Browsing by Author "Renne P.R."
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Browsing by Author "Renne P.R."
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Min K.; Mundil R.; Renne P.R.; Ludwig K.R. (2000)Important sources of systematic error in 40Ar/39Ar dating arise from uncertainties in the 40K decay constants and K/Ar isotopic data for neutron fluence monitors (standards). The activity data underlying the decay constants ...
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Begemann F.; Ludwig K.R.; Lugmair G.W.; Min K.; Nyquist L.E.; Patchett P.J.; Renne P.R.; Shih C.Y.; Villa I.M.; Walker R.J. (2001)The accuracy of radioisotopic ages is, at present, limited by the accuracy of radioactive decay constants. A literature survey reveals that decay constants used in geo- and cosmochronology usually are assigned uncertainties ...
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Renne P.R. (1995)The Siberian Traps represent the largest known Phanerozoic manifestation of continental flood volcanism. The general agreement is now that the volcanism was of short duration (# 1 m.y.) and was synchronous with the ...
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Renne P.R. (1995)The Siberian Traps represent the largest known Phanerozoic manifestation of continental flood volcanism. The general agreement is now that the volcanism was of short duration (∼ 1 m.y.) and was synchronous with the ...
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Zhu R.; Shi R.; Pan Y.; Shi G.; Hoffman K.A.; Nomade S.; Renne P.R. (2004)A combined paleomagnetic and geochronologic study has been conducted on an andesite lava sequence at Jianguo (Liaoning province, northeastern China). Thermal demagnetization and thermomagnetic analysis revealed that natural ...
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Renne P.R.; Swisher C.C.; Deino A.L.; Karner D.B.; Owens T.L.; DePaolo D.J. (1998)The 40Ar39Ar dating method depends on accurate intercalibration between samples, neutron fluence monitors, and primary 40Ar40K (or other external) standards. The 40Ar39Ar age equation may be expressed in terms of ...
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Lyons J.L.; Coe R.S.; Zhao X.; Renne P.R.; Kazansky A.Y.; Izokh A.E.; Kungurtsev L.V.; Mitrokhin D.V. (2002)Paleomagnetic results obtained from the early Triassic Semeitau igneous series (SIS) yield a high-quality pole for eastern Kazakstan that is concordant with reference poles for Siberia and Europe, strongly supporting the ...
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Min K.; Farley K.A.; Renne P.R.; Marti K. (2003)The cooling history of the Acapulco meteorite for >400°C is well established using various chronometers suggesting extremely fast cooling (>1000°C/Ma). In contrast, the thermal history for low temperatures (<400°C) is ...
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Kwon Ja.; Min K.; Bickel P.J.; Renne P.R. (2002)To simultaneously evaluate the decay constant of 40K (λ) and the age of a standard (tstd) using isotopic data from geologic materials, we applied a series of statistical methods. The problem of estimating the most probable ...
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Renne P.R.; Farley K.A.; Becker T.A.; Sharp W.D. (2001)Cosmogenically enriched 38Ar/36Ar ratios are detectable in Ca-bearing terrestrial samples, and are resolvable from a uniform background value of 0.18826+/-0.00018 for materials lacking nucleogenic or kinetic mass fractionation ...
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Mundil R.; Ludwig K.R.; Renne P.R.; Metcalfe I.; Oberli F.; Nicoll R.S. (2001)The most profound biotic crisis in the Earth’s history, causing the near extinction of both terrestrial and marine life, occurred at the end of the Permian period about 253 Myr ago and marks the Paleozoic–Mesozoic era ...
Now showing items 1-11 of 11