Position of South China in configuration of Neoproterozoic supercontinent

Zheng, Yong‐Fei

doi:10.1007/bf02889741

Cited by 14 publications

(13 citation statements)

References 29 publications

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“…Although cold climatic conditions were recorded by low d 18 O zircons with U-Pb ages of *756-758 Ma (Zheng 2004;Zheng et al 2008a), yet no glacial sedimentary record is reported so far at ca. 760 Ma in the South China Block.…”

Section: Discussionmentioning

confidence: 95%

“…In contrast, based Electronic supplementary material The online version of this article (doi:10.1007/s00531-011-0746-z) contains supplementary material, which is available to authorized users. on paleomagnetic data, sequence stratigraphic observation, oxygen isotope composition, detrital zircon pattern and tectonic affinity of Neoproterozoic igneous rocks, some studies propose to place South China somewhere near India and Australia rather than between Australia and Laurentia Jiang et al 2003;Zhou et al 2002aZhou et al , 2004bZhou et al , 2006aYang et al 2004;Zheng et al 2003Zheng et al , 2008bZheng 2004;Zhao and Zhou 2007a, b;Yu et al 2008;Wang et al 2006Wang et al , 2007. In contrast with igneous rocks, the Neoproterozoic (probably some Mesoproterozoic) sedimentary sequences distributed in the Yangtze Block are poorly studied.…”

Section: Introductionmentioning

confidence: 95%

“…However, the number of participating cratons, their relative configuration within the supercontinent and the chronology and mode of assembly and breakup of the supercontinent are still under debate. One of the most controversial issues is the position of the South China Block within the Rodinia plate assembly (Li et al 1995(Li et al , 2008cZhou et al 2002bZhou et al , 2006bZheng 2004;Sun et al 2008;Yu et al 2008;Zheng et al 2008b;Wang et al 2006Wang et al , 2007. Li et al (1995) have placed the South China Block between Australia-East Antarctica and Laurentia as the ''missing-link'' between these two continents.…”

Section: Introductionmentioning

confidence: 97%

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Provenance and tectonic setting of Neoproterozoic sedimentary sequences in the South China Block: evidence from detrital zircon ages and Hf–Nd isotopes

Wang

Chen

et al. 2012

Int J Earth Sci (Geol Rundsch)

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Neoproterozoic sedimentary sequences in the South China Block provide great opportunity to examine the tectonic evolution and crustal accretion during this period. This study presents U-Pb ages and Hf isotope composition of detrital zircons and Nd isotope composition of whole rocks of the Neoproterozoic sequences from the Yangtze Block, part of the South China Block. Age patterns of detrital zircons imply that the source area experienced three major periods of magmatic activity at 2,300-2,560, 1,900-2,100 and 770-1,000 Ma and two major episodes of juvenile crust accretion at 2,600-3,400 and 770-1,000 Ma. The maximum age of the Gucheng glaciation can be restricted at *768 Ma from the youngest detrital zircon ages, probably corresponding to the Kaigas glaciation rather than to the Sturtian glaciation. High La/Sc ratio and low Cr/Th, Sc/Th and Co/Th ratios of the sedimentary rocks point to a derivation from dominantly felsic upper continental crustal sources, whereas large variation of e Nd (t) and e Hf (t) values indicates that mantle-derived magmatic rocks also provided material to the sedimentary sequences in different degrees. The shift in e Nd (t) values of whole rocks and U-Pb age spectra of detrital zircons records the evolution from a back-arc to retro-arc foreland to a rift basin. Age distribution of detrital zircons from the Neoproterozoic sequences, compared with those of the major crustal blocks of Rodinia, implies that the position of the Yangtze Block was probably adjacent to northern India rather than between Australia and Laurentia before the breakup of the Rodinia supercontinent.

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Section: Discussionmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 97%

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Provenance and tectonic setting of Neoproterozoic sedimentary sequences in the South China Block: evidence from detrital zircon ages and Hf–Nd isotopes

Wang

Chen

et al. 2012

Int J Earth Sci (Geol Rundsch)

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“…Significant superplume activity induced a series of tectono-thermal events and finally resulted in the breakup of the Rodinia in the Neoproterozoic. Published a batch of papers from approvers and opponents promoted evolutional research processes on the South China Block (Yan et al 2002;Li et al 2002b;Wang and Pan 2009;Zheng 2004;Zheng et al 2008). The SCB has attracted considerable attention in terms of its widespread and multi-episodes of the Phanerozoic magmatism and related polymetallic mineral resources including W, Sn, U, and REE deposits.…”

Section: The South China Blockmentioning

confidence: 97%

General Precambrian Geology in China

Zhai

Zhou

2015

Precambrian Geology of China

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The Earth has an evolving history ca. 4.6 Ga old. Precambrian continents experienced complex geological evolution since the Early Precambrian onward and carry important records of the secular changes in tectonics and metallogeny, including, at least, three important tectonic events that are Neoarchean enormous crustal growth, tectonic regime inversion from pre-plate tectonics to plate tectonics, and Paleoproterozoic great oxygen event (GOE). Without question, Precambrian geology is a key issue to understand continental geology. Precambrian rocks are extensively distributed in China, not only in cratons, but also in Phanerozoic orogenic belts. The Chinese continent consists of several cratons and surrounding Phanerozoic orogenic belts (folded belts). The main old lands in China include the North China Block (NCB), South China Block (SCB), and Tarim Block (TRB), all of which have individual tectonic evolving histories. The NCB experienced complex geological evolution since the Early Precambrian onward and carries important records from the old continental nuclei, giant crustal growth episode, and cratonization (stabilization), then to the Paleoproterozoic rifting-subduction-accretioncollision with imprints of the GOE, and to the Late PaleoproterozoicNeoproterozoic multistage rifting representing North China platform tectonic features. The TRB has two-layer basement of the Early Precambrian metamorphic complexes and Neoproterozoic sedimentary sequences. Three till sheets have been reported. The SCB consists of the Yangtze Block (YZB) and Cathaysia Block (CTB) that were cohered in the Neoproterozoic. The YZB recorded tectonic processes of the Early Precambrian crustal growth, 1.0-0.9 and 0.8-0.6 Ga metamorphic-magmatic events, and two Neoproterozoic glaciations. The CTB consists of ca. 1.8, 1.0-0.9 Ga, and ca. 0.8 Ga granitic gneisses and metamorphic rocks, indicating there was a vast Precambrian basement. The Neoproterozoic sedimentary rocks overlie partly on the basement. That the YZB and CTB have a Neoproterozoic uniform cover layer illustrates the SCB should form, at least, during 1.0-0.9 Ga. The Nanhua Rift System developed in the SCB in ca. 0.8-0.7 Ga, which probably represented a global event indicating breakup of the Rodinia Supercontinent. The Central Chinese Orogenic System with high-ultra-high-pressure metamorphic rocks supports a suggestion that the above-mentioned three old lands were collided to assemble a unified Chinese continent during the Pangea orogenic period.

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“…Neoproterozoic (850-630 Ma) magmatic rocks are widely distributed in the northern, western and southeastern margins of the Yangtze Block, which is considered to be part of the Rodinia supercontinent [1][2][3]. 850-630 Ma magmatic rocks are mainly composed of granitoid plutons and associated mafic-ultramafic intrusions and coeval volcanic rocks [4][5][6][7][8][9][10][11][12][13][14][15][16].…”

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confidence: 99%