Faculty Profiles - NAKAMURA Daisuke

Papers - NAKAMURA Daisuke

Division display 21 - 24 of about 24 ／ All the affair displays >>

Winchite from Mt. Hiei contact aureole, Kyoto, Japan Reviewed International journal

T. Hirajima, D. Nakamura, K. Shirahata

Journal of Mineralogical and Petrological Sciences 95 ( 6 ) 107 - 11 2000

Language：English Publishing type：Research paper (scientific journal) Publisher：Japan Association of Mineralogical Sciences

Sodic-calcic amphibole closely associated with aegirine-augite was newly found from a sandy hornfels at Mt. Hiei contact aureole, Kyoto, Japan. The amphibole shows a pleochroism of X=colorless, Y=blue and Z=light blue and is winchite with significant amounts of TiO₂ (1.5-2.5 wt.%) and of Mg-Fe-Mn-Li amphibole component at B site (ca. 0.1-0.4 cations for O=23 basis). The chemical composition and the coexisting phases of the winchite in this study are similar to those in the alkaline igneous complex.

DOI： 10.2465/jmps.95.107

CiNii Article

CiNii Books

researchmap

Thermodynamic modelling of sodic pyroxene solid-solution and its application in a garnet-omphacite-kyanite-coesite geothermobarometer for UHP metamorphic rocks Reviewed

D Nakamura, S Banno

CONTRIBUTIONS TO MINERALOGY AND PETROLOGY 130 ( 1 ) 93 - 102 1997.12

Language：English Publishing type：Research paper (scientific journal) Publisher：SPRINGER VERLAG

A garnet-omphacite-kyanite-coesite geothermobarometer is constructed to estimate the peak metamorphic pressure of ultrahigh-pressure (UHP) eclogites. For this we use a quaternary regular solution model for garnet, and propose a new model for sodic pyroxene that assumes double site solid-solution (Na,Ca)(M2)(Al,Fe3+,Fe2+,Mg)(Si2O6)-Si-M1, where cations in the M2- and the M1-sites mix randomly but with intersite interactions, not only between nearest neighboring cations but also between next nearest neighboring cations. In the new model, overall excess interaction parameters are quantitatively deduced from the previous experimental data and critical temperature, and the activity of the jadeite component agrees reasonably with that based on the Landau theory. Furthermore, the relations of the calculated order parameter to temperature and composition are consistent with other experimental works. These facts support the usefulness of the new model. Application of our geothermobarometer to kyanite eclogite gave metamorphic conditions around 3.4 GPa and 800 degrees C for both samples from the ora Maira Massif, Western Alps, and from Rongcheng County, in the Su-Lu region of eastern China.

DOI： 10.1007/s004100050352

Web of Science

researchmap

Occurrence and field relationships of ultrahigh-pressure metagranitoid and coesite eclogite in the Su-Lu terrane, eastern China Reviewed

S.R. Wallis, A. Ishiwatari, T. Hirajima, K. Ye, J. Guo, D. Nakamura, T. Kato, M. Zhai, M. Enami, B. Cong, S. Banno

Journal of Geological Society, London 154 45 - 54 1997

Comparison and interpretation of graphitization in contact and regional metamorphic rocks Reviewed

D. Nakamura

Island Arc 4 112 - 127 1995

　 PREV - NEXT 　

< NAKAMURA Daisuke >

Papers - NAKAMURA Daisuke