Occurrence of Felsic Rocks in Oceanic Gabbros from IODP Hole U1473A: Implications for Evolved Melt Migration in the Lower Oceanic Crust

DOI HANDLE HANDLE Web Site 被引用文献7件 参考文献46件 オープンアクセス
  • Du Khac Nguyen
    Graduate School of Natural Science and Technology, Kanazawa University, Kakuma-machi, Kanazawa Ishikawa 920-1192, Japan
  • Tomoaki Morishita
    College of Science and Engineering, Kanazawa University, Kakuma-machi, Kanazawa Ishikawa 920-1192, Japan
  • Yusuke Soda
    College of Science and Engineering, Kanazawa University, Kakuma-machi, Kanazawa Ishikawa 920-1192, Japan
  • Akihiro Tamura
    College of Science and Engineering, Kanazawa University, Kakuma-machi, Kanazawa Ishikawa 920-1192, Japan
  • Biswajit Ghosh
    Department of Geology, University of Calcutta, 35 Ballygunge Circular Road Kolkata, West Bengal 700019, India
  • Yumiko Harigane
    Institute of Geology and Geoinformation, Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology, AIST Tsukuba Central 7, 1-1-1 Higashi, Tsukuba Ibaraki 305-8567, Japan
  • Lydéric France
    Centre de Recherches Pétrographiques et Géochimiques (UMR 7358), CNRS, Université de Lorraine, 54501 Vandœuvre les Nancy, France
  • Chuanzhou Liu
    State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, P.O. Box 9825, Beijing 100029, China
  • James H. Natland
    Rosenstiel School of Marine and Atmospheric Science, University of Miami, Miami, FL 33156, USA
  • Alessio Sanfilippo
    Department of Earth Science and Environment, University of Pavia, 27100 Pavia, Italy
  • Christopher J. MacLeod
    School of Earth and Ocean Sciences, Cardiff University, Main Building, Park Place Cardiff, Wales CF10 3AT, UK
  • Peter Blum
    International Ocean Discovery Program, Texas A&M University, 1000 Discovery Drive, College Station, TX 77845-9547, USA
  • Henry J. B. Dick
    Department of Geology and Geophysics, Woods Hole Oceanographic Institution, MS #8, McLean Laboratory, Woods Hole, MA 02543-1539, USA

書誌事項

公開日
2018-12-10
資源種別
journal article
権利情報
  • https://creativecommons.org/licenses/by/4.0/
DOI
  • 10.3390/min8120583
公開者
MDPI AG

説明

<jats:p>Felsic rocks are minor in abundance but occur ubiquitously in International Ocean Discovery Program Hole U1473A, Southwest Indian Ridge. The trace element abundances of high-Ti brown amphibole, plagioclase, and zircon in veins, as well as the presence of myrmekitic texture in the studied felsic rocks support crystallization origin from highly-evolved melts, probably controlled by fractional crystallization. Based on geochemical criteria and texture of the mineral assemblage in felsic rocks and their relationship with host gabbros, they can be divided into three types: (1) Felsic rock with sharp boundaries is formed when felsic melt intrudes into fractures of host gabbros, resulting in minimal interaction between the melt and the wall minerals. (2) Replacive felsic rock, which is characterized by a pseudomorphic replacement of minerals in the host gabbro. This vein type is caused by the replacement of the host mineralogy by minerals in equilibrium with the felsic melts. (3) Felsic rock with diffused boundaries is formed either by infiltration of felsic melt into the solidifying gabbro body or crystallization of interstitial melts. Infiltration modes of felsic melts are likely controlled by the temperature condition of the cooling host gabbros.</jats:p>

収録刊行物

  • Minerals

    Minerals 8 (12), 583-, 2018-12-10

    MDPI AG

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