Results 161 to 170 of about 157,575 (214)

Tempo of the Late Ordovician mass extinction controlled by the rate of climate change. [PDF]

Sci Adv
Zhang Z, Yang C, Sahy D, Zhan RB, Wu RC, Li Y, Deng Y, Huang B, Condon DJ, Rong J, Li XH.   +10 more
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Re-Os geochronology for sulfides and organic-rich sediments. [PDF]

Natl Sci Rev
Li Y, Glorie S, Selby D.
europepmc   +1 more source

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.
europepmc   +1 more source

Provenance and tectonic settings of late Triassic-Jurassic deposits in the Southwestern Yangtze block: evidence from the geochemistry, SW China. [PDF]

Sci Rep
Yao S, Wang Q, Mou C, Ren P, Zan B, Xie S, Liu J, Liu X.   +7 more
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Tracking lithospheric delamination and surface processes across the Messinian salinity crisis. [PDF]

Nat Commun
Mouthereau F, Boschetti L, Larrey M, Brichau S, Beaudoin NE, Huyghe D, Roberts NMW, Daëron M.   +7 more
europepmc   +1 more source

Magmatic evolution of the Kikai caldera revealed by zircon triple dating and its chemistry. [PDF]

Sci Rep
Ito H.
europepmc   +1 more source

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Interpretation of discordant U‐Pb zircon ages: An evaluation

Journal of Metamorphic Geology, 1997
The most widely used technique for the determination of high precision mineral growth ages in igneous and metamorphic rocks is dating of zircons with the U‐Pb method. The interpretation of these ages, particularly in metamorphic settings, is hampered by an incomplete understanding of the common phenomenon of partial Pb‐loss in zircon.
Mezger, Klaus, KROGSTAD, E. J.
openaire   +1 more source

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 AGE OF THE CHATTANOOGA SHALE

Geological Society of America Bulletin, 1960
An attempt was made to date the upper black unit of the Gassaway member of the Chattanooga shale which carries the maximum U/Pb ratio. Three samples were analyzed by isotopic dilution techniques. The U238-Pb206 ages on all 3 samples agreed within their experimental errors. The average of the two samples with reasonably small errors gave an apparent age
J. C. COBB, J. L. KULP
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U-Pb Ages from the Neoproterozoic Doushantuo Formation, China

Science, 2005
U-Pb zircon dates from volcanic ash beds within the Doushantuo Formation (China) indicate that its deposition occurred between 635 and 551 million years ago. The base records termination of the global-scale Marinoan glaciation and is coeval with similar dated rocks from Namibia, indicating synchronous deglaciation.
Daniel, Condon, Maoyan, Zhu, Samuel, Bowring, Wei, Wang, Aihua, Yang, Yugan, Jin   +5 more
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