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

23 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 - 2010
Externally publishedYes

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duplex
tuff
zircon
stratigraphy
chert
ocean
accretionary prism
ophiolite
tectonic evolution
island arc
subduction
thrust
basalt
rock

ASJC Scopus subject areas

  • Geology

Cite this

Imbricated ocean-plate stratigraphy and U-Pb zircon ages from tuff beds in cherts in the Ballantrae complex, SW Scotland. / Sawaki, Yusuke; Shibuya, Takazo; Kawai, Takahiro; Komiya, Tsuyoshi; Omori, Soichi; Iizuka, Tsuyoshi; Hirata, Takafumi; Windley, Brian F.; Maruyama, Shigenori.

In: Bulletin of the Geological Society of America, Vol. 122, No. 3-4, 2010, p. 454-464.

Research output: Contribution to journalArticle

Sawaki, Y, Shibuya, T, Kawai, T, Komiya, T, Omori, S, Iizuka, T, Hirata, T, Windley, BF & 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, vol. 122, no. 3-4, pp. 454-464. https://doi.org/10.1130/B26329.1
Sawaki, Yusuke ; Shibuya, Takazo ; Kawai, Takahiro ; Komiya, Tsuyoshi ; Omori, Soichi ; Iizuka, Tsuyoshi ; Hirata, Takafumi ; Windley, Brian F. ; Maruyama, Shigenori. / Imbricated ocean-plate stratigraphy and U-Pb zircon ages from tuff beds in cherts in the Ballantrae complex, SW Scotland. In: Bulletin of the Geological Society of America. 2010 ; Vol. 122, No. 3-4. pp. 454-464.
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AU - Omori, Soichi

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