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Microbialite concretions in a dolostone crust at the Permian-Triassic boundary of the Xishan section in Jiangsu Province, South China
Zheng, Quan-Feng; Cao, Chang-Qun; Wang, Yue; Zhang, Hua; Ding, Yi
2016-06-01
Source PublicationPALAEOWORLD
ISSN1871-174X
Volume25Issue:2Pages:188-198
AbstractCarbonate concretions with structures and fossil groups associated with microbialite developed in a dolostone crust at the Permian Triassic boundary of the Xishan section in Jiangsu Province, South China. These structures include clotted fabrics and laminated carbonate needles, as well as abundant carbonate crystal fans. Fossil groups associated with microbialite include microconchids, small gastropods, and small foraminifers These fabrics and fossils suggest that the concretions are carbonate microbialite blocks developed in the dolostone crust. On the basis of the analysis of the microfabrics and the fossil groups together with a comparison to modern analogues, we attribute the formation of the micritic patches in the microbialite concretions to the calcification of cyanobacterial mats via carbonate nanoparticles and we attribute the carbonate crystal fans to the direct recrystallization of micritic carbonates. The sparitic patches were interpreted as either the direct recrystallization of micritic carbonates or the precipitation of carbonate spars in the inter-/intra-spaces of metazoan shells together with the recrystallization of these shells. The similarities to modern stromatolites, both in morphology and in internal texture, suggest that the laminated carbonate needles are stromatolite laminae built by filamentous cyanobacteria. The preservation of these microbialite microfabrics indicates that early lithification by carbonate precipitation was widespread and intense following the end-Permian boundary events. The weak development of microbialites as small concretions may be attributed to the deeper water depth and the lower water energy in the Xishan area during the earliest Triassic. (C) 2015 Elsevier B.V. and Nanjing Institute of Geology and Palaeontology, CAS. All rights reserved.
KeywordMicrobialite concretions Permian-Triassic boundary Xishan section South China
DOI10.1016/j.palwor.2015.02.002
Language英语
WOS KeywordWESTERN UNITED-STATES ; SATONDA CRATER LAKE ; MASS EXTINCTION ; PALEOENVIRONMENTAL SIGNIFICANCE ; INCREASED ALKALINITY ; GEOLOGICAL RECORD ; OSTRACOD FAUNA ; FACIES ; BIOFILMS ; STROMATOLITES
WOS Research AreaPaleontology
WOS SubjectPaleontology
WOS IDWOS:000379733900005
PublisherELSEVIER SCIENCE BV
Citation statistics
Cited Times:5[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.nigpas.ac.cn/handle/332004/12400
Collection中国科学院南京地质古生物研究所
Corresponding AuthorZheng, Quan-Feng
AffiliationChinese Acad Sci, Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, Nanjing 210008, Jiangsu, 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
Zheng, Quan-Feng,Cao, Chang-Qun,Wang, Yue,et al. Microbialite concretions in a dolostone crust at the Permian-Triassic boundary of the Xishan section in Jiangsu Province, South China[J]. PALAEOWORLD,2016,25(2):188-198.
APA Zheng, Quan-Feng,Cao, Chang-Qun,Wang, Yue,Zhang, Hua,&Ding, Yi.(2016).Microbialite concretions in a dolostone crust at the Permian-Triassic boundary of the Xishan section in Jiangsu Province, South China.PALAEOWORLD,25(2),188-198.
MLA Zheng, Quan-Feng,et al."Microbialite concretions in a dolostone crust at the Permian-Triassic boundary of the Xishan section in Jiangsu Province, South China".PALAEOWORLD 25.2(2016):188-198.
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