Results 201 to 210 of about 6,544,459 (237)

Unraveling histories of hydrothermal systems via U–Pb laser ablation dating of skarn garnet

Earth and Planetary Science Letters, 2018
Skarns are one of the few direct genetic links between magma and base metals in ore deposits, yet temporal relationships between skarns and their assumed causative plutons are rarely confirmed with radiometric formation ages. Skarns have been notoriously
Michelle Gevedon, S. Seman, J. Barnes, J. Lackey, D. Stockli   +4 more
semanticscholar   +1 more source

?????????????????? (U-Pb ???? ??????????????????) ?????? ???? ???????????????????? ?????????????????? ?????????????????????? ???????????? ?? ?????????? ???????? ?????????????????????? (????????????????-???????????????? ?????????? ???????????????????????? ????????)

2014
???????????????? ???????????????????? U-Pb ???? ???????????????? ?????????????????? ??????????????????, ???? ?????????????????????????? ?? ???????????? ??. ?????????? ?? ?????????????????? ???????? ???? ?????????????????????? ????????????. ??????????????????????, ???? ???? ???????????? ???????????????????????????????? 1996 ?? 13 ?????? ????. ????????, ?
openaire   +3 more sources

U-Pb ?????????????? ?????????????????????????????????? ???????????????? ???????????????????????? ?????????????? ???????????????????????????? ?????????? (???????????????????????????????????????? ???????????????? ?????????????????????? ????????)

2017
It is determined, that two-feldspar granites of the Vishnevoe massif of the Slavgorod block are the most ancient crustal granites in the Middle-Dnieper granite-greenstone terrane. Their isotopic age for monazite ??? 2985 Ma. They are close in age with enderbites of the Slavgorod complex (3014 ?? 7 Ma) and granodiorites of the Dnieper complex (2972 ?? 6
openaire   +1 more source

Plesovice zircon : A new natural reference material for U-Pb and Hf isotopic microanalysis

, 2008
J. Slama, J. Košler, D. Condon, J. Crowley, A. Gerdes, J. Hanchar, M. Horstwood, G. Morris, L. Nasdala, N. Norberg, U. Schaltegger, B. Schoene, M. Tubrett, M. Whitehouse   +13 more
semanticscholar   +1 more source

The application of laser ablation-inductively coupled plasma-mass spectrometry to in situ U–Pb zircon geochronology

, 2004
S. Jackson, N. Pearson, W. Griffin, E. Belousova   +3 more
semanticscholar   +1 more source

Correction of common lead in U-Pb analyses that do not report 204Pb

, 2002
T. Andersen
semanticscholar   +1 more source

Calculation of uncertainties of U-Pb isotope data

Earth and Planetary Science Letters, 1980
Abstract Equations are derived for the estimation of errors and error correlations for various types of U-Pb isotope data, taking into account ion-beam instabilities, run-to-run variability in mass-discrimination, uncertainties in Pb and U concentrations, and uncertainties in initial-Pb and blank-Pb amount and isotopic composition. Equations are also
openaire   +1 more source

???????????????????? ?????????????????? ?????????? ?????????????????????? ???????? ???? ???????????? U-Pb ???????????? (3,6???3,2 ???????? ??????)

2014
???? ???????????????????? ???????? ???????????????????????????? ?????????????????????? (3,6???3,2 ???????? ??????) ?????????????????????? ???? ???????? ???????????????? ??? ?? ??????????????-?????????????????????????? ?????????????????????? ???????? ?? ????????????????-???????????????????????? ?????????????????? ??????????????????????-???????????????? ?
openaire   +1 more source

The decay constant of 176Lu determined from Lu-Hf and U-Pb isotope systematics of terrestrial Precambrian high-temperature mafic intrusions

, 2003
U. Söderlund, P. Patchett, J. Vervoort, C. Isachsen   +3 more
semanticscholar   +1 more source

Zircon trace element geochemistry: partitioning with garnet and the link between U–Pb ages and metamorphism

, 2002
D. Rubatto
semanticscholar   +1 more source