大隅半島の神領10号墳石棺の岩石学的考察
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概要
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The No.10 Jinryo tumulus is located on the top of a hill near coast of Shibushi Bay, Osumi Peninsula. A form of a stone coffin of it is almost same as the type of stone coffin of tumulus in the area around Aso caldera, central Kyushu. But a lithofacies of stone coffin in the No.10 Jinryo tumulus is quite different from that of welded tuff of the Aso ４ pyroclastic flow. Therefore rock sample of the stone coffin were analyzed and mineral composition and refractive index of volcanic glass were obtained. The rock sample resulted in a welded tuff of the Ito pyroclastic flow. The stone of coffin in the No.10 Jinryo tumulus was probably quarried out from the outcrop of the Ito pyroclastic flow deposit along coastal area, Natsui, Shibushi City, Osumi Peninsula.
- 2011-12-30
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