太古代の地球磁場  [in Japanese] The Earth's Magnetic Field during the Archean  [in Japanese]

Access this Article

Search this Article

Author(s)

Abstract

Knowledge of the Earth's magnetic field during Archean and Proterozoic times can provide important sources of information for understanding the internal and environmental evolution of the Earth. The long-term variation in field intensity and reversal rate is considered to reflect mode changes in powering the geodynamo. Several recent efforts to reconstruct the magnetic field of the early Earth have reported relatively low to moderate field accompanied by occasional polarity reversals. The volume of reliable paleomagnetic data, however, is still insufficient to characterize its long-term nature. Here, recent paleointensity and paleodirectional studies on Archean and Proterozoic rocks including our new findings are reviewed, and their problems and further perspectives are argued.

Journal

  • Journal of Geography (Chigaku Zasshi)

    Journal of Geography (Chigaku Zasshi) 114(2), 212-222, 2005-04-25

    Tokyo Geographical Society

References:  52

Codes

  • NII Article ID (NAID)
    10017473190
  • NII NACSIS-CAT ID (NCID)
    AN00322536
  • Text Lang
    JPN
  • Article Type
    REV
  • ISSN
    0022135X
  • NDL Article ID
    7366443
  • NDL Source Classification
    ZM41(科学技術--地球科学)
  • NDL Call No.
    Z15-169
  • Data Source
    CJP  NDL  J-STAGE 
Page Top