Measuring the 'Great Unconformity' on the North China Craton using new detrital zircon age data
Posted on 2016-11-07 - 15:36
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.
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He, Tianchen; Zhou, Ying; Vermeesch, Pieter; Rittner, Martin; Miao, Lanyun; Zhu, Maoyan; et al. (2016). Measuring the 'Great Unconformity' on the North China Craton using new detrital zircon age data. Geological Society of London. Collection. https://doi.org/10.6084/m9.figshare.c.3571119.v1
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AUTHORS (9)
TH
Tianchen He
YZ
Ying Zhou
PV
Pieter Vermeesch
MR
Martin Rittner
LM
Lanyun Miao
MZ
Maoyan Zhu
AC
Andrew Carter
PP
Philip A. E. Pogge Von Strandmann
GS
Graham A. Shields