography, mineral chemistry and PT-path

    Both the coarse- and fine-grained varieties of the partly coesite-bearing pyrope-quartzites, their interlayered jadeite-kyanite rocks, and the biotite-phengite gneiss country rock common to all of them were su...

    H. -P. Schertl, W. Schreyer, C. Chopin in Contributions to Mineralogy and Petrology (1991)