神农架成冰纪宋洛生物群的赋存层位厘定

安志辉; 叶琴; 胡军; 童金南; 田力

doi:10.3799/dqkx.2021.212

Volume 48 Issue 10

Oct. 2023

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An Zhihui, Ye Qin, Hu Jun, Tong Jinnan, Tian Li, 2023. Stratigraphic Position of Cryogenian Songluo Biota in Shennongjia Area. Earth Science, 48(10): 3799-3811. doi: 10.3799/dqkx.2021.212

Citation:

An Zhihui, Ye Qin, Hu Jun, Tong Jinnan, Tian Li, 2023. Stratigraphic Position of Cryogenian Songluo Biota in Shennongjia Area. Earth Science, 48(10): 3799-3811. doi: 10.3799/dqkx.2021.212

An Zhihui, Ye Qin, Hu Jun, Tong Jinnan, Tian Li, 2023. Stratigraphic Position of Cryogenian Songluo Biota in Shennongjia Area. Earth Science, 48(10): 3799-3811. doi: 10.3799/dqkx.2021.212

Citation:

An Zhihui, Ye Qin, Hu Jun, Tong Jinnan, Tian Li, 2023. Stratigraphic Position of Cryogenian Songluo Biota in Shennongjia Area. Earth Science, 48(10): 3799-3811. doi: 10.3799/dqkx.2021.212

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Stratigraphic Position of Cryogenian Songluo Biota in Shennongjia Area

doi: 10.3799/dqkx.2021.212

An Zhihui^{1, 2, 4
,
,},
Ye Qin^{3
,
,},
Hu Jun⁴,
Tong Jinnan^{3, 4},
Tian Li⁴

1.
Hubei Key Laboratory of Paleontology and Geological Environment Evolution, Wuhan 430205, China
2.
Wuhan Center of China Geological Survey, Wuhan 430205, China
3.
School of Earth Sciences, China University of Geosciences, Wuhan 430074, China
4.
State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan 430078, China

Received Date: 2021-09-24
Available Online: 2023-10-31
Publish Date: 2023-10-25

Abstract

Abstract

Macrofossils in Late Neoproterozoic "Snowball Earth" are significant to the coevolution of early life and environment. Songluo biota of Nantuo Formation in Shennongjia area is the unique macroalgae record during the Cryogenian "Snowball Earth". However, because of lacking precise dating data, the stratigraphic position of fossil-bearing shale is controversial. One viewpoint correlates to Nantuo Formation, and the other correlates to Datangpo Formation. Stratigraphic correlation of Songluo biota is in need of restudy. The stratigraphic position and spatial distribution of Songluo biota were investigated under numerous field work. Three normal faults recorded in the Songluo Section along the roadside, leading to recurring problems for some layers(e.g. layers 9-11). Totally, 24 layers have been divided in the Songluo Section, of which the Nantuo Formation contains layers 1-19 and the Doushantuo Formation covers layers 20-24. Based on multiple black shales documented in Nantuo Formation, black shales sandwiched in similar calcareous diamictite, the fossil assemblages changed in different shales, the Datangpo Formation only recorded in western Shennongjia area, and extremely low concentration of Mn in black shales, the Songluo biota and hence the fossiliferous black shale at Songluo Section is part of the Nantuo Formation rather than the Datangpo Formation.
- Cryogenian,
- Nantuo Formation,
- Songluo biota,
- macroalgae,
- Shennongjia area,
- biostratigraphy,
- environmental geology

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References(31)

References

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Stratigraphic Position of Cryogenian Songluo Biota in Shennongjia Area

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