The discovery of the sporopollen fossils from the Middle Jurassic Yangye Formation in Qiemo area of Xinjiang and its geological significance

ZHAO Zhigang; ZHANG Xionghua; LI Xiaoyang; SUN Zhijia; ZENG Jiao; WANG Yunliang

2019 Vol. 38, No. 10

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ZHAO Zhigang, ZHANG Xionghua, LI Xiaoyang, SUN Zhijia, ZENG Jiao, WANG Yunliang. The discovery of the sporopollen fossils from the Middle Jurassic Yangye Formation in Qiemo area of Xinjiang and its geological significance[J]. Geological Bulletin of China, 2019, 38(10): 1603-1614.

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ZHAO Zhigang, ZHANG Xionghua, LI Xiaoyang, SUN Zhijia, ZENG Jiao, WANG Yunliang. The discovery of the sporopollen fossils from the Middle Jurassic Yangye Formation in Qiemo area of Xinjiang and its geological significance[J]. Geological Bulletin of China, 2019, 38(10): 1603-1614.

The discovery of the sporopollen fossils from the Middle Jurassic Yangye Formation in Qiemo area of Xinjiang and its geological significance

1.
The 7th Gold Detachment of Chinese Armed Police Force, Yantai 264004, Shandong, China
2.
Faculty of Earth Sciences, China University of Geosciences(Wuhan), Wuhan 430074, Hubei, China

More Information

Corresponding author: ZHANG Xionghua, 1065250198@qq.com

Received Date: 20 March 2019

Revised Date: 27 June 2019

Publish Date: 15 October 2019

Abstract

Abstract

Abundant sporopollen fossils, which include 37 genera and 81 species, were found for the first time in the Yangye Formation in Jiangalsay, Qiemo, Xinjiang. According to the characteristics and stratigraphic distribution of sporopollen fossils, the age of the Cyathidites-Neoraistrickia-Disacciatrileti belongs to the early stage of Middle Jurassic. The palynological assemblage is well correspondent to that of some regions in Northwest China and North China. By studying the kinship between the sporopollen components and vegetation types, the authors have reached the conclusion that the vegetation at the early stage of Middle Jurassic was mainly composed of Filicinae, lycopods conifers and cycad in Jiangalsay, which suggests that the paleclimate belonged to the tropicalsubtropical humid climate.
- sporopollen assemblages /
- Jiangalsay /
- early stage of Middle Jurassic /
- Yangye Formation /
- paleclimate

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References

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