Age spectra of detrital zircon of the Jurassic clastic rocks of the Mino-Tanba AC belt in SW Japan: Constraints to the provenance of the mid-Mesozoic trench in East Asia

Wataru Fujisaki, Yukio Isozaki, Kenshi Maki, Shuhei Sakata, Takafumi Hirata, Shigenori Maruyama

    Research output: Contribution to journalArticle

    28 Citations (Scopus)

    Abstract

    U-Pb ages of detrital zircon grains were determined from an upper Middle Jurassic siliceous mudstone and two lower Upper Jurassic sandstones of the Mino-Tanba belt, Southwest Japan, by Laser-ablation ICPMS. The age spectra of detrital zircon grains of the three analyzed samples show multiple age clusters: 175-198. Ma (Early Jurassic), 202-284. Ma (Permian to Triassic), 336-431. Ma (Silurian to Carboniferous), and 1691-2657. Ma (Neoarchean to Paleoproterozoic). As per the Precambrian grains, the prominent peak exists around 1800-2000. Ma in all analyzed samples. The age clusters of 175-198. Ma, 202-284. Ma, and 336-431. Ma suggest that pre-Middle Jurassic Japan has exposed older granitic batholiths. The corresponding batholiths occur in the Cathaysian part of South China block. In contrast, the absence of them in modern Japan suggests that these batholiths were totally consumed by post-Jurassic tectonic erosion. The Neoarchean to Paleoproterozoic detrital zircon grains were derived from South China, North China, or possibly both of them; nonetheless, the circumstantial geologic lines of evidence point to South China, in particular to Cathaysia, rather than North China.

    Original languageEnglish
    Pages (from-to)62-73
    Number of pages12
    JournalJournal of Asian Earth Sciences
    Volume88
    DOIs
    Publication statusPublished - Jul 1 2014

    Keywords

    • Accretionary complex
    • Cathaysia
    • Detrital zircon
    • Jurassic
    • Provenance
    • U-Pb age

    ASJC Scopus subject areas

    • Geology
    • Earth-Surface Processes

    Fingerprint Dive into the research topics of 'Age spectra of detrital zircon of the Jurassic clastic rocks of the Mino-Tanba AC belt in SW Japan: Constraints to the provenance of the mid-Mesozoic trench in East Asia'. Together they form a unique fingerprint.

  • Cite this