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

He, T; Zhou, Y; Vermeesch, P; Rittner, M; Miao, L; Zhu, M; Carter, A; ... Shields, G; + view all (2016) Measuring the 'Great Unconformity' on the North China Craton using new detrital zircon age data. Geological Society, Special Publications , 448 , Article SP448.14. 10.1144/SP448.14. Green open access

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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.

Type: Article
Title: Measuring the 'Great Unconformity' on the North China Craton using new detrital zircon age data
Open access status: An open access version is available from UCL Discovery
DOI: 10.1144/SP448.14
Publisher version: http://doi.org/10.1144/SP448.14
Language: English
Additional information: Copyright © 2016 The Author(s). Published by The Geological Society of London. All rights reserved
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Earth Sciences
URI: https://discovery.ucl.ac.uk/id/eprint/1514454
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