堆積学研究
Online ISSN : 1882-9457
Print ISSN : 1342-310X
ISSN-L : 1342-310X
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砂礫質な陸棚堆積物に挟在するfluid mud堆積物の認定とその意義
西田 尚央島野 恭史小松 侑平伊藤 慎
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2011 年 70 巻 1 号 p. 37-42

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This study examined depositional processes of muddy deposits intercalated in coarse-grained sandridge deposits of the Middle Pleistocene Mandano and Ichijiku formations on the Boso Peninsula, central Japan. We identified these intercalated muddy deposits as fluid-mud deposits on the basis of the combination of lithofacies, geometry, bioturbation, and clay fabric. The fluid-mud deposits are interpreted to have formed in response to storm events. Thus, muddy intercalations, which may have formed as fluid-mud deposits, are interpreted to be more common than those having been identified in coastal and shallow-marine sandy successions.
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© 2011 日本堆積学会
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