Results 221 to 230 of about 5,011,359 (270)

High-precision CA-ID-TIMS zircon U-Pb geochronology: a review of the Neoproterozoic time scale. [PDF]

Natl Sci Rev
Yang C, Bowyer F, Condon D.
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Reconstructing Eocene Antarctic river drainage from provenance analysis of Amundsen Sea embayment sediments. [PDF]

Sci Adv
Marschalek JW, van de Flierdt T, Siddoway CS, Thomson SN, Paxman GJG, Jamieson SSR, Conrad E, Licht KJ, Hemming SR, Bentley MJ, Hillenbrand CD, Smith JA, Klages JP, Fox M, Pastore G, Vermeesch P.   +15 more
europepmc   +1 more source

Re-Os geochronology for sulfides and organic-rich sediments. [PDF]

Natl Sci Rev
Li Y, Glorie S, Selby D.
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Arctic zircon U-Pb ages reveal multiphase glaciations in East Siberia during the late Quaternary. [PDF]

Nat Commun
Feng H, Yao Z, Shi X, Zhang Z, Lu H, Zhang H, Liu Y, Shan X, Dong J, Dong L, Yang G, Hu L, Vasilenko Y, Astakhov A, Bosin A.   +14 more
europepmc   +1 more source

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Zircon recrystallisation microstructures andthe implications for U-Pb dating

2021
<p>Uranium-lead dating of zircon has been used extensively in geochronological studies based on the widespread occurrence of zircon and its resistance to chemical and physical weathering. Previous research has shown that despite their apparent robustness, many zircons contain evidence for recrystallisation, such as the replacement of the ...
Jasper Huijsmans, Maartje Hamers, Martyn Drury, Jim Lee   +3 more
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Air abrasion experiments in U-Pb dating of zircon

Chemical Geology, 1986
Abstract Air abrasion of zircon grains can remove metamict material that has lost radiogenic Pb and zircon overgrowths that were added during younger events and thereby improve the precision of the age measurements and permit closer estimates of the original age.
S.S. Goldich, Lynn B. Fischer
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Rb–Sr and U–Pb dating of bentonites

Canadian Journal of Earth Sciences, 1983
A 6 in. (15 cm) bentonite in the Z coal (Cretaceous–Tertiary boundary) in eastern Montana was sampled at four different places, and biotite, sanidine, and zircon were separated from the clay. U–Pb analyses of purified zircons yielded small systematic variations from concordant U–Pb dates.
H. Baadsgaard, J. F. Lerbekmo
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U-Pb dating of a speleothem of Quaternary age

Geochimica et Cosmochimica Acta, 1998
We demonstrate that U-Pb dating is a promising method for secondary carbonate materials of Quaternary age and older by obtaining a 206Pb∗/238U age for a speleothem with high U (>10 μg g−1) and very low Pb (
Richards, DA, Bottrell, SH, Cliff, RA, Strohle, K, Rowe, PJ   +4 more
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U–Pb SHRIMP dating of uraniferous opals

Chemical Geology, 2006
Abstract U–Pb and U-series analyses of four U-rich opal samples using sensitive high-resolution ion microprobe (SHRIMP) demonstrate the potential of this technique for the dating of opals with ages ranging from several tens of thousand years to millions of years.
Nemchin, Alexander, Neymark, L., Simons, S.   +2 more
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