ヒマラヤ山脈のテクトニクスと東アジアの古環境・古気候の変動 Paleoenvironment and climate changes caused by the Himalayan Tectonics in the East Asia

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著者

    • 西 弘嗣 NISHI Hiroshi
    • 北海道大学大学院理学研究科地球科学専攻 Department of Earth and Planetary Sciences, Graduate School of Science, Hokkaido University
    • 高嶋 礼詩 TAKASHIMA Reishi
    • 北海道大学大学院理学研究科地球科学専攻 Department of Earth and Planetary Sciences, Graduate School of Science, Hokkaido University

抄録

The Indian subcontinent and Asian continent first contacted in the late Cretaceous (about 65Ma) and strongly collided after 52Ma because northward motion of the Indian Subcontinent slowed from 18-20cm/yr to 4.5cm/yr. Although the first record of uplift in Himalayan regions has been recorded during the Eocene. Major uplifts of the Himalayan Range and Tibetan Plateau and following sediment supply started from Oligocene through Miocene. Particularly, the rapid uplift stages of Himalayan-Tibetan regions have been recognized, at least. Around 8Ma and the last 1Ma based on sedimentological studies of marine terrestrial sequences. The micropaleontological studies in marine sequences revealed that the increased elevations in the Himalayan-Tibetan regions forced monsoonal circulation about 8Ma, which produced intense upwelling around the Arabian Sea and more seasonal climate changes of terrestrial sequences around the southern Asia. The hypothesis that uplift of plateaus and mountains caused large-scale climate changes during the Cenozoic is still unknown. However, an enhanced chemical weathering due to tectonic uplift in the Himalayan-Tibetan regions may be explained as the active driving force of the Cenozoic global cooling at the beginning of 50Ma.

収録刊行物

  • 石油技術協会誌

    石油技術協会誌 70(1), 6-14, 2005-01-01

    石油技術協会(The Japanese Association for Petroleum Technology)JAPT

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各種コード

  • NII論文ID(NAID)
    10013814348
  • NII書誌ID(NCID)
    AN00130976
  • 本文言語コード
    JPN
  • 資料種別
    REV
  • ISSN
    03709868
  • NDL 記事登録ID
    7259433
  • NDL 雑誌分類
    ZP29(科学技術--化学・化学工業--燃料--石油)
  • NDL 請求記号
    Z17-178
  • データ提供元
    CJP書誌  NDL  IR 
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