Tracing the position of the South China block in Gondwana: U–Pb ages and Hf isotopes of Devonian detrital zircons

2011 ◽  
Vol 19 (1) ◽  
pp. 141-149 ◽  
Author(s):  
Liang Duan ◽  
Qing-Ren Meng ◽  
Cheng-Li Zhang ◽  
Xiao-Ming Liu
Keyword(s):  
South China ◽  
Detrital Zircons ◽  
Hf Isotopes ◽  
South China Block ◽  
The South

Detrital zircon geochronology of pre-Cretaceous strata: tectonic implications for the Jiangnan Orogen, South China

2014 ◽  
Vol 151 (6) ◽  
pp. 975-995 ◽  
Author(s):  
JINBAO SU ◽  
SHUWEN DONG ◽  
YUEQIAO ZHANG ◽  
YONG LI ◽  
XUANHUA CHEN ◽  
...  
Keyword(s):  
South China ◽  
North China ◽  
Seismic Profile ◽  
Upper Jurassic ◽  
Detrital Zircons ◽  
South China Block ◽  
Yangtze Block ◽  
The South ◽  
Provenance Data ◽  
Cathaysia Block

AbstractFifteen sandstone samples taken from pre-Cretaceous strata of the Yangtze Block are analysed to constrain the evolution of the South China Block, especially the assembly between the Yangtze and Cathaysia blocks. The results show that the maximum depositional age of the Neoproterozoic Lengjiaxi Group adjacent to the Cathaysia Block isc. 830 Ma, differing from that of the Kunyang and Dahongshan groups (> 960 Ma) on the southwestern margin of the Yangtze Block. The detrital zircons from Palaeozoic samples from the Yangtze Block have similar age populations to those in the Cathaysia Block, and they may originate from the Cathaysia Block according to palaeogeographic, palaeocurrent and former research data. The detrital zircons of Middle–Upper Jurassic sandstones in the southwestern and central Yangtze Block yield dominant age populations at 2.0–1.7 Ga and subordinate groups of 2.6–2.4 Ga, 0.8–0.7 Ga and 0.6–0.4 Ga. The Upper Triassic strata may be derived from the southern Yangtze and North China blocks due to the collisions between the Indosina, South China and North China blocks, whereas the Jurassic sediments may be partly derived from uplift and erosion of the Jiangnan Orogen due to an intracontinental orogeny induced by Pacific subduction towards the Eurasia Plate. The detrital age spectra and provenance data for basement in the South China Block are analysed and compared with each other. The South China Block has affinity with Australia not only in the Columbia supercontinent but also in the Rodinia supercontinent. We infer the existence of an ancient orogen under the western Jiangnan Orogen, which may have occurred during the Columbia age, earlier than the Sibao orogeny. This is supported by seismic profile proof from the SinoProbe.

Provenance investigation for the Cambrian–Ordovician strata from the northern margin of the western Yangtze Block: implications for locating the South China Block in Gondwana

2019 ◽  
Vol 157 (4) ◽  
pp. 551-572
Author(s):  
Liang Luo ◽  
Lianbo Zeng ◽  
Kai Wang ◽  
Xiaoxia Yu ◽  
Yihang Li ◽  
...  
Keyword(s):  
South China ◽  
Detrital Zircons ◽  
North India ◽  
South China Block ◽  
Yangtze Block ◽  
The South ◽  
Northern Margin ◽  
Cathaysia Block ◽  
Early Palaeozoic ◽  
Early Neoproterozoic

AbstractWe report new U–Pb isotopic data for detrital zircons from Cambrian–Ordovician strata on the northern margin of the western Yangtze Block, which together with published U–Pb isotopic data for coeval strata in the South China Block, provide critical constraints on the provenance of these sediments and further shed light on the early Palaeozoic position of the South China Block in the context of Gondwana. Detrital zircons in this study yield four major age peaks in the early Palaeoproterozoic, early Neoproterozoic, middle Neoproterozoic and late Neoproterozoic – early Palaeozoic. The dominant age population of 900–700 Ma matches well with magmatic ages from the nearby Panxi–Hannan Belt, which indicates that Cambrian–Ordovician sedimentary rocks in the western Yangtze Block were mainly of local derivation. However, compilations of detrital zircon ages for the Cambrian–Ordovician strata from the Cathaysia Block and the eastern Yangtze Block show that both blocks are dominated by late Mesoproterozoic- and early Neoproterozoic-aged detrital zircons, which suggests a remarkable exotic input with typical Gondwana signatures. According to the integrated detrital zircon age spectra of the Cambrian–Ordovician sedimentary rocks from the entire South China Block and palaeocurrent data, the South China Block should have been linked with North India and Western Australia within East Gondwana. Specifically, the Cathaysia Block was located adjacent to Western Australia, while the Yangtze Block was connected with North India.

scholarly journals New detrital zircon U–Pb insights on the palaeogeographic origin of the central Sanandaj–Sirjan zone, Iran

2021 ◽  
pp. 1-22
Author(s):  
Farzaneh Shakerardakani ◽  
Franz Neubauer ◽  
Xiaoming Liu ◽  
Yunpeng Dong ◽  
Behzad Monfaredi ◽  
...  
Keyword(s):  
South China ◽  
Detrital Zircon ◽  
Sediment Supply ◽  
Detrital Zircons ◽  
South China Block ◽  
The South ◽  
Clastic Rocks ◽  
Gondwana Margin ◽  
Metamorphic Zone ◽  
North Gondwana

Abstract New detrital U–Pb zircon ages from the Sanandaj–Sirjan metamorphic zone in the Zagros orogenic belt allow discussion of models of the late Neoproterozoic to early Palaeozoic plate tectonic evolution and position of the Iranian microcontinent within a global framework. A total of 194 valid age values from 362 zircon grains were obtained from three garnet-micaschist samples. The most abundant detrital zircon population included Ediacaran ages, with the main age peak at 0.60 Ga. Other significant age peaks are at c. 0.64–0.78 Ga, 0.80–0.91 Ga, 0.94–1.1 Ga, 1.8–2.0 Ga and 2.1–2.5 Ga. The various Palaeozoic zircon age peaks could be explained by sediment supply from sources within the Iranian microcontinent. However, Precambrian ages were found, implying a non-Iranian provenance or recycling of upper Ediacaran–Palaeozoic clastic rocks. Trace-element geochemical fingerprints show that most detrital zircons were sourced from continental magmatic settings. In this study, the late Grenvillian age population at c. 0.94–1.1 Ga is used to unravel the palaeogeographic origin of the Sanandaj–Sirjan metamorphic zone. This Grenvillian detrital age population relates to the ‘Gondwana superfan’ sediments, as found in many Gondwana-derived terranes within the European Variscides and Turkish terranes, but also to units further east, e.g. in the South China block. Biogeographic evidence proves that the Iranian microcontinent developed on the same North Gondwana margin extending from the South China block via Iran further to the west.

Spatio-temporal evolution and dynamic origin of Jurassic-Cretaceous magmatism in the South China Block

2021 ◽  
Vol 217 ◽  
pp. 103605
Author(s):  
Xianzhi Cao ◽  
Nicolas Flament ◽  
Sanzhong Li ◽  
R. Dietmar Müller
Keyword(s):  
South China ◽  
Temporal Evolution ◽  
South China Block ◽  
The South ◽  
Spatio Temporal ◽  
Cretaceous Magmatism

scholarly journals Thrusting, exhumation and basin fill on the western margin of the South China block during India-Asian collision

2018 ◽  
Author(s):  
Kai Cao ◽  
Guocan Wang ◽  
Philippe Hervé Leloup ◽  
Wei Mahéo ◽  
Yadong Xu ◽  
...  
Keyword(s):  
South China ◽  
South China Block ◽  
The South ◽  
Western Margin ◽  
Basin Fill
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