DOI: 10.1016/j.epsl.2018.02.010
Scopus记录号: 2-s2.0-85042264507
论文题名: Cyclostratigraphic calibration of the Famennian stage (Late Devonian, Illinois Basin, USA)
作者: Pas D. ; Hinnov L. ; Day J.E.J. ; Kodama K. ; Sinnesael M. ; Liu W.
刊名: Earth and Planetary Science Letters
ISSN: 0012821X
出版年: 2018
卷: 488 起始页码: 102
结束页码: 114
语种: 英语
英文关键词: cyclostratigraphy
; deep-shelf record
; Devonian
; Illinois Basin
; magnetic susceptibility
Scopus关键词: Analytical geochemistry
; Biodiversity
; Calibration
; Climate change
; Magnetic susceptibility
; Magnetism
; Stratigraphy
; Temperature
; Astronomical time scale
; Climatic informations
; Cyclostratigraphy
; deep-shelf record
; Devonians
; Geochemical analysis
; Illinois
; Spectral techniques
; Uncertainty analysis
; age determination
; climate variation
; cyclostratigraphy
; Famennian
; magnetic susceptibility
; paleoclimate
; uncertainty analysis
; uranium-lead dating
; Illinois Basin
; United States
英文摘要: The Late Devonian biosphere was affected by two of the most severe biodiversity crises in Earth's history, the Kellwasser and Hangenberg events near the Frasnian–Famennian (F–F) and the Devonian–Carboniferous (D–C) boundaries, respectively. Current hypotheses for the causes of the Late Devonian extinctions are focused on climate changes and associated ocean anoxia. Testing these hypotheses has been impeded by a lack of sufficient temporal resolution in paleobiological, tectonic and climate proxy records. While there have been recent advances in astronomical calibration that have improved the accuracy of the Frasnian time scale and part of the Famennian, the time duration of the entire Famennian Stage remains poorly constrained. During the Late Devonian, a complete Late Frasnian–Early Carboniferous succession of deep-shelf deposits accumulated in the epieric sea in Illinois Basin of the central North-American mid-continent. A record of this sequence is captured in three overlapping cores (H-30, Sullivan and H-32). The H-30 core section spans the F–F boundary; the Sullivan section spans almost all of the Famennian and the H-32 section sampled spans the interval of the Upper Famennian and the D–C boundary. To have the best chance of capturing Milankovitch cycles, 2000 rock samples were collected at minimum 5-cm-interval across the entire sequence. Magnetic susceptibility (MS) was measured on each sample and the preservation of climatic information into the MS signal was verified through geochemical analyses and low-temperature magnetic susceptibility acquisition. To estimate the duration of the Famennian Stage, we applied multiple spectral techniques and tuned the MS signal using the highly stable 405 kyr cycle for Sullivan and the obliquity cycle for the H-30 and H-32 cores. Based on the correlation between the cores we constructed a Famennian floating astronomical time scale, which indicates a duration of 13.5 ± 0.5 myr. An uncertainty of 0.5 myr was estimated for the uncertainties arising from the errors in the stratigraphic position of the F–F and D–C boundaries, and the 405 kyr cycle counting. Interpolated from the high-resolution U–Pb radiometric ages available for the Devonian–Carboniferous boundary we recalibrated the Frasnian–Famennian boundary numerical age to 372.4 ± 0.9 Ma. © 2018 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/109987
Appears in Collections: 影响、适应和脆弱性 气候变化事实与影响
There are no files associated with this item.
作者单位: Department of Atmospheric, Oceanic, and Earth Sciences, George Mason University, Fairfax, VA 22030, United States; Pétrologie sédimentaire, B20, Géologie, Université de Liège, Sart-Tilman, Liège, 4000, Belgium; Department of Geography-Geology & Environment, Illinois State University, Normal, IL 61790, United States; Department of Earth and Environmental Sciences, Lehigh University, Bethlehem, PA 18015, United States; AMGC, Vrije Universiteit Brussel, Pleinlaan 2, Brussels, 1050, Belgium; School of Ocean Sciences, China University of Geosciences, Beijing, 100083, China
Recommended Citation:
Pas D.,Hinnov L.,Day J.E.J.,et al. Cyclostratigraphic calibration of the Famennian stage (Late Devonian, Illinois Basin, USA)[J]. Earth and Planetary Science Letters,2018-01-01,488