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Basaltic volcanic ash layers found on the Arasaki Coast, Miura Peninsula, Kanagawa, 2021 by Katsuaki Watanabe
三浦半島荒崎海岸に見られる玄武岩質の火山灰層（神奈川県横須賀市）
Basaltic volcanic ash layers found on the Arasaki Coast, Miura Peninsula, Kanagawa, 2021