DOI: 10.1016/j.palaeo.2017.04.026
论文题名: Upper Ordovician conodont biostratigraphy and biofacies from the Sigang section, Neixiang, Henan, central China
作者: Jing X. ; Stouge S. ; Ding L. ; Wang X. ; Zhou H.
刊名: Palaeogeography, Palaeoclimatology, Palaeoecology
ISSN: 0031-0182
出版年: 2017
卷: 480 起始页码: 18
结束页码: 32
语种: 英语
英文关键词: Katian
; Midcontinent affinity
; Palaeoecology
; Sea-level changes
; Shiyanhe Formation
英文摘要: The 186-m-thick Shiyanhe Formation exposed at the Sigang section, Neixiang area, Henan Province, central China has been investigated for conodonts. The collected 33 samples yielded 8858 conodont specimens. The conodonts are referred to 15 genera and 34 species, but four species cannot be positively identified and one taxon is kept in open nomenclature. The Oulodus ulrichi, the Oulodus robustus, the Aphelognathus grandis and the Aphelognathus divergens conodont biozones are introduced and the conodont fauna and biozones of the Shiyanhe Formation are referred to the Katian Stage (Stage slices Ka2–Ka4) of the Upper Ordovician. The presence of biostratigraphically important species of the genera Aphelognathus, Oulodus and Yaoxianognathus allows for the recognition of the previously defined local conodont biozones that were established from the studied section. Regionally, the Shiyanhe Formation fauna is relatively similar to the contemporaneous faunas from the Tarim terrane in western China and from the southwestern margin of the North China Platform. However, the faunal composition also shows a close affinity to the North American Midcontinent Province and correlation to North America is clear. The conodont fauna is dominated by the species of Aphelognathus, Belodina, Drepanoistodus, Oulodus, Panderodus, Phragmodus, “Plectodina” and Yaoxianognathus. The Aphelognathus–Oulodus biofacies, the “Plectodina” biofacies, the Panderodus biofacies, the Drepanoistodus biofacies and the Phragmodus biofacies have been established using multivariate statistical techniques on the conodont assemblage. As their turnovers were related to sea-level changes, the conodont biofacies are used to demonstrate the transgressive-regressive pattern in the studied section. © 2017 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/67803
Appears in Collections: 过去全球变化的重建
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作者单位: State Key Laboratory of Geobiology and Environmental Geology, China University of Geosciences, Beijing, China; School of Earth Sciences and Resources, China University of Geosciences, Beijing, China; Natural History Museum of Denmark, Geological Museum, Earth and Planetary System Science Section, University of Copenhagen, Øster Voldgade 5-7, Copenhagen K, Denmark
Recommended Citation:
Jing X.,Stouge S.,Ding L.,et al. Upper Ordovician conodont biostratigraphy and biofacies from the Sigang section, Neixiang, Henan, central China[J]. Palaeogeography, Palaeoclimatology, Palaeoecology,2017-01-01,480