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Palaeontological and sedimentological characteristics of the Changhsingian (Late Permian) platform-margin sponge reef and intraplatform skeletal mound in NE Sichuan Basin, South China: their palaeoenvironmental implications
Tian, Xuesong (田雪松)1; Wang, Yue (王玥)1,2,3
2021-03-01
Source PublicationCARBONATES AND EVAPORITES
ISSN0891-2556
Volume36Issue:1Pages:23
Abstract

Well-preserved fossil reef/mound-building communities and shallow microfacies have been recovered from Changhsingian platform-margin sponge reef at the Panlongdong Section and intraplatform sponge skeletal mound at the Yanggudong Section in NE Sichuan Basin, South China. The present contribution focuses on the palaeoenvironmental implication of the differentiated development processes on the platform-margin reef and intraplatform skeletal mound based on the palaeontology and sedimentology. Precise field assessments and macroscopic/microscopic qualitative observations led to the identification of five reef/mound-building community and 14 reef/mound-related microfacies in the 2 sections of Changxing Formation. In the Panlongdong platform-margin sponge reef, reef-building communities are recognized into Amblysiphonella Community, Preperonidella-Amblysiphonella Community, and Preperonidella-Sollasia Community in ascending order. The reef-related microfacies are mainly classified into calcisphere-pelletoid wackestone to packstone, crinoidal wackestone to packstone of shallow water bank environment, hypercalcified sponge bafflestone, calcareous algae-hypercalcified sponge binding framestone, hypercalcifed sponge-calcareous algae bindstone, and calcareous algae-hypercalcifed sponge rudstone of reef environment, and benthic foraminifera-calcareous algae wackestone to packstone of shallower water lagoon environment. Two mound-building communities can only be found in the Yanggudong intraplatform skeletal mound, including Preperonidella-Intrasporeocoelia Community of lower part and Preperonidella-Sollasia Community of upper part. The mound-related microfacies include calcisphere-calcareous algae wackestone to packstone, crinoidal wackestone to packstone and crinoidal packstone to grainstone of shallow water bank environment, hypercalcified sponge bafflestone and cyanobacteria-hypercalcified sponge binding bafflestone of skeletal mound environment, benthic foraminifera-calcareous algae packstone grainstone of shallower water bank environment and benthic foraminifera-calcareous algae wackestone to packstone of shallower water lagoon environment. These palaeontological and sedimentological analysis results have facilitated the classification of sponge reef and skeletal mound sections corresponding to a solitary shallow benthic zone into multiple microfacies attributed to variable environmental depositional conditions. The differentiated evolutional process of multiple reef/mound-building stages at the Panlongdong and Yanggudong sections clearly demonstrate a general shallowing-upward trend from an inner shelf setting to a supratidal and low energy lagoon environment.

KeywordPlatform− margin sponge reef Intraplatform sponge skeletal mound Changhsingian Sichuan basin Reef mound-building community Microfacies
DOI10.1007/s13146-020-00667-5
Indexed BySCI
Language英语
WOS KeywordYUANBA GAS-FIELD ; CHANGXING FORMATION ; FEIXIANGUAN FORMATION ; PANLONGDONG SECTION ; DOLOMITIZATION ; RESERVOIR ; DISCOVERY ; DOLOMITES ; XUANHAN ; ORIGIN
Funding ProjectStrategic Priority Research Program of Chinese Academy of Sciences[XDB26000000] ; National Natural Science Foundation of China[41830323] ; Geological Investigation Project of the China Geological Survey[DD20190009] ; State Key Laboratory of Palaeobiology and Stratigraphy (Nanjing Institute of Geology and Palaeontology, CAS)[193127] ; lateral project of SINOPEC Zhongyuan Oilfield[31300027-16-ZC0607-0007]
WOS Research AreaGeology
WOS SubjectGeology
WOS IDWOS:000593072700001
Funding OrganizationStrategic Priority Research Program of Chinese Academy of Sciences ; National Natural Science Foundation of China ; Geological Investigation Project of the China Geological Survey ; State Key Laboratory of Palaeobiology and Stratigraphy (Nanjing Institute of Geology and Palaeontology, CAS) ; lateral project of SINOPEC Zhongyuan Oilfield
PublisherSPRINGER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.nigpas.ac.cn/handle/332004/32853
Collection中国科学院南京地质古生物研究所
Corresponding AuthorTian, Xuesong (田雪松); Wang, Yue (王玥)
Affiliation1.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, Nanjing 210008, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Ctr Excellence Life & Palaeoenvironm, Nanjing, Peoples R China
First Author AffilicationNanjing Institute of Geology and Palaeonotology,CAS
Corresponding Author AffilicationNanjing Institute of Geology and Palaeonotology,CAS
Recommended Citation
GB/T 7714
Tian, Xuesong ,Wang, Yue . Palaeontological and sedimentological characteristics of the Changhsingian (Late Permian) platform-margin sponge reef and intraplatform skeletal mound in NE Sichuan Basin, South China: their palaeoenvironmental implications[J]. CARBONATES AND EVAPORITES,2021,36(1):23.
APA Tian, Xuesong ,&Wang, Yue .(2021).Palaeontological and sedimentological characteristics of the Changhsingian (Late Permian) platform-margin sponge reef and intraplatform skeletal mound in NE Sichuan Basin, South China: their palaeoenvironmental implications.CARBONATES AND EVAPORITES,36(1),23.
MLA Tian, Xuesong ,et al."Palaeontological and sedimentological characteristics of the Changhsingian (Late Permian) platform-margin sponge reef and intraplatform skeletal mound in NE Sichuan Basin, South China: their palaeoenvironmental implications".CARBONATES AND EVAPORITES 36.1(2021):23.
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