Using 40Ar/39Ar ages of intercalated silicic tuffs to date flood basalts: Precise ages for Steens Basalt Member of the Columbia River Basalt Group
Gail A. Mahood,Thomas R. Benson +1 more
TLDR
In this paper, the authors used 40Ar/39Ar feldspar ages for silicic tuffs intercalated with and overlying sections of Steens Basalt, the earliest lavas of the Middle Miocene Columbia River Basalt Group in the northwestern United States, provide high-precision ages that, for the first time, make it possible to resolve age differences with stratigraphic position within a section of these flood lavas.About:
This article is published in Earth and Planetary Science Letters.The article was published on 2017-02-01 and is currently open access. It has received 28 citations till now. The article focuses on the topics: Flood basalt & Basalt.read more
Citations
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Rapid eruption of the Columbia River flood basalt and correlation with the mid-Miocene climate optimum.
Jennifer Kasbohm,Blair Schoene +1 more
TL;DR: U-Pb ages show Earth’s youngest flood basalt province erupted in 750 ka starting ~16.65 Ma during Miocene global warming, indicating that the onset of flood volcanism is nearly contemporaneous with that of the MMCO.
Global Perturbation of the Carbon Cycle at the Onset of the Miocene Climatic Optimum
TL;DR: In this paper, the authors present high-resolution benthic foraminiferal and bulk carbonate stable isotope records in an exceptional, continuous, carbonate-rich sedimentary archive (Integrated Ocean Drilling Program Site U1337, eastern equatorial Pacific Ocean), which offer a new view of climate evolution over the onset of the Miocene Climatic Optimum (MCO).
U-Pb geochronology of the Deccan Traps and relation to the end-Cretaceous mass extinction
Blair Schoene,Kyle M. Samperton,Michael P. Eddy,Gerta Keller,Thierry Adatte,Samuel A. Bowring,Syed F.R. Khadri,Brian Gertsch +7 more
TL;DR: U-Pb zircon geochronology is applied to Deccan rocks and it is shown that the main phase of eruptions initiated ~250,000 years before the Cretaceous-Paleogene boundary and that >1.1 million cubic kilometers of basalt erupted in ~750,000 Years.
Synchronizing rock clocks of Earth history
Klaudia F. Kuiper,Klaudia F. Kuiper,Alan L. Deino,Frederik J Hilgen,Wout Krijgsman,Paul R. Renne,Paul R. Renne,Jan R. Wijbrans +7 more
TL;DR: In this article, the ages of tephras in marine deposits in Morocco were compared to calibrate the age of Fish Canyon sanidine, the most widely used standard in 40 Ar/39 Ar geochronology.
References
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Subcommission on geochronology: Convention on the use of decay constants in geo- and cosmochronology
R.H. Steiger,E. Jäger +1 more
TL;DR: The IUGS Subcommission on Geochronology (FOOTNOTE 4) as discussed by the authors recommended the adoption of a standard set of decay constants and isotopic abundances in isotope geology.
Journal ArticleDOI
Intercalibration of standards, absolute ages and uncertainties in 40Ar/39Ar dating
Paul R. Renne,Paul R. Renne,Carl C. Swisher,Alan L. Deino,Daniel B. Karner,Thomas L. Owens,Donald J. DePaolo +6 more
TL;DR: McDougall et al. as mentioned in this paper derived intercalibration factors for McClure Mountain hornblende (MMhb-1), GHC-305 biotite, GA-1550, Taylor Creek sanidine (TCs), relative to Fish Canyon sanidine(ACs), were derived from 797 analyses involving 11 separate irradiations with well-constrained neutronfluence variations.
Journal ArticleDOI
Synchronizing Rock Clocks of Earth History
Klaudia F. Kuiper,Klaudia F. Kuiper,Alan L. Deino,Frederik J Hilgen,Wout Krijgsman,Paul R. Renne,Paul R. Renne,Jan R. Wijbrans +7 more
TL;DR: This calibration of tephras in marine deposits in Morocco to calibrate the age of Fish Canyon sanidine provides tight constraints for the astronomical tuning of pre-Neogene successions, resulting in a mutually consistent age of ∼65.95 Ma for the Cretaceous/Tertiary boundary.
Journal ArticleDOI
A redetermination of the isotopic abundances of atmospheric Ar
Jee-Yon Lee,Jee-Yon Lee,Jee-Yon Lee,Kurt Marti,Jeffrey P. Severinghaus,Kenji Kawamura,Kenji Kawamura,Hee-Soo Yoo,Jin Bok Lee,Jin Seog Kim +9 more
TL;DR: In this article, the isotopic abundances of atmospheric Ar were determined using a dynamically operated isotope ratio mass spectrometer with minor modifications and special gas handling techniques to avoid fractionation.
Journal ArticleDOI
Revised definition of Large Igneous Provinces (LIPs)
TL;DR: In this paper, a revised definition of large Igneous provinces (LIPs) is proposed, which is based on the definition of LIP events from other melting events of the upper mantle, and reassess and revise how we define LIPs.
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