Sm-Nd dating of garnet granulites from the Kohistan complex, northern Pakistan

Hiroshi Yamamoto, Eizo Nakamura

    Research output: Contribution to journalArticlepeer-review

    42 Citations (Scopus)

    Abstract

    Sm-Nd mineral-isochron ages of garnet granulites in the southern part of the Kohistan complex are determined. The 91.0±6.3 Ma age is obtained from a granulite body of the Jijal complex at Pattan and the 69.5±9.3 Ma age is obtained from a granulite body of the Chilas complex at Zambil. These ages indicate that the granulite bodies at Pattan and at Zambil had cooled to below upper amphibolite facies by about 90 Ma and about 70 Ma respectively. The time of cooling of the granulite of the Jijal complex is comparable to the time-lapse of the Asia-Kohistan collision (102-75 Ma), although that of the Chilas complex is probably younger than the Asia-Kohistan collision and certainly older than the Asia-India collision (c. 50 Ma).

    Original languageEnglish
    Pages (from-to)965-969
    Number of pages5
    JournalJournal of the Geological Society
    Volume153
    Issue number6
    DOIs
    Publication statusPublished - Nov 1 1996

    Keywords

    • Granulites
    • Himalayas
    • Kohistan
    • Sm/Nd

    ASJC Scopus subject areas

    • Geology

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