DOI: 10.1016/j.palaeo.2017.08.015
论文题名: Uppermost Permian to Lower Triassic conodont successions from the Enshi area, western Hubei Province, South China
作者: Lyu Z. ; Orchard M.J. ; Chen Z.-Q. ; Wang X. ; Zhao L. ; Han C.
刊名: Palaeogeography, Palaeoclimatology, Palaeoecology
ISSN: 0031-0182
出版年: 2017
语种: 英语
英文关键词: Changhsingian
; Induan-Olenekian boundary
; Permian-Triassic boundary
; Yangtze region
英文摘要: We present recent study results of the Lower Triassic conodont succession from the Ganxi and Jianshi areas of Enshi city, western Hubei Province, South China, which were situated on a carbonate ramp at the northeastern margin of the Upper Yangtze Platform. Therein, the uppermost Permian to Lower Triassic succession is well exposed and yielded abundant conodonts. A total of nine conodont zones are differentiated: (1) Clarkina yini Zone, (2) Clarkina meishanensis Zone, (3) Hindeodus changxingensis Zone, (4) Hindeodus parvus Zone, (5) Hindeodus postparvus Zone, (6) Clarkina planata Zone, (7) Neoclarkina aff. discreta Zone, (8) Neospathodus dieneri Zone, and (9) Novispathodus waageni Zone. The Ns. dieneri M1, Ns. dieneri M2, and Ns. dieneri M3 Subzones have also been distinguished within the Ns. dieneri Zone, and the Nv. waageni eowaageni and Nv. waageni waageni Subzones are recognizable within the Nv. waageni Zone in Jianshi. Most of the zones occur in succession, but the C. planata Zone is a local ecozone reflecting deeper water biofacies during H. postparvus Zone time. In the Jianshi section, the Permian-Triassic boundary is placed at Bed 136-2 based on the appearance of Hindeodus parvus immediately above the disappearance of Changhsingian taxa, while the Induan-Olenekian boundary (IOB) is drawn at Bed 225 + 40. cm based on the first appearance of Nv. waageni eowaageni within the upper range of the Ns. dieneri Zone indices. The Enshi conodont zones overall correlate well with those recognized elsewhere in South China and worldwide. © 2017.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/68149
Appears in Collections: 过去全球变化的重建
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作者单位: State Key Laboratory of Geological Processes and Mineral Resources and School of Earth Science, China University of Geosciences, Wuhan 430074, China; State Key Laboratory of Biogeology and Environmental Geology and School of Earth Science, China University of Geosciences, Wuhan 430074, China; Natural Resources Canada, Geological Survey of Canada, Vancouver, BC V6E4S6, Canada
Recommended Citation:
Lyu Z.,Orchard M.J.,Chen Z.-Q.,et al. Uppermost Permian to Lower Triassic conodont successions from the Enshi area, western Hubei Province, South China[J]. Palaeogeography, Palaeoclimatology, Palaeoecology,2017-01-01