Biostromal unit from the Middle Devonian Jinbaoshi Formation, Sichuan, Southwest China: Implications for ecological structure of coeval reef communities
This study provides a comprehensive palaeontological and palaeoecological analysis of a middle Givetian (Middle Devonian) coral-stromatoporoid biostromal unit from the upper member of the Jinbaoshi Formation, northern Sichuan Province, Southwest China. The biostromal unit is 17.7 m of medium-to thic...
Published in: | Palaeogeography, Palaeoclimatology, Palaeoecology |
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Format: | Report |
Language: | English |
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2022
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Online Access: | http://ir.nigpas.ac.cn/handle/332004/41403 http://ir.nigpas.ac.cn/handle/332004/41404 https://doi.org/10.1016/j.palaeo.2022.111272 |
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ftchinacscnigpas:oai:ir.nigpas.ac.cn:332004/41404 2023-05-15T17:09:26+02:00 Biostromal unit from the Middle Devonian Jinbaoshi Formation, Sichuan, Southwest China: Implications for ecological structure of coeval reef communities Huang, Jiayuan(黄家园) Li, Yue(李越) Kershaw, Stephen Guo, Wen(郭文) Liang, Kun(梁坤) Qie, Wenkun(郄文坤) 2022-12-15 http://ir.nigpas.ac.cn/handle/332004/41403 http://ir.nigpas.ac.cn/handle/332004/41404 https://doi.org/10.1016/j.palaeo.2022.111272 英语 eng ELSEVIER PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY http://ir.nigpas.ac.cn/handle/332004/41403 http://ir.nigpas.ac.cn/handle/332004/41404 doi:10.1016/j.palaeo.2022.111272 Coral-stromatoporoid biostromal unit Ecological unit Palaeoenvironment Givetian Longmenshan area STROMATOPOROID PALEOECOLOGY MAGNETIC-SUSCEPTIBILITY NORTHWEST-TERRITORIES MACKENZIE BASIN TROIS-FONTAINES CARBONATE SEDIMENTOLOGY PLATFORM SUCCESSION BELGIUM Physical Geography Geology Paleontology Geography Physical Geosciences Multidisciplinary 期刊论文 2022 ftchinacscnigpas https://doi.org/10.1016/j.palaeo.2022.111272 2022-12-16T01:13:24Z This study provides a comprehensive palaeontological and palaeoecological analysis of a middle Givetian (Middle Devonian) coral-stromatoporoid biostromal unit from the upper member of the Jinbaoshi Formation, northern Sichuan Province, Southwest China. The biostromal unit is 17.7 m of medium-to thick-bedded lime-stones, and lacks observable morphological relief in the field. Diverse shallow marine benthic fossils are common elements of the biostromal unit encompassing stromatoporoids (7 genera), tabulate corals (4 genera), brachio-pods (2 genera), plus unidentified rugose corals, chaetetids, bryozoans, tubeworms, ostracods, gastropods, cri-noids and calcimicrobes. In terms of the biotic composition and biostrome-building contributors, three ecological units are recognized: Alveolites-Clathrocoilona community (EU 1), Salairella-Pseudotrupetostroma community (EU 2) and Scoliopora-Idiostroma community (EU 3). High fragmentation of bioclasts partially with micritic envelopes in wackestone, packstone to grainstone matrix and the dominance of low-profile stromatoporoids indicate deposition in shallow water conditions with episodic high sedimentation rate and frequent turbulent periods. Muddy silt-to sandstone facies overlie the biostromal unit, and are interpreted to represent a shallowing-up sequence, together with terrigenous input, thus triggering termination of the biostromal unit. This biostromal unit is similar to the other early to middle Givetian reefs of South China, East Australia, West Europe, East Europe and North Africa in relation to their fossil composition and reef-building characteristics. The stability of the reef communities (i.e. no conspicuous extinction) and common occurrence of unusual reef structures (e.g. coverstone) are thus interpreted as significant biotic factors for the expansion of large-scale ecosystems during the Phaner-ozoic reef-building acme. Report Mackenzie Basin Northwest Territories Nanjing Institute of Geology and Palaeontology: NIGPAS OpenIR (Chinese Academy of Sciences) Northwest Territories Palaeogeography, Palaeoclimatology, Palaeoecology 608 111272 |
institution |
Open Polar |
collection |
Nanjing Institute of Geology and Palaeontology: NIGPAS OpenIR (Chinese Academy of Sciences) |
op_collection_id |
ftchinacscnigpas |
language |
English |
topic |
Coral-stromatoporoid biostromal unit Ecological unit Palaeoenvironment Givetian Longmenshan area STROMATOPOROID PALEOECOLOGY MAGNETIC-SUSCEPTIBILITY NORTHWEST-TERRITORIES MACKENZIE BASIN TROIS-FONTAINES CARBONATE SEDIMENTOLOGY PLATFORM SUCCESSION BELGIUM Physical Geography Geology Paleontology Geography Physical Geosciences Multidisciplinary |
spellingShingle |
Coral-stromatoporoid biostromal unit Ecological unit Palaeoenvironment Givetian Longmenshan area STROMATOPOROID PALEOECOLOGY MAGNETIC-SUSCEPTIBILITY NORTHWEST-TERRITORIES MACKENZIE BASIN TROIS-FONTAINES CARBONATE SEDIMENTOLOGY PLATFORM SUCCESSION BELGIUM Physical Geography Geology Paleontology Geography Physical Geosciences Multidisciplinary Huang, Jiayuan(黄家园) Li, Yue(李越) Kershaw, Stephen Guo, Wen(郭文) Liang, Kun(梁坤) Qie, Wenkun(郄文坤) Biostromal unit from the Middle Devonian Jinbaoshi Formation, Sichuan, Southwest China: Implications for ecological structure of coeval reef communities |
topic_facet |
Coral-stromatoporoid biostromal unit Ecological unit Palaeoenvironment Givetian Longmenshan area STROMATOPOROID PALEOECOLOGY MAGNETIC-SUSCEPTIBILITY NORTHWEST-TERRITORIES MACKENZIE BASIN TROIS-FONTAINES CARBONATE SEDIMENTOLOGY PLATFORM SUCCESSION BELGIUM Physical Geography Geology Paleontology Geography Physical Geosciences Multidisciplinary |
description |
This study provides a comprehensive palaeontological and palaeoecological analysis of a middle Givetian (Middle Devonian) coral-stromatoporoid biostromal unit from the upper member of the Jinbaoshi Formation, northern Sichuan Province, Southwest China. The biostromal unit is 17.7 m of medium-to thick-bedded lime-stones, and lacks observable morphological relief in the field. Diverse shallow marine benthic fossils are common elements of the biostromal unit encompassing stromatoporoids (7 genera), tabulate corals (4 genera), brachio-pods (2 genera), plus unidentified rugose corals, chaetetids, bryozoans, tubeworms, ostracods, gastropods, cri-noids and calcimicrobes. In terms of the biotic composition and biostrome-building contributors, three ecological units are recognized: Alveolites-Clathrocoilona community (EU 1), Salairella-Pseudotrupetostroma community (EU 2) and Scoliopora-Idiostroma community (EU 3). High fragmentation of bioclasts partially with micritic envelopes in wackestone, packstone to grainstone matrix and the dominance of low-profile stromatoporoids indicate deposition in shallow water conditions with episodic high sedimentation rate and frequent turbulent periods. Muddy silt-to sandstone facies overlie the biostromal unit, and are interpreted to represent a shallowing-up sequence, together with terrigenous input, thus triggering termination of the biostromal unit. This biostromal unit is similar to the other early to middle Givetian reefs of South China, East Australia, West Europe, East Europe and North Africa in relation to their fossil composition and reef-building characteristics. The stability of the reef communities (i.e. no conspicuous extinction) and common occurrence of unusual reef structures (e.g. coverstone) are thus interpreted as significant biotic factors for the expansion of large-scale ecosystems during the Phaner-ozoic reef-building acme. |
format |
Report |
author |
Huang, Jiayuan(黄家园) Li, Yue(李越) Kershaw, Stephen Guo, Wen(郭文) Liang, Kun(梁坤) Qie, Wenkun(郄文坤) |
author_facet |
Huang, Jiayuan(黄家园) Li, Yue(李越) Kershaw, Stephen Guo, Wen(郭文) Liang, Kun(梁坤) Qie, Wenkun(郄文坤) |
author_sort |
Huang, Jiayuan(黄家园) |
title |
Biostromal unit from the Middle Devonian Jinbaoshi Formation, Sichuan, Southwest China: Implications for ecological structure of coeval reef communities |
title_short |
Biostromal unit from the Middle Devonian Jinbaoshi Formation, Sichuan, Southwest China: Implications for ecological structure of coeval reef communities |
title_full |
Biostromal unit from the Middle Devonian Jinbaoshi Formation, Sichuan, Southwest China: Implications for ecological structure of coeval reef communities |
title_fullStr |
Biostromal unit from the Middle Devonian Jinbaoshi Formation, Sichuan, Southwest China: Implications for ecological structure of coeval reef communities |
title_full_unstemmed |
Biostromal unit from the Middle Devonian Jinbaoshi Formation, Sichuan, Southwest China: Implications for ecological structure of coeval reef communities |
title_sort |
biostromal unit from the middle devonian jinbaoshi formation, sichuan, southwest china: implications for ecological structure of coeval reef communities |
publisher |
ELSEVIER |
publishDate |
2022 |
url |
http://ir.nigpas.ac.cn/handle/332004/41403 http://ir.nigpas.ac.cn/handle/332004/41404 https://doi.org/10.1016/j.palaeo.2022.111272 |
geographic |
Northwest Territories |
geographic_facet |
Northwest Territories |
genre |
Mackenzie Basin Northwest Territories |
genre_facet |
Mackenzie Basin Northwest Territories |
op_relation |
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY http://ir.nigpas.ac.cn/handle/332004/41403 http://ir.nigpas.ac.cn/handle/332004/41404 doi:10.1016/j.palaeo.2022.111272 |
op_doi |
https://doi.org/10.1016/j.palaeo.2022.111272 |
container_title |
Palaeogeography, Palaeoclimatology, Palaeoecology |
container_volume |
608 |
container_start_page |
111272 |
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1766065534249467904 |