神农架陡山沱组沉积特征及其对“鄂西海槽”的启示

谷昊东; 胡军; 安志辉; 叶琴; 孙思远; 张志麒; 李超

doi:10.3799/dqkx.2020.318

Volume 46 Issue 8

Aug. 2021

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Article Navigation > Earth Science > 2021 > 46(8): 2958-2972

Gu Haodong, Hu Jun, An Zhihui, Ye Qin, Sun Siyuan, Zhang Zhiqi, Li Chao, 2021. Sedimentary Characteristics of Doushantuo Formation in Shennongjia Area: Implications for 'West Hubei Trough'. Earth Science, 46(8): 2958-2972. doi: 10.3799/dqkx.2020.318

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Gu Haodong, Hu Jun, An Zhihui, Ye Qin, Sun Siyuan, Zhang Zhiqi, Li Chao, 2021. Sedimentary Characteristics of Doushantuo Formation in Shennongjia Area: Implications for "West Hubei Trough". Earth Science, 46(8): 2958-2972. doi: 10.3799/dqkx.2020.318

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Sedimentary Characteristics of Doushantuo Formation in Shennongjia Area: Implications for "West Hubei Trough"

doi: 10.3799/dqkx.2020.318

Gu Haodong^{1
,
,},
Hu Jun^{1
,
,},
An Zhihui²,
Ye Qin³,
Sun Siyuan¹,
Zhang Zhiqi⁴,
Li Chao^{1
,
,}

1.
State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan 430074, China
2.
Wuhan Center of China Geological Survey, Wuhan 430205, China
3.
School of Earth Sciences, China University of Geosciences, Wuhan 430074, China
4.
Shennongjia National Park Administration, Shennongjia 442400, China

Received Date: 2020-10-08
Available Online: 2021-09-14
Publish Date: 2021-08-15

Abstract

Abstract

Paleogeographic reconstruction of the Ediacaran Doushantuo Formation in South China is controversial, and one of the key problems is the existence and distribution of the "West Hubei Trough". In this paper it presents stratigraphic and sedimentological evidence of the Doushantuo Formation from the Shennongjia area (Hubei Province) for the existence of "West Hubei Trough" and its sedimentary facies in Shennongjia area. Lithological features of the Doushantuo Formation in the eastern Shennongjia area are similar to those in the Zhangcunping area, northern Huangling anticline near Three Gorges. Sedimentary structures such as "bird eyes" and peloids indicate that the Doushantuo Formation in the eastern Shennongjia area was deposited in a shallow platform environment. The Doushantuo Formation in the western Shennongjia area is mainly composed of interbedded sandstone, siltstone and mudstone. In addition, sedimentary structures, such as incomplete Bouma sequences containing normal graded bedding and parallel bedding, indicate a slope or relatively deeper water environment of the western Shennongjia area. In combination with previous studies, our results indicate that the boundary between the "West Hubei Trough" and the "Central Hubei Platform" extends from the middle Shennongjia area to the northwest of Huangling anticline area as well as to its southeast. The eastern Shennongjia and northeast Huangling anticline were both located in platform facies, whereas the western Shennongjia and southwest Huangling anticline were located in deeper water facies of the "West Hubei Trough".
- Shennongjia,
- Doushantuo Formation,
- Ediacaran,
- paleogeographic reconstruction,
- "West Hubei Trough",
- sedimentology

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References(54)

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Sedimentary Characteristics of Doushantuo Formation in Shennongjia Area: Implications for "West Hubei Trough"

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