Properties of Conglomerates from the Middle Ordovician Dongchong Formation and Its Response to the Yunan Orogeny in the Yunkai Area, South China
The strata in the Shita Mountain, Yunkai region, are predominantly composed of clastic rocks with intercalated limestones. However, the precise stratigraphic age remains uncertain due to the scarcity of fossils. Previously, conglomerate layers in this region were considered indicative of the Yunan O...
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ftdoajarticles:oai:doaj.org/article:9aebae23ced24b698c62a5922493ed93 2023-09-26T15:10:59+02:00 Properties of Conglomerates from the Middle Ordovician Dongchong Formation and Its Response to the Yunan Orogeny in the Yunkai Area, South China Zhihong Wang Zhihong Li Zhijun Niu Chu’an Li Hao Chen Xiaoming Lin Kun Hu Huazhou Yao 2023-07-01T00:00:00Z https://doi.org/10.3390/min13080998 https://doaj.org/article/9aebae23ced24b698c62a5922493ed93 EN eng MDPI AG https://www.mdpi.com/2075-163X/13/8/998 https://doaj.org/toc/2075-163X doi:10.3390/min13080998 2075-163X https://doaj.org/article/9aebae23ced24b698c62a5922493ed93 Minerals, Vol 13, Iss 998, p 998 (2023) Yunan orogeny Yunkai area Ordovician South China conglomerates detrital zircons Mineralogy QE351-399.2 article 2023 ftdoajarticles https://doi.org/10.3390/min13080998 2023-08-27T00:35:08Z The strata in the Shita Mountain, Yunkai region, are predominantly composed of clastic rocks with intercalated limestones. However, the precise stratigraphic age remains uncertain due to the scarcity of fossils. Previously, conglomerate layers in this region were considered indicative of the Yunan Orogeny during the Cambrian–Ordovician transition. However, through the identification of 12 lithofacies types and 5 lithofacies combinations in the conglomerate layers of the Shita Mountain section, it has been confirmed that these layers represent a fan delta depositional environment characterized by debris flow, traction flow, torrent, and rock flow. Based on the presence of brachiopod fossils dating to the Early–Middle Ordovician, we propose a novel two-episode model for the Yunan Orogeny. The first episode corresponds to submarine fan deposition, while the second episode involves tectonic uplift and a short-term sedimentary hiatus. Further analysis of the detrital zircon provenance reveals a strong affinity among the Yunkai area, India, Antarctica, the Lhasa, the Himalayas, Southern Qiangtang, and Western Australia during the Early–Middle Ordovician transition under the Gondwana assemblage background. Article in Journal/Newspaper Antarc* Antarctica Directory of Open Access Journals: DOAJ Articles Minerals 13 8 998 |
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Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Yunan orogeny Yunkai area Ordovician South China conglomerates detrital zircons Mineralogy QE351-399.2 |
spellingShingle |
Yunan orogeny Yunkai area Ordovician South China conglomerates detrital zircons Mineralogy QE351-399.2 Zhihong Wang Zhihong Li Zhijun Niu Chu’an Li Hao Chen Xiaoming Lin Kun Hu Huazhou Yao Properties of Conglomerates from the Middle Ordovician Dongchong Formation and Its Response to the Yunan Orogeny in the Yunkai Area, South China |
topic_facet |
Yunan orogeny Yunkai area Ordovician South China conglomerates detrital zircons Mineralogy QE351-399.2 |
description |
The strata in the Shita Mountain, Yunkai region, are predominantly composed of clastic rocks with intercalated limestones. However, the precise stratigraphic age remains uncertain due to the scarcity of fossils. Previously, conglomerate layers in this region were considered indicative of the Yunan Orogeny during the Cambrian–Ordovician transition. However, through the identification of 12 lithofacies types and 5 lithofacies combinations in the conglomerate layers of the Shita Mountain section, it has been confirmed that these layers represent a fan delta depositional environment characterized by debris flow, traction flow, torrent, and rock flow. Based on the presence of brachiopod fossils dating to the Early–Middle Ordovician, we propose a novel two-episode model for the Yunan Orogeny. The first episode corresponds to submarine fan deposition, while the second episode involves tectonic uplift and a short-term sedimentary hiatus. Further analysis of the detrital zircon provenance reveals a strong affinity among the Yunkai area, India, Antarctica, the Lhasa, the Himalayas, Southern Qiangtang, and Western Australia during the Early–Middle Ordovician transition under the Gondwana assemblage background. |
format |
Article in Journal/Newspaper |
author |
Zhihong Wang Zhihong Li Zhijun Niu Chu’an Li Hao Chen Xiaoming Lin Kun Hu Huazhou Yao |
author_facet |
Zhihong Wang Zhihong Li Zhijun Niu Chu’an Li Hao Chen Xiaoming Lin Kun Hu Huazhou Yao |
author_sort |
Zhihong Wang |
title |
Properties of Conglomerates from the Middle Ordovician Dongchong Formation and Its Response to the Yunan Orogeny in the Yunkai Area, South China |
title_short |
Properties of Conglomerates from the Middle Ordovician Dongchong Formation and Its Response to the Yunan Orogeny in the Yunkai Area, South China |
title_full |
Properties of Conglomerates from the Middle Ordovician Dongchong Formation and Its Response to the Yunan Orogeny in the Yunkai Area, South China |
title_fullStr |
Properties of Conglomerates from the Middle Ordovician Dongchong Formation and Its Response to the Yunan Orogeny in the Yunkai Area, South China |
title_full_unstemmed |
Properties of Conglomerates from the Middle Ordovician Dongchong Formation and Its Response to the Yunan Orogeny in the Yunkai Area, South China |
title_sort |
properties of conglomerates from the middle ordovician dongchong formation and its response to the yunan orogeny in the yunkai area, south china |
publisher |
MDPI AG |
publishDate |
2023 |
url |
https://doi.org/10.3390/min13080998 https://doaj.org/article/9aebae23ced24b698c62a5922493ed93 |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_source |
Minerals, Vol 13, Iss 998, p 998 (2023) |
op_relation |
https://www.mdpi.com/2075-163X/13/8/998 https://doaj.org/toc/2075-163X doi:10.3390/min13080998 2075-163X https://doaj.org/article/9aebae23ced24b698c62a5922493ed93 |
op_doi |
https://doi.org/10.3390/min13080998 |
container_title |
Minerals |
container_volume |
13 |
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8 |
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998 |
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1778150767259025408 |