北部オマーン山脈サマイル・オフィオライトの地質 Geology of the Semail Ophiolite, Northern Oman Mountains

この論文にアクセスする

この論文をさがす

著者

抄録

Geology of the Semail ophiolite, northern Oman Mountains, is reviewed. The ophiolite is one of the lragest in the world with an extension of 500 km along the Oman Mountains, which is a part of a series of nappes abducted onto the Arabian Continent during the closure of the Tetheys Sea at the end of Cretaceous. It preserves almost complete sections up to 14 km thick which are expected for the upper part of oceanic lithosphere formed at medium to fast spreading ridges : pillow and sheet flows with little intervening volcaniclastics, well developed sheeted dike swarm, large continuous plutonic bodies, and harzburgitic tectonite with foliations and lineations indicative of diapiritic upwelling, in desending order. These are superposed and modified by subsequent magmatic and tectonic episodes during the obduction, such as later lavas and plutonic bodies with island-arc affinities, deep erosion down to the sheeted dike swarm, steep low-T sheare zones in the mantle peridotite, and milonitic deformation at the base of the nappes.<BR>Although the Semail ophiolite possesses many structural and volcanological similarities to the mid-ocean ridges, depleted but less primitive lava geochemistry cannot be reconciled by the origin as such, and still needs further research not only on ophiolites but also on the ocean floors.

収録刊行物

  • 地學雜誌  

    地學雜誌 104(3), 321-349, 1995-06-25 

    Tokyo Geographical Society

参考文献:  42件

参考文献を見るにはログインが必要です。ユーザIDをお持ちでない方は新規登録してください。

被引用文献:  4件

被引用文献を見るにはログインが必要です。ユーザIDをお持ちでない方は新規登録してください。

各種コード

  • NII論文ID(NAID)
    10002232556
  • NII書誌ID(NCID)
    AN00322536
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    0022135X
  • NDL 記事登録ID
    3609857
  • NDL 雑誌分類
    ZM41(科学技術--地球科学)
  • NDL 請求記号
    Z15-169
  • データ提供元
    CJP書誌  CJP引用  NDL  J-STAGE 
ページトップへ