The Experts below are selected from a list of 216 Experts worldwide ranked by ideXlab platform

Peter Vandenabeele - One of the best experts on this subject based on the ideXlab platform.

  • Raman-based geobarometry of ultrahigh-pressure Metamorphic Rocks: applications, problems, and perspectives
    Analytical and Bioanalytical Chemistry, 2010
    Co-Authors: Andrey V. Korsakov, Vladimir P. Zhukov, Peter Vandenabeele
    Abstract:

    Raman-based geobarometry has recently become increasingly popular because it is an elegant way to obtain information on peak Metamorphic conditions or the entire pressure-temperature-time (P-T-t) path of Metamorphic Rocks, especially those formed under ultrahigh-pressure (UHP) conditions. However, several problems need to be solved to get reliable estimates of Metamorphic conditions. In this paper we present some examples of difficulties which can arise during the Raman spectroscopy study of solid inclusions from ultrahigh-pressure Metamorphic Rocks.

Andrey V. Korsakov - One of the best experts on this subject based on the ideXlab platform.

  • Raman-based geobarometry of ultrahigh-pressure Metamorphic Rocks: applications, problems, and perspectives
    Analytical and Bioanalytical Chemistry, 2010
    Co-Authors: Andrey V. Korsakov, Vladimir P. Zhukov, Peter Vandenabeele
    Abstract:

    Raman-based geobarometry has recently become increasingly popular because it is an elegant way to obtain information on peak Metamorphic conditions or the entire pressure-temperature-time (P-T-t) path of Metamorphic Rocks, especially those formed under ultrahigh-pressure (UHP) conditions. However, several problems need to be solved to get reliable estimates of Metamorphic conditions. In this paper we present some examples of difficulties which can arise during the Raman spectroscopy study of solid inclusions from ultrahigh-pressure Metamorphic Rocks.

Simon Wallis - One of the best experts on this subject based on the ideXlab platform.

  • extending the applicability of the raman carbonaceous material geothermometer using data from contact Metamorphic Rocks
    Journal of Metamorphic Geology, 2010
    Co-Authors: Mutsuki Aoya, Yui Kouketsu, Tomoyuki Mizukami, Shunsuke Endo, Daisuke Nakamura, H Shimizu, Simon Wallis
    Abstract:

    The degree of graphitization of carbonaceous material (CM) has been widely used as an indicator of Metamorphic grade. Previous work has demonstrated that peak Metamorphic temperature (T )o f regional Metamorphic Rocks can be estimated by an area ratio (R2) of peaks recognized in Raman spectra of CM. The applicability of this method to low-pressure ( 50) that adequately reflects the range of sample heterogeneity. Using this procedure (with 532-nm laser) and adapting our new calibration, the errors of the Raman CM geothermometer for contact Metamorphic Rocks decrease to � ±30 � C.

H Shimizu - One of the best experts on this subject based on the ideXlab platform.

  • extending the applicability of the raman carbonaceous material geothermometer using data from contact Metamorphic Rocks
    Journal of Metamorphic Geology, 2010
    Co-Authors: Mutsuki Aoya, Yui Kouketsu, Tomoyuki Mizukami, Shunsuke Endo, Daisuke Nakamura, H Shimizu, Simon Wallis
    Abstract:

    The degree of graphitization of carbonaceous material (CM) has been widely used as an indicator of Metamorphic grade. Previous work has demonstrated that peak Metamorphic temperature (T )o f regional Metamorphic Rocks can be estimated by an area ratio (R2) of peaks recognized in Raman spectra of CM. The applicability of this method to low-pressure ( 50) that adequately reflects the range of sample heterogeneity. Using this procedure (with 532-nm laser) and adapting our new calibration, the errors of the Raman CM geothermometer for contact Metamorphic Rocks decrease to � ±30 � C.

Alan Matthews - One of the best experts on this subject based on the ideXlab platform.

  • Oxygen isotope geothermometers for Metamorphic Rocks
    Journal of Metamorphic Geology, 1994
    Co-Authors: Alan Matthews
    Abstract:

    The Chicago mineral-carbonate oxygen isotope fractionation curves have been combined with mineral-water fractionation data for jadeite, zoisite and rutile and new data for grossular-water to provide a set of self-consistent mineral-pair calibrations. The A coefficients in the equation 1000 In α=A× 106T-2 of the new mineral-pair fractionations are Jadeite Zoisite Grossular Rutile Quartz 1.69 2.00 3.03 5.02 Jadeite 0.31 1.34 3.33 Zoisite 1.03 3.02 Grossular 1.99 The isotopic fractionation properties of natural pyralspite garnet [(Ca, Fe, Mg, Mn)3Al2Si3O12] can be approximated by those of the grossular end-member. Appropriate substitutions also yield coefficients for the solid-solution minerals: sodic pyroxene and epidote, e.g. Aquartz-sodic pyroxene= 2.75 - 1.06Xjd, Aquartz-epidote= 2.00 + 0.75Xps where XJd and XPs are the mole fractions of the jadeite and pistacite components, respectively. The new data set is particularly suitable for the geothermometry of Metamorphic Rocks. δ18O data from minerals of the high-pressure Metamorphic Rocks of the Sesia Zone of Italy and Cyclades Complex of Greece yield well-constrained mean temperatures of 572 and 478d C, respectively. Type III blueschist metabasalts of the Franciscan Formation of California give mean quartz-garnet temperatures of 354d C.