Two episodes of evolution of trace fossils during the Early Triassic in the Guiyang area, Guizhou Province, South China

2015 ◽  
Vol 426 ◽  
pp. 275-284 ◽  
Author(s):  
Guo Shi ◽  
Adam D. Woods ◽  
Meiyi Yu ◽  
Hengye Wei
2018 ◽  
Vol 93 (1) ◽  
pp. 48-71 ◽  
Author(s):  
Xu Dai ◽  
Haijun Song ◽  
Arnaud Brayard ◽  
David Ware

AbstractBed-by-bed sampling of the lower portion of the Daye Formation at Gujiao, Guizhou Province, South China, yielded new Griesbachian–Dienerian (Induan, Early Triassic) ammonoid faunas showing a new regional Induan ammonoid succession. This biostratigraphic scheme includes in chronological order the late GriesbachianOphiceras mediumandJieshaniceras guizhouensebeds, and the middle DienerianAmbites radiatusbed. The latter is recognized for the first time as a separate biozone in South China. Eight genera and 13 species are identified, including one new species,Mullericeras gujiaoensen. sp. The new data show that a relatively high level of ammonoid taxonomic richness occurred rather rapidly after the Permian/Triassic mass extinction in the late Griesbachian, echoing similar observations in other basins, such as in the Northern Indian Margin.UUID:http://zoobank.org/a24a3387-f3dd-4da4-a134-84372352a63d


2015 ◽  
Vol 105 ◽  
pp. 104-121 ◽  
Author(s):  
Yanlong Chen ◽  
Haishui Jiang ◽  
Xulong Lai ◽  
Chunbo Yan ◽  
Sylvain Richoz ◽  
...  

2007 ◽  
Vol 81 (5) ◽  
pp. 858-872 ◽  
Author(s):  
LIN MU ◽  
Y. D. ZAKHAROV ◽  
WEN-ZHONG LI ◽  
SHU-ZHONG SHEN

2015 ◽  
Vol 4 (1) ◽  
pp. 99-108 ◽  
Author(s):  
Zeng-Zhao Feng ◽  
Zhi-Dong Bao ◽  
Xiu-Juan Zheng ◽  
Yuan Wang ◽  
Min Liu

2019 ◽  
Vol 8 (1) ◽  
Author(s):  
Ya-Fei Huang ◽  
David P. G. Bond ◽  
Yong-Biao Wang ◽  
Tan Wang ◽  
Zhi-Xing Yi ◽  
...  

2019 ◽  
Vol 157 (4) ◽  
pp. 677-689 ◽  
Author(s):  
Binsong Zheng ◽  
Chuanlong Mou ◽  
Renjie Zhou ◽  
Xiuping Wang ◽  
Zhaohui Xiao ◽  
...  

AbstractPermian–Triassic boundary (PTB) volcanic ash beds are widely distributed in South China and were proposed to have a connection with the PTB mass extinction and the assemblage of Pangea. However, their source and tectonic affinity have been highly debated. We present zircon U–Pb ages, trace-element and Hf isotopic data on three new-found PTB volcanic ash beds in the western Hubei area, South China. Laser ablation inductively coupled plasma mass spectrometry U–Pb dating of zircons yields ages of 252.2 ± 3.6 Ma, 251.6 ± 4.9 Ma and 250.4 ± 2.4 Ma for these three volcanic ash beds. Zircons of age c. 240–270 Ma zircons have negative εHf(t) values (–18.17 to –3.91) and Mesoproterozoic–Palaeoproterozoic two-stage Hf model ages (THf2) (1.33–2.23 Ga). Integrated with other PTB ash beds in South China, zircon trace-element signatures and Hf isotopes indicate that they were likely sourced from intermediate to felsic volcanic centres along the Simao–Indochina convergent continental margin. The Qinling convergent continental margin might be another possible source but needs further investigation. Our data support the model that strong convergent margin volcanism took place around South China during late Permian – Early Triassic time, especially in the Simao–Indochina active continental margin and possibly the Qinling active continental margin. These volcanisms overlap temporally with the PTB biocrisis triggered by the Siberian Large Igneous Province. In addition, our data argue that the South China Craton and the Simao–Indochina block had not been amalgamated with the main body of Pangea by late Permian – Early Triassic time.


2021 ◽  
pp. 103492
Author(s):  
Xu Dai ◽  
Zhiwei Yuan ◽  
Arnaud Brayard ◽  
Mingtao Li ◽  
Xiaokang Liu ◽  
...  
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