湖北宜昌滚子坳剖面寒武系幸运阶顶底界线

潘时妹; 冯庆来

doi:10.3799/dqkx.2019.284

Volume 46 Issue 1

Jan. 2021

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Pan Shimei, Feng Qinglai, 2021. Lower and Upper Boundaries of Fortunian from Yichang, Hubei, China. Earth Science, 46(1): 136-147. doi: 10.3799/dqkx.2019.284

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Pan Shimei, Feng Qinglai, 2021. Lower and Upper Boundaries of Fortunian from Yichang, Hubei, China. Earth Science, 46(1): 136-147. doi: 10.3799/dqkx.2019.284

Pan Shimei, Feng Qinglai, 2021. Lower and Upper Boundaries of Fortunian from Yichang, Hubei, China. Earth Science, 46(1): 136-147. doi: 10.3799/dqkx.2019.284

Citation:

Pan Shimei, Feng Qinglai, 2021. Lower and Upper Boundaries of Fortunian from Yichang, Hubei, China. Earth Science, 46(1): 136-147. doi: 10.3799/dqkx.2019.284

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Lower and Upper Boundaries of Fortunian from Yichang, Hubei, China

doi: 10.3799/dqkx.2019.284

Pan Shimei^{1, 2, 3
,
,},
Feng Qinglai^{1, 3
,
,
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1.
State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences, Wuhan 430074, China
2.
Foshan Geological Bureau of Guangdong Province, Foshan 528000, China
3.
Faculty of Earth Sciences, China University of Geosciences, Wuhan 430074, China

Received Date: 2020-11-27
Publish Date: 2021-01-15

Abstract

Abstract

This paper is focused on the base of the Fortunian and Cambrian Stage 2 in the Gunziao section of Yichang, Hubei province. Thousands of SSFs has been found by dealing with 61 samples, 23 genera and 44 species to be identified and described. Additionally, some conclusions are drawn as follows. According to the first appearance datum of Asteridium and Protohertzina sp., and the large negative carbon isotope anomaly (BACE), the base of the Fortunian should be located at 10.5 meters above the Beds 1. According to the first appearance datum of Zhijinites longistriatus and the large positive carbon isotope anomaly (ZHUCE), it can be inferred that the base of Stage 2 is approximately 2.78 meters above the Beds 4. Purella antiqua Assemblage Zone (ZoneⅡ) and Aldanella yanjiahensis Assemblage Zone (ZoneⅢ) in Three Gorge area are redefined based on the new data, which is to be Purella antiqua-Siphogonuchites triangularis Assemblage Zone and Aldanella yanjiahensis-Zhijinites longistriatus Assemblage Zone.
- Cambrian,
- Fortunian Stage 2,
- small shelly fossils,
- AHC assemblage zone,
- Gunziao section,

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References(50)

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Lower and Upper Boundaries of Fortunian from Yichang, Hubei, China

doi: 10.3799/dqkx.2019.284

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