Imbricated ocean-plate stratigraphy and U-Pb zircon ages from tuff beds in cherts in the Ballantrae complex, SW Scotland

Yusuke Sawaki, Takazo Shibuya, Takahiro Kawai, Tsuyoshi Komiya, Soichi Omori, Tsuyoshi Iizuka, Takafumi Hirata, Brian F. Windley, Shigenori Maruyama

    Research output: Contribution to journalArticle

    22 Citations (Scopus)

    Abstract

    Ocean-plate stratigraphy (basalt, chert, clastics) of the Balcreuchan Group in the Ballantrae complex is repeated by layer-parallel thrusts to form duplex structures south of Bennane Head, ~5 km north of Ballantrae. Five tuff beds, all in chert, have similar U-Pb zircon ages of ca. 470 ± 10 Ma. The geometrical polarity of the duplexes and the zircon ages provide new constraints on the tectonic evolution of the accretionary wedge of the Ballantrae complex. Northwestward thrusting of the duplexes suggests that subduction was from the northwest to the southeast, and this polarity at the leading edge of the main ophiolite body is consistent with the northward younging of the volcanic arc rocks of the Ballantrae complex.

    Original languageEnglish
    Pages (from-to)454-464
    Number of pages11
    JournalBulletin of the Geological Society of America
    Volume122
    Issue number3-4
    DOIs
    Publication statusPublished - Apr 22 2010

    ASJC Scopus subject areas

    • Geology

    Fingerprint Dive into the research topics of 'Imbricated ocean-plate stratigraphy and U-Pb zircon ages from tuff beds in cherts in the Ballantrae complex, SW Scotland'. Together they form a unique fingerprint.

  • Cite this

    Sawaki, Y., Shibuya, T., Kawai, T., Komiya, T., Omori, S., Iizuka, T., Hirata, T., Windley, B. F., & Maruyama, S. (2010). Imbricated ocean-plate stratigraphy and U-Pb zircon ages from tuff beds in cherts in the Ballantrae complex, SW Scotland. Bulletin of the Geological Society of America, 122(3-4), 454-464. https://doi.org/10.1130/B26329.1