| 著者名 | Authors | 所属機関名 | 所属機関名(欧文) | |
| 1 | #畠山/唯達 | Hatakeyama/Tadahiro | 東京大学理学部地球惑星物理学教室 | Dept. of Earth and Planetary Physics, Faculty of Science, |
| 2 | 浜野/洋三 | Hamano/Yozo | 東京大学理学部地球惑星物理学教室 | Dept. of Earth and Planetary Physics, Faculty of Science, |
講演予稿:
西オーストラリア，ピルバラ地塊の縞状鉄鉱床(BIF)について，含
まれる磁性鉱物の同と残留磁化の成分の分離を行った．その結果，
主成分であるヘマタイトのほかにゲータイトを３割以下含み，これ
らが自然残留磁化全体の約１割の残留磁化を担っていることがわか
った．しかし，この成分はすでに発見されているヘマタイトの持つ
残留磁化の逆転には寄与していない．
abstract:
Rockmagnetic studies have been done on an Archean Banded Iron
Formation in north-western Australia, in which paleomagnetic
reversals are shown. From the result, it is indicated (1) that the
main ferromagnetic mineral in the BIF is hematite and the BIF also
contains goethite by 3/10 of the contained hematite at most, (2)
that these goethite minerals have crystallied around the hematite
crystals, (3) that goethite contributes to the remanent
magnetization of the BIF about by 10%, and (4) that the remanence
carried by goethite has been recently acquired and is directed to
キーワード:
縞状鉄鉱床,古地磁気,岩石磁気,針鉄鉱,赤鉄鉱
Keywords:
Banded Iron Formation, Paleomagnetism, Rockmagnetism, Geothite, Hematite