Characteristics and significance of palynological assemblage of Ziliujing Formation and Shaximiao Formation in Yanjin area, Yunnan Province

HE Ping; XIE Yuan; LIU Jianqing; HE Li; LUO Yan

2020 Vol. 39, No. 4

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HE Ping, XIE Yuan, LIU Jianqing, HE Li, LUO Yan. Characteristics and significance of palynological assemblage of Ziliujing Formation and Shaximiao Formation in Yanjin area, Yunnan Province[J]. Geological Bulletin of China, 2020, 39(4): 442-449.

Citation:

HE Ping, XIE Yuan, LIU Jianqing, HE Li, LUO Yan. Characteristics and significance of palynological assemblage of Ziliujing Formation and Shaximiao Formation in Yanjin area, Yunnan Province[J]. Geological Bulletin of China, 2020, 39(4): 442-449.

Characteristics and significance of palynological assemblage of Ziliujing Formation and Shaximiao Formation in Yanjin area, Yunnan Province

1.
College of Earth Sciences, Chengdu University of Technology, Chengdu 610059, Sichuan, China
2.
Chengdu Center, China Geological Survey, Chengdu 610081, Sichuan, China

More Information

Corresponding author: LIU Jianqing, liujq1@tom.com

Received Date: 23 July 2019

Revised Date: 15 November 2019

Publish Date: 15 April 2020

Abstract

Abstract

Based on the characteritics and regularities of palynological assemblage of Ziliujing Formation and Shaximiao Formation of Jurassic in Yanjin area of Yunnan Province, the results show that the pollen of gymnosperms dominates the Ziliujing Formation, while the content of fern spores is low.Pinuspollenites are dominant in the pollen of gymosperms, while only Laevigatosporites were found in the spores of ferns.The Early Jurassic Ziliujing Formation belongs to the tropical semi-arid tropical climate.Pinuspollenites are dominant in the pollen of gymnosperms in Shaximiao Formation, including Psophosphaera, Classopollis, etc.The content of Neoraistrickiais the highest in fern spores.The Middle Jurassic Shaximiao Formation had tropical or subtropical climate.
- Yanjin /
- Ziliujing Formation /
- Shaximiao Formation /
- palynological assemblage /
- stratigraphic age /
- paleoclimate

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