Volcanism in response to plate flexure

Naoto Hirano, Eiichi Takahashi, Junji Yamamoto, Watsue Abe, Stephanie P. Ingle, Ichiro Kaneoka, Takafumi Hirata, Jun Ichi Kimura, Teruaki Ishii, Yujiro Ogawa, Shiki Machida, Kiyoshi Suyehiro

    研究成果: Article

    172 引用 (Scopus)


    Volcanism on Earth is known to occur in three tectonic settings: divergent plate boundaries (such as mid-ocean ridges), convergent plate boundaries (such as island arcs), and hot spots. We report volcanism on the 135 million-year-old Pacific Plate not belonging to any of these categories. Small alkalic volcanoes form from small percent melts and originate in the asthenosphere, as implied by their trace element geochemistry and noble gas isotopic compositions. We propose that these small volcanoes erupt along lithospheric fractures in response to plate flexure during subduction. Minor extents of asthenospheric melting and the volcanoes' tectonic alignment and age progression in the direction opposite to that of plate motion provide evidence for the presence of a small percent melt in the asthenosphere.

    出版物ステータスPublished - 2006 9 8

    ASJC Scopus subject areas

    • General

    フィンガープリント Volcanism in response to plate flexure' の研究トピックを掘り下げます。これらはともに一意のフィンガープリントを構成します。

  • これを引用

    Hirano, N., Takahashi, E., Yamamoto, J., Abe, W., Ingle, S. P., Kaneoka, I., Hirata, T., Kimura, J. I., Ishii, T., Ogawa, Y., Machida, S., & Suyehiro, K. (2006). Volcanism in response to plate flexure. Science, 313(5792), 1426-1428. https://doi.org/10.1126/science.1128235