Mid-Neoproterozoic angular unconformity in the Yangtze Block revisited: Insights from detrital zircon U–Pb age and Hf–O isotopes

Yang, Chuan; Li, Xian‐Hua; Wang, Xuan‐Ce; Zhang, Lan

doi:10.1016/j.precamres.2015.05.016

Cited by 67 publications

(20 citation statements)

References 117 publications

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“…Comparison of detrital zircon ages of metasedimentary rocks with similar depositional age in the Chinese CTB and Yili Block (this study; Huang et al, ), Tarim Craton (He, Zhu, & Ge, ; He, Zhu, Ge, Zheng, & Wu, ), North China Craton (Luo et al, ; Wan et al, ; Xia, Sun, Zhao & Luo, ; Xia, Sun, Zhao, Wu, et al, ), Siberian Craton (Glorie et al, ; Khudoley et al, ; Powerman et al, ), Amazonian Craton (Babinski et al, 2013; Geraldes et al, ), Yangtze Block (Wang et al, ; Yang et al, ), Cathaysia Block (Yao et al, ; Yu et al, , ), African (Anderson et al, ; Babinski, et al, ; Foster et al, ; Konopásek et al, ; Linol et al, ), Antarctican (Grew et al, ; Marschall et al, ; Takamura et al, ; Wang et al, ), and Indian blocks (Collins et al, ; Dharmapriya et al, ; Li et al, ; Plavsa et al, 2012).…”

Section: Discussionmentioning

confidence: 61%

“…The Yangtze Block in the South China could neither be the potential origin for the CTB, since detrital zircons from Meso‐Neoproterozoic sediments in the Yangtze Block have age peaks at ca. 2.4–2.5 and 3.5 Ga with only inconspicuous peak at 1.4–1.6 Ga (Figure f; Wang et al, ; Yang et al, ). For the same reasons, the African (Figure h; Anderson et al, ; Babinski et al, ; Foster et al, ; Konopásek et al, ; Linol et al, ), Antarctican (Figure l; Grew et al, ; Marschall et al, ; Takamura et al, ; Wang et al, ), Indian (Figure j; Collins et al, ; Dharmapriya et al, ; Li et al, ; Plavsa et al, ), and Australian blocks (Figures b–d; Smits et al, , and references therein) are also excluded for the CTB's origin.…”

Section: Discussionmentioning

confidence: 92%

“…Meso‐Neoproterozoic metasedimentary rocks widely crop out in the CTB, and their detrital provenance is crucial in revealing the switching process from the breakup of Nuna to the assembly of Rodinia. The U‐Pb and Lu‐Hf isotope systems of detrital zircons are able to record tectonomagmatic events and thus are excellent to decipher the tectonic process for such a transition (Barth et al, ; Coogan & Hinton, ; Gehrels, ; Gerdes & Zeh, , ; Rojas‐Agramonte et al, ; Yang et al, ). In this paper, we present new zircon U‐Pb and Hf data for the metasedimentary rocks in the CTB, which, combined with geological and igneous/detrital zircon data from its neighbor blocks, aim to elucidate (1) the detrital zircon provenance and Precambrian crustal evolution of the CTB, (2) the tectonic affinity of the CTB, and (3) the switching process from the breakup of Nuna to the assembly of Rodinia.…”

Section: Introductionmentioning

confidence: 99%

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From Breakup of Nuna to Assembly of Rodinia: A Link Between the Chinese Central Tianshan Block and Fennoscandia

et al. 2019

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The transition from breakup of Nuna (or Columbia, 2.0-1.6 Ga) to assembly of Rodinia (1.0-0.9 Ga) is investigated by means of U-Pb and Lu-Hf data of detrital zircons from three Neoproterozoic metasedimentary rocks in the Central Tianshan Block (CTB), NW China. These data yield six age peaks around 1.0, 1.13, 1.34, 1.4-1.6, 1.75, and 2.6 Ga. Few zircons are detected between 2.0 and 2.5 Ga. The Paleoproterozoic to Neoproterozoic detrital zircons have Hf isotopic compositions (−22.1 to +13.0) similar to those of coeval magmatic rocks in the CTB, indicating a proximal provenance. These results, together with the geological evidence and the presence of 1.4 Ga orogenic granitoids in the CTB, rule out most cratons as the CTB sources but support a Fennoscandia ancestry. Zircon U-Pb ages and Hf isotopic compositions from the CTB and Fennoscandia suggest that from 1.8 to 1.4 Ga, the ε Hf (t) values increased toward more positive values, consistent with an exterior orogen characteristic that the lower crust was replaced by a juvenile arc crust. In contrast, from 1.4 to 0.9 Ga, zircon ε Hf (t) values decreased to more negative values, reflecting an interior orogen, characterized by enhanced contribution of recycled crustal material from collided continental fragments. This marked shift most likely reflected a transition from breakup of Nuna to assembly of Rodinia, accomplished by a transformation from an exterior orogen to an interior one.

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Section: Discussionmentioning

confidence: 61%

Section: Discussionmentioning

confidence: 92%

Section: Introductionmentioning

confidence: 99%

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From Breakup of Nuna to Assembly of Rodinia: A Link Between the Chinese Central Tianshan Block and Fennoscandia

et al. 2019

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“…Predominant detrital zircons in the Sibao Group have Neoproterozoic ages ranging from 980 to 822 Ma, and the youngest grains have a weighted mean age of 835.3 ± 3.6 Ma (Wang et al, 2012b), giving the maximum depositional age of the group at 830 Ma (Yang et al, 2015). The weighted mean age of 824 ± 5 Ma of the mafic-ultramafic dykes and granitoids, intruded into the Sibao Group, constrains the group deposited in a short time interval of 830 Ma to 824 Ma (Wang et al, 2012b;Yang et al, 2015). The age of a tuffaceous siltstone from the upper Danzhou Group is 801 ± 4 to 778 ± 5 Ma (Gao et al, 2013;Cui et al, 2016).…”

Section: Yangtze Cratonmentioning

confidence: 99%

Tonian Tectonic‐Strata Regions and their Geological Significance in China

Yong

Zhang

et al. 2020

Acta Geologica Sinica (Eng)

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The continent of China developed through the coalescence of three major cratons (North China, Tarim and Yangtze) and continental micro‐blocks through the processes of oceanic crust disappearance and acceretionary‐collision of continental crusts. The strata of the Chinese continental landmass are subdivided into 12 tectonic‐strata regions. Based on the composition of geological features among the three main cratons, continental micro‐blocks and other major global cratons, their affinities can be preliminarily deduced during the Tonian period, using evidence from sedimentary successions, paleobiogeography, tectonic and magmatic events. The Yangtze and Tarim cratons show that they have close affinities during the assembly‐dispersal milestone of the Rodinia Supercontinent. The sedimentary record and magmatic age populations in the blocks suggest that there was a widespread, intensive magmatic event that resulted from a subduction process during ∼1000–820 Ma, related to continental rifting around the Yangtze and Tarim cratons. However, they differ greatly from the North China Craton. The continental micro‐blocks in the Panthalassic Ocean could have some missing connection with the North China Craton that persisted until the Middle‐Late Devonian. In contrast, the Alxa Block showed a strong affinity with the Tarim Craton. The revised Tonian paleogeography of the Rodinia Supercontinent is a good demonstration of how to show the relationship between the main cratons and the continental micro‐blocks.

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“…Cawood et al 2017), although the exact nature of this suturing remains a subject of debate (e.g. Charvet 2013; see discussions in Yang et al 2016 andWang et al 2014). Subsequent to that suturing, during the late Neoproterozoic, the Yangtze Block became an extensive shallow-marine carbonate platformslope-basin ( Fig.…”

Section: Introductionmentioning

confidence: 99%

A refined late-Cryogenian – Ediacaran earth history of South China: Phosphorous-rich marbles of the Dabie and Sulu orogens

Prave

Meng

Lepland

et al. 2018

Precambrian Research

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The late-Cryogenian-Ediacaran geological framework for South China is constructed principally from sedimentary successions preserved in the central and western regions of the Yangtze Block. New stratigraphic and carbonate-carbon isotope data allow us to extend that framework into the exhumed HP-UHP subduction complexes of the eastern Dabie and Sulu orogens that separate the South and North China cratons. Those data show that marble and phosphorous-rich (P-rich) units in those complexes were originally part of an Ediacaran shallow-marine shelf-carbonate platform. The basal pebbly schist (metadiamictite) and lowermost P-rich marble of the Jinping Formation (Haizhou Group) in the Sulu Orogen matches in both facies character and C-isotope profile that of the Marinoan-equivalent glacialcap carbonate couplet of the Nantuo and Doushantuo formations. The Daxinwu Formation (Susong Group) in the eastern Dabie Orogen contains a marble unit that has, for several hundreds of metres, a strikingly uniform C-isotope profile of low  13 C positive values and is overlain by a P-rich graphitic schist; these features match those of the late Ediacaran to early Cambrian Dengying Formation. These correlations establish that the HP-UHP metasedimentary rocks, many of which were once considered to be Palaeo-to Mesoproterozoic in age, are a Neoproterozoic-age cover sequence of the continental margin 2 of the Yangtze Block. Further, their widespread development limits their utility as indicators of offset across the Tan-Lu fault zone and, instead, favours tectonic models that interpret that feature as a continental-scale tear fault formed during the Mesozoic collision and suturing of the North and South China cratons.

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Mid-Neoproterozoic angular unconformity in the Yangtze Block revisited: Insights from detrital zircon U–Pb age and Hf–O isotopes

Cited by 67 publications

References 117 publications

From Breakup of Nuna to Assembly of Rodinia: A Link Between the Chinese Central Tianshan Block and Fennoscandia

From Breakup of Nuna to Assembly of Rodinia: A Link Between the Chinese Central Tianshan Block and Fennoscandia

Tonian Tectonic‐Strata Regions and their Geological Significance in China

A refined late-Cryogenian – Ediacaran earth history of South China: Phosphorous-rich marbles of the Dabie and Sulu orogens

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