DOI: 10.1016/j.palaeo.2016.10.015
论文题名: Geochronologic age constraints on the Middle Devonian Hujiersite flora of Xinjiang, NW China
作者: Zheng D. ; Xu H. ; Wang J. ; Feng C. ; Zhang H. ; Chang S.-C.
刊名: Palaeogeography, Palaeoclimatology, Palaeoecology
ISSN: 0031-0182
出版年: 2016
卷: 463 起始页码: 230
结束页码: 237
语种: 英语
英文关键词: Devonian
; Geochronology
; Hujiersite Formation
; Land plants
; Xinjiang
; Zircon
英文摘要: The Hujiersite Formation of West Junggar, Xinjiang contain fossil plants that represent significant examples of Middle Devonian flora in North China. However, previous radio-isotopic age constraint for this fossil-rich formation is absent. The best-studied section of the Hujiersite flora occurs at a locality referred to as 251 Hill, which exposes numerous examples of fossil plants and information on depositional environment. In this study, we investigate the geological background of the 251 Hill section and collect two tuffaceous sandstone beds from a normal fault near the classic fossil outcrop. U-Pb ICP-MS analysis of detrital zircons from these samples gave a maximum depositional age of 385 Ma (Givetian stage) for the hanging wall and 380 Ma (early Frasnian stage) for the footwall of the upper Hujiersite Formation. This study thus reports a novel Givetian–early Frasnian age constraint for Hujiersite flora. This geochronologic constraint is consistent with previous age interpretations derived from biostratigraphic correlations. © 2016 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/68184
Appears in Collections: 过去全球变化的重建
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作者单位: Department of Earth Sciences, The University of Hong KongHong Kong Special Administrative Region, China; State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, 39 East Beijing Road, Nanjing, China
Recommended Citation:
Zheng D.,Xu H.,Wang J.,et al. Geochronologic age constraints on the Middle Devonian Hujiersite flora of Xinjiang, NW China[J]. Palaeogeography, Palaeoclimatology, Palaeoecology,2016-01-01,463