Middle Jurassic radiolarian chert, Indarung, Padang District, and its implications for the tectonic evolution of western Sumatra, Indonesia

Andrew J. McCarthy, Basir Jasin, Neville S. Haile

    Research output: Contribution to journalArticle

    10 Citations (Scopus)

    Abstract

    Radiolaria from chert in the Indarung Area belong to the Transhsuum hisuikyoense Zone, indicating an Aalenian, lower Middle Jurassic, age. Carbonate in the area has been dated as Upper Jurassic to Lower Cretaceous from the occurrence of Lovcenipora, and overlying tuff has given a radiometric K/Ar age of 105 ± 3 (Albian, uppermost Lower Cretaceous). The chert and carbonate are probably in tectonic contact, with the chert faulted into the limestone during ENE-directed compression. This comprises one of the best dated occurrences of allochthonous material in Sumatra and confirms the accretion of oceanic material along the Sunda margin during Mid- to Late-Cretaceous times. (C) 2001 Elsevier Science Ltd. All rights reserved.

    Original languageEnglish
    Pages (from-to)31-44
    Number of pages14
    JournalJournal of Asian Earth Sciences
    Volume19
    Issue number1-2
    DOIs
    Publication statusPublished - 2001

    Fingerprint

    chert
    tectonic evolution
    Jurassic
    Cretaceous
    Aalenian
    carbonate
    radiolaria
    tuff
    compression
    accretion
    limestone
    tectonics
    material

    ASJC Scopus subject areas

    • Earth-Surface Processes
    • Geology

    Cite this

    Middle Jurassic radiolarian chert, Indarung, Padang District, and its implications for the tectonic evolution of western Sumatra, Indonesia. / McCarthy, Andrew J.; Jasin, Basir; Haile, Neville S.

    In: Journal of Asian Earth Sciences, Vol. 19, No. 1-2, 2001, p. 31-44.

    Research output: Contribution to journalArticle

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