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    Measuring the ‘Great Unconformity’ on the North China Craton using new detrital zircon age data

    He, T. and Zhou, Y. and Vermeesch, Pieter and Rittner, M. and Miao, L. and Zhu, M. and Carter, Andrew and Pogge von Strandmann, Philip A.E. and Shields, G.A. (2016) Measuring the ‘Great Unconformity’ on the North China Craton using new detrital zircon age data. Geological Society, London, Special Publications 448 , ISSN 0305-8719.

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    Abstract

    New detrital zircon ages confirm that the Neoproterozoic strata of the southeastern North China Craton (NCC) are mostly of early Tonian age, but that the Gouhou Formation, previously assigned to the Tonian, is Cambrian in age. A discordant hiatus of >150–300 myr occurs across the NCC, spanning most of the late Tonian, Cryogenian, Ediacaran and early Cambrian periods. This widespread unconformable surface is akin to the Great Unconformity seen elsewhere in the world and highlights a major shift in depositional style from largely erosional, marked by low rates of net deposition, during the mid- to late Neoproterozoic to high rates of transgressive deposition during the mid- to late Cambrian. The age spectra for the southeastern NCC and northern India are consistent with a provenance affinity linking the NCC and East Gondwana by c. 510 Ma.Supplementary material: Sample descriptions, sampling GPS locations and a compiled dataset of detrital zircon U–Pb LA-ICP-MS dating results are available at https://doi.org/10.6084/m9.figshare.c.3571119

    Metadata

    Item Type: Article
    Additional Information: Sample descriptions, sampling GPS locations and a compiled dataset of detrital zircon U–Pb LA-ICP-MS dating results are available at https://doi.org/10.6084/m9.figshare.c.3571119
    School: Birkbeck Schools and Departments > School of Science > Earth and Planetary Sciences
    Depositing User: Professor Andrew Carter
    Date Deposited: 30 Nov 2016 16:59
    Last Modified: 28 Sep 2017 05:54
    URI: http://eprints.bbk.ac.uk/id/eprint/16780

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