The SK110 and SK100 Tephra Beds in the Tsunan and Shitada areas, Niigata region and their grain-size characteristics as subaqueous gravity flow deposits

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概要

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• The SK110 and SK100 Tephras are one of the prominent widespread gravity flow deposits of early Pleistocene in central Japan respectively. Two localities of the SK110 and SK100 Tephra Beds, namely the Tsunan-Tazawagawa of southern Niigata Prefecture and Komagome in the Shitada Hill, east of the Niigata Plain, were described. The Tsunan area is about 100km and the Shitada area is 165km apart from the possible volcanic sources. Grain-size characteristics of the SK110 and SK100 Tephras in the two licalities were examined. Decrease of the grain-size downflow to the distance from the source is not performed in the lower parts of the SK110 and SK100 Tephras, which implies plug flow conditions to some extent. Comparison of wet and dry sieving methods in grain-size analyses was shown in the Appendix.

• 新潟大学の論文
• 2003-11-28

著者

• 黒川 勝己

  Department of Earth Science, Faculty of Education and Human Sciences, Niigata University

• Sakai Hajime

  Kawasaki Primary School

• Kurokawa K

  Department Of Earth Science Faculty Of Education And Human Sciences Niigata University

• Kurokawa Katsuki

  Department Of Earth Science Faculty Of Education And Human Sciences Niigata University

• TAN Makiko

  Department of Earth Science, Faculty of Education and Human Sciences, Niigata University

• YAHAGI Haruna

  Department of Earth Science, Faculty of Education and Human Sciences, Niigata University

• Tan Makiko

  Department Of Earth Science Faculty Of Education And Human Sciences Niigata University

• Yahagi Haruna

  Department Of Earth Science Faculty Of Education And Human Sciences Niigata University

• 丹 真紀子

  Department of Earth Science, Faculty of Education and Human Sciences, Niigata University

• 矢萩 春菜

  Department of Earth Science, Faculty of Education and Human Sciences, Niigata University

関連論文

• Correlation of the late Pliocene Mushono-Shiraiwa Tephra Beds in the Kobiwako and Kakegawa Groups to the Kyp-NAll-Jwg4 Tephra Beds in the Niigata region, central Japan
• Correlation of the early Pliocene Znp Tephra Bed to the Hjp Tephra Bed around Yoneyama in the Niigata region, central Japan
• Correlation of the late Pliocene Tzw-Smg-Tnkw-Jic Tephra Beds in the Niigata region, northeast Japan
• Calcic analog of clinojimthompsonite ftom the Oeyama Ophiolite,Southwest Japan
• The Znp-Ohta Ash; an early Pliocene widespread subaqueous tephra deposit in central Japan
• The UN-MD2 Ash : a late Pliocene widespread tephra deposit in central Japan
• The SK110 and SK100 Tephra Beds in the Tsunan and Shitada areas, Niigata region and their grain-size characteristics as subaqueous gravity flow deposits
• Tephra marker beds and their correlation in the Higashiyama Hills, east of Nagaoka City(Part2) : detection of the Znp and Ysc Tephra Beds in Pliocene series and their significance

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