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Beiträge zur Mineralogie von Japan

Nature volume 143, page 582 (08 April 1939) | Download Citation



PROF. T. ITO, of the Mineralogical Institute of Tokyo, is continuing the excellent work begun by the late Prof. T. Wada by publishing the results of the investigation of the minerals and rocks of Japan and its dependencies. The present part is devoted to the composite sill which intrudes into the Tertiary formations near Kergan in north-eastern Korea. It is styled a sill, although the shape owing to the effect of the interposing rocks is more varied than is ordinarily understood by the term. The core consists of a syenitic rook, above and below which is a compact syenite-dolerite.

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