DOI: 10.1016/j.palaeo.2013.04.015
论文题名: Testing the terrestrial δ13C Cretaceous-Paleogene (K-Pg) chemostratigraphic marker
作者: Grandpre R. ; Schauer A. ; Samek K. ; Veeger A. ; Ward P. ; Fastovsky D.
刊名: Palaeogeography, Palaeoclimatology, Palaeoecology
ISSN: 0031-0182
出版年: 2013
卷: 381-382 起始页码: 67
结束页码: 75
语种: 英语
英文关键词: δ13C
; Chemostratigraphy
; Cretaceous-Paleogene
; North America
; Stable isotopes
; Terrestrial
英文摘要: Multiple >1‰ δ13C isotopic excursions measured across the Cretaceous-Paleogene (K-Pg) boundary in an iridium-bearing stratigraphic section from Mud Buttes, North Dakota, USA, fail to demonstrate an unambiguous chemostratigraphic signal for the extinction. Results of two-sample Kolmogorov-Smirnov tests using δ13C records for the Mud Buttes section as well as five other published K-Pg sections from Montana, North Dakota, Wyoming, and Canada - all of which report a -1.0‰ to -2.8‰ chemostratigraphic marker at or just above the extinction - demonstrate that it may not be possible to distinguish a statistically meaningful isotopic shift to lower δ13C values at the boundary in the context of background variations. Carbon isotopes as terrestrial chemostratigraphic markers of the K-Pg extinction boundary are thus of limited utility. © 2013 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/69722
Appears in Collections: 过去全球变化的重建
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作者单位: Department of Geosciences, University of Rhode Island, Kingston, RI 02881-2019, United States; Earth and Space Sciences, University of Washington, Seattle, WA 98195-1310, United States; US Army Corps of Engineers, Institute for Water Resources, 7701 Telegraph Rd., Casey Building, Alexandria, VA 22315, United States
Recommended Citation:
Grandpre R.,Schauer A.,Samek K.,et al. Testing the terrestrial δ13C Cretaceous-Paleogene (K-Pg) chemostratigraphic marker[J]. Palaeogeography, Palaeoclimatology, Palaeoecology,2013-01-01,381-382