A “coarse-grained” metabasite body newly found in the Sambagawa metamorphic rocks in Kumakogen Town, Ehime Prefecture, SW Japan

DOI Web Site Web Site 1 Citations 9 References
  • Nakata Koki
    Department of Earth's Evolution and Environment, Graduate School of Science and Engineering, Ehime University Present address: Oyo Co
  • Kusuhashi Nao
    Department of Earth's Evolution and Environment, Graduate School of Science and Engineering, Ehime University
  • Saito Satoshi
    Department of Earth's Evolution and Environment, Graduate School of Science and Engineering, Ehime University
  • Ohfuji Hiroaki
    Geodynamics Research Center, Ehime University
  • Nara Masakazu
    Department of Biological Sciences, Faculty of Science and Technology, Kochi University

Bibliographic Information

Other Title
  • 愛媛県久万高原町の三波川変成岩類中に新たに見つかった“粗粒な”変塩基性岩体
  • エヒメケン クマコウゲンマチ ノ サンバガワ ヘンセイガンルイ チュウ ニ アラタ ニ ミツカッタ"ソリュウ ナ"ヘン エンキセイガンタイ

Search this article

Description

<p>A “coarse-grained” metabasite body has recently been discovered within the Sambagawa metamorphic rocks in Kumakogen Town, Ehime Prefecture, Southwest Japan. The metabasite is exposed at only a few outcrops, although gravel-sized clasts from the metabasite are also found in the overlying conglomerate beds of the Eocene Hiwadatoge Formation. The metabasite rocks generally have a weak foliation compared with the well-developed foliation in the surrounding Sambagawa crystalline schists. The metabasite includes white to gray “porphyroclasts” (composed mainly of albite and zoisite) within a greenish-brown matrix (including actinolite and chlorite). Rock textures and modal mineral compositions of the metabasite gravels in the Hiwadatoge Formation are more varied than those found in outcrops of the metabasite unit itself. Mineral assemblages found in the metabasite and the surrounding mafic schist show that both rock units were metamorphosed under conditions corresponding to greenschist facies.</p>

Journal

Citations (1)*help

See more

References(9)*help

See more

Related Projects

See more

Keywords

Details 詳細情報について

Report a problem

Back to top