Garnet-bearing Tephra Layer Mk19 in the Upper Pliocene Nakatsu Group, Kanagawa Prefecture, Central Japan.

• Noda Keiji

  Ohya Junior High School

• Ozawa Hiroaki

  Naruto Univrtsity of Education

• Okumura Kiyoshi

  Naruto Univrtsity of Education

Bibliographic Information

Other Title

• 神奈川県の上部鮮新統中津層群からの含ザクロ石テフラ層Ｍｋ１９の発見とその意義
• カナガワケン ノ ジョウブ センシントウ ナカツソウグン カラ ノ ガン ザクロイシ テフラソウ Mk19 ノ ハッケン ト ソノ イギ

Abstract

The Upper Pliocene Nakatsu Group along the Sagami River, in Sagamihara and Atsugi Cities and Aikawa Town in Kanagawa Prefecture, has been mainly studied by some palaeontologists as part of their research on molluscan fossils. The Nakatsu Group has been lithologically divided into the Kosawa, Kanzawa, Shimizu, Otsuka, and Shiota Formations in ascending order. The Otsuka and Shiota Formations intercalate many tephra layers; however, detailed stratigraphic study using these tephra layers has never been done. The Mk 19 tephra layer, interbedded in the Otsuka Formation, is composed of Ta, Tb type glass shards, plagioclase, quartz, garnet, amphibole, biotite, and opaque minerals. The garnet is an almandine-spessartine solid solution. The combination of Mk 19 and the Mk 20, abundant in quartz, is useful for correlation in this region.

Journal

• The Quaternary Research (Daiyonki-Kenkyu)

  The Quaternary Research (Daiyonki-Kenkyu) 38 (1), 65-73, 1999

  Japan Association for Quaternary Research

Keywords

• 中津層群
• 大塚層
• テフラ層
• ザクロ石
• 上部鮮新統

Details

• CRID: 1390282681473421440
• NII Article ID: 10002511041
• NII Book ID: AN0034136X
• DOI: 10.4116/jaqua.38.65
• ISSN: 18818129
• ISSN: 04182642
• NDL BIB ID: 4644716
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4644716
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed