DOI: 10.1016/j.gloplacha.2015.06.001
论文题名: Astrochronology of the Valanginian-Hauterivian stages (Early Cretaceous): Chronological relationships between the Paraná-Etendeka large igneous province and the Weissert and the Faraoni events
作者: Martinez M. ; Deconinck J.-F. ; Pellenard P. ; Riquier L. ; Company M. ; Reboulet S. ; Moiroud M.
刊名: Global and Planetary Change
ISSN: 0921-8181
出版年: 2015
卷: 131 起始页码: 158
结束页码: 173
语种: 英语
英文关键词: Astrochronology
; Faraoni Event
; Hauterivian
; Paraná-Etendeka large igneous province
; Valanginian
; Weissert Event
Scopus关键词: Isotopes
; Lead
; Astrochronology
; Faraoni Event
; Hauterivian
; Large igneous provinces
; Valanginian
; Weissert Event
; Carbon
; Albian
; Berriasian
; chronology
; Hauterivian
; large igneous province
; paleoceanography
; timescale
; Valanginian
; Brazil
; Etendeka
; Namibia
; Parana [Brazil]
英文摘要: The Geological Time Scale shows large uncertainties on durations and ages of Berriasian to Albian stages (Early Cretaceous), which impact climate and paleoceanographic reconstructions. Here, we provide a new astrochronology of the Hauterivian Stage anchored on (1) recent biostratigraphically well-constrained published radio-isotopic dates, and (2) a previously published astrochronology of the Valanginian Stage. A new duration of the Hauterivian Stage is assessed here at 5.93±0.41myr. The retained age model, anchored on a latest CA-ID-TIMS U-Pb age from a tuff level in the Hauterivian of the Neuquén Basin (Argentina), dates the base of the Valanginian Stage at -137.05±1.0Ma, the base of the Hauterivian Stage at -131.96±1.0Ma, and the top of the Hauterivian Stage at -126.02±1.0Ma. In addition, the onset of the mid-Valanginian Weissert Event is dated at -135.22±1.0Ma and the onset of the Faraoni Event at -126.73±1.0Ma. The duration of the mid-Valanginian carbon-isotope excursion, associated to the Weissert Event, is assessed at 5.85myr, with a rapid phase of increasing δ13C values (0.60myr), a phase of stable δ13C values (1.48myr), and smooth decrease in δ13C values (3.77myr). The calibration provided here highlights that the onset of the activity of the Paraná-Etendeka province and the start of the Weissert Event coincided, suggesting that the Paraná-Etendeka province may have played a major role on the climatic and oceanographic changes during the mid-Valanginian. © 2015 Elsevier B.V. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84930936775&doi=10.1016%2fj.gloplacha.2015.06.001&partnerID=40&md5=9d2f4d4e488871903ef6b25688bdc98e
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/11517
Appears in Collections: 全球变化的国际研究计划 气候变化与战略
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作者单位: UMR CNRS/Total/UPPA 5150, LFC-R: Laboratoire des Fluides Complexes et leurs Réservoirs, Université de Pau et des Pays de l'Adour, BP1155, Pau cedex, France
Recommended Citation:
Martinez M.,Deconinck J.-F.,Pellenard P.,et al. Astrochronology of the Valanginian-Hauterivian stages (Early Cretaceous): Chronological relationships between the Paraná-Etendeka large igneous province and the Weissert and the Faraoni events[J]. Global and Planetary Change,2015-01-01,131.