Institute of Geology and Mineralogy, Faculty of Science, HiroshimaUniversity
抄録(英)
Metabasites in the Cape Omega area, the westernmost part of the Prince Olav Coast, are classified into two types, I and II. Type I contains clinopyroxene and Type II does not. Bulk chemical compositions of both types are characterized by the abundance in alkalies, especially (Na)_2O. The presence or absence of clinopyroxene is controlled by the bulk chemical composition, especially by the mole ratio of CaO/(FeO^*+MgO+MnO). Hornblende in Type I is characterized by the abundance of Si and (Al)^<VI> and poverty of Ti and K compared with that in Type II. The petrological and mineralogical characteristics of metabasites of the region from the Prince Olav Coast to Lutzow-Holm Bay show a systematic change, suggesting that the region has undergone westward progressive metamorphism.
雑誌書誌ID
AA00733561
雑誌名
Memoirs of National Institute of Polar Research. Special issue
Metabasites of the Cape Omega area, East Antarctica
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KJ00000012420.pdf
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概要
