JaLCDOI 10.18926/ESR/42457
Title Alternative 西南日本の熱変成超苦鉄質岩体中のかんらん石と輝石の組成変化に関する覚書
FullText URL esr_017_001_005.pdf
Author Nozaka, Toshio|
Abstract This short article presents some diagrams showing the compositional variations of primary and metamorphic olivine, orthopyroxene and clinopyroxene in peridotites and serpentinites from thermally metamorphosed ultramafic complexes in SW Japan. In contrast to olivine, which shows a gradual change of chemical composition corresponding with metamorphic grade, orthopyroxene and clinopyroxene show clear differences in composition between primary and metamorphic phases. Compared with primary pyroxenes, even though their compositions could be variable depending on original rock composition, metamorphic orthopyroxene and metamorphic clinopyroxene is clearly deficient in Cr(2)O(3) and CaO, and in Cr(2)O(3) and Al(2)O(3), respectively. These characteristics are useful for the discrimination between the pyroxenes of different origin.
Keywords chemical composition olivine orthopyroxene clinopyroxene metaperidotite
Publication Title Okayama University Earth Science Report
Published Date 2010-12-24
Volume volume17
Issue issue1
Start Page 1
End Page 5
ISSN 1340-7414
language 英語
Copyright Holders © 2010 by Okayama University Earth Science Reports Editorial Committee All Rights Reserved
File Version publisher
NAID 120002753315
Author Nozaka, Toshio| Shibata, Tsugio|
Published Date 1994-09-20
Publication Title Okayama University Earth Science Report
Volume volume1
Issue issue1
Content Type Departmental Bulletin Paper
Author Nozaka, Toshio| Shibata, Tsugio|
Published Date 1995-09-20
Publication Title Okayama University Earth Science Report
Volume volume2
Issue issue1
Content Type Departmental Bulletin Paper
Author Nozaka, Toshio|
Published Date 1997-09-20
Publication Title Okayama University Earth Science Report
Volume volume4
Issue issue1
Content Type Departmental Bulletin Paper