Geochemical features and origin of basalt within the Jurassic accretionary complex in the southwestern margin of the North Kitakami Belt, Northeast Japan

DOI Web Site Web Site 1 Citations 20 References Open Access
  • UCHINO Takayuki
    AIST, Geological Survey of Japan, Research Institute of Geology and Geoinformation

Bibliographic Information

Other Title
  • 北部北上帯南西縁部，ジュラ紀付加体中玄武岩の地球化学的特徴と起源
  • ホクブ キタカミタイ ミナミセイエンブ,ジュラキ フカタイ チュウ ゲンブガン ノ チキュウ カガクテキ トクチョウ ト キゲン

Search this article

Abstract

<p>Basalt within an accretionary complex is generally considered to be part of fragments scraped from a subducting oceanic plate. Regarding the basalt within the North Kitakami Belt in Northeast Japan, although it is also thought to be of oceanic islands, there have been few geochemical studies of the basalt.</p><p>In this report, whole-rock geochemical analyses were preliminarily conducted on six basalt samples from the Early–Middle Jurassic accretionary complexes in the southwestern margin of the North Kitakami Belt to determine their origins. As a result, four samples showed a geochemical signature consistent with MORB, whereas two samples were alkaline oceanic island basalt, according to geochemical discrimination diagrams and trace-element spider-diagrams. Notably, a certain amount of basalt indicating the MORB signature is recognized within the North Kitakami Belt.</p>

Journal

Citations (1)*help

See more

References(20)*help

See more

Related Projects

See more

Keywords

Details 詳細情報について

Report a problem

Back to top