Item type |
紀要論文(ELS) / Departmental Bulletin Paper(1) |
公開日 |
1990-09-01 |
タイトル |
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タイトル |
A STAUROLITE-BEARING CORUNDUM-GARNET GNEISS FROM THE EASTERN SØR RONDANE MOUNTAINS, ANTARCTICA |
言語 |
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言語 |
eng |
資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
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資源タイプ |
departmental bulletin paper |
ID登録 |
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ID登録 |
10.15094/00002618 |
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ID登録タイプ |
JaLC |
ページ属性 |
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内容記述タイプ |
Other |
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内容記述 |
P(論文) |
著者名(英) |
ASAMI, Masao
GREW, Edward S.
MAKIMOTO, Hiroshi
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著者所属(英) |
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en |
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Department of Geological Sciences, College of Liberal Arts, Okayama University |
著者所属(英) |
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en |
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Department of Geological Sciences, University of Maine |
著者所属(英) |
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en |
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Geological Survey of Japan |
抄録(英) |
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内容記述タイプ |
Other |
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内容記述 |
Staurolite is found as inclusions in garnet in a corundum-garnet gneiss from an outcrop of two-pyroxene gneiss in the eastern Sør Rondane Mountains. The staurolite is a zinc-poor variety of normal iron content (ZnO=0.10-0.32wt%; X_<Fe>=0.74-0.80), and occurs only in 'domains', consisting mainly of plagioclase, enclosed in the zoned garnet with magnesian cores (X_<Fe>=0.69-0.70). From textural and mineralogical observations, it is possible to distinguish (1) a staurolite-bearing mineral association in the domains and (2) a granulite-facies association of the garnet core with the matrix constituents plagioclase, biotite, sillimanite, corundum. spinel, magnetite and ilmenite. In addition, compositional relations between staurolite and the association garnet-corundum-spinel-sillimanite is consistent with the prograde reaction staurolite=garnet+corundum+spinel+sillimanite+H_2O. On the basis of textural features and paragenetic relations, staurolite in this gneiss is interpreted to be a relic that was isolated from the matrix by growing of garnet in a prograde metamorphic process attaining the granulite facies. A later, probably amphibolite-facies metamorphic episode is suggested by Fe-Mg redistribution between garnet and biotite in direct contact. |
雑誌書誌ID |
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収録物識別子タイプ |
NCID |
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収録物識別子 |
AA1072335X |
書誌情報 |
Proceedings of the NIPR Symposium on Antarctic Geosciences
巻 4,
p. 22-40,
発行日 1990-09
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出版者 |
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出版者 |
National Institute of Polar Research |