Unconformity between a Late Miocene-Pliocene accretionary prism (Nishizaki Formation) and Pliocene trench-slope sediments (Kagamigaura Formation), central Japan

Autor: Yamamoto, Yuzuru, Chiyonobu, Shun, Kurihara, Toshiyuki, Hina, Shoko, Hamahashi, Mari, Raimbourg, Hugues, Augier, Romain, Gadenne, Leslie
Přispěvatelé: Institute for Research on Earth Evolution [Yokosuka] (IFREE), Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Research Institute of Innovative Technology of the Earth (RITE), Niigata University, Institut des Sciences de la Terre d'Orléans - UMR7327 (ISTO), Centre National de la Recherche Scientifique (CNRS)-Université d'Orléans (UO)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire des Sciences de l'Univers en région Centre (OSUC), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Bureau de Recherches Géologiques et Minières (BRGM) (BRGM), Japan Society for the Promotion of Science (JSPS) through Grants-in-Aid for Scientific Research 21740363 and 22107507.
Jazyk: angličtina
Rok vydání: 2012
Předmět:
Zdroj: Island Arc
Island Arc, Wiley, 2012, 21 (4), pp.231-234. ⟨10.1111/j.1440-1738.2012.00820.x⟩
ISSN: 1038-4871
1440-1738
DOI: 10.1111/j.1440-1738.2012.00820.x⟩
Popis: International audience; Unconformities provide key geological evidence of a major tectonic event, a period without the deposition of sediment, or an environmental change (e.g. Tomkeieff 1962). In particular, an unconformity between an accretionary prism and trench-slope sediments at the toe of a plate-subduction margin provides information on the temporal and spatial evolution of tectonic processes during accretion (e.g. Strasser et al. 2009). Recently excavated outcrop at the southern tip of the Boso Peninsula, central Japan (Figs 1-3), contains an unconformity between a Late Miocene-Pliocene accretionary prism (the Nishizaki Formation) and Pliocene trench-slope sediments (the Kagamigaura Formation). There are major differences in the amount of clockwise rotation associated with multiple collisions of the Izu-Bonin Island Arc as well as tectonic structure between these formations (Yamamoto & Kawakami 2005).
Databáze: OpenAIRE
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