Results 191 to 200 of about 2,046 (219)

Age of Aswan monumental granite, Egypt by U/Pb dating of zircon

Precambrian Research, 1978
The basement rocks of Aswan, Egypt, are among the best studied in the country. Its monumental granite has been dated by various techniques. Here, several suites of zircon separated from the monumental granite have been dated by the U–Pb method. A slight discordance is observed between U 238 /Pb 206 and U 235 /Pb 207 ages, and an average ages of 565 ...
A.A. Abdel-Monem, P.M. Hurley
openaire   +1 more source

U-Pb zircon age of the Görbjörnarp syenite in Skåne, southern Sweden

Geologiska Föreningen i Stockholm Förhandlingar, 1991
Abstract Zircons were separated from a syenite body occurring along the Protogine Zone near Gorbjornarp in northeastern Skane, southern Sweden. U-Pb analyes of the zircons yield an almost concordant age of 1204+14 -8 (2σ) Ma. The MSWD is 0.740. The obtained age is interpreted as the intrusion age of the syenite.
Bent T. Hansen, Anders Lindh
openaire   +1 more source

U–Pb zircon ages as a sediment mixing tracer in the Nepal Himalaya

Earth and Planetary Science Letters, 2005
This paper presents a new approach to quantify sediment mixing based on the mixing of U–Pb zircon age distributions within sediment. Two statistical techniques are presented to determine the proportion in which two known age distributions combine to create a known mixed age distribution.
W AMIDON, D BURBANK, G GEHRELS
openaire   +1 more source

UNMIXING DETRITAL ZIRCON U-PB AGE DISTRIBUTIONS

Geological Society of America Abstracts with Programs, 2017
Kurt E. Sundell, Joel E. Saylor
openaire   +1 more source

The U‐Pb zircon age of the Rödön rapakivi granite, central Sweden

GFF, 1994
Abstract The analytical data of U‐Pb multigrain analyses of zircons separated from a sample of rapakivi granite at Rodon, central Sweden, have been plotted in a concordia diagram and yield an upper intercept age of 1513±5Ma. This age is sligthly younger than the intrusive activity at 1590 to 1540 Ma of rapakivi granites in southwestern Finland and ...
openaire   +1 more source

Analyses from a validated global U Pb detrital zircon database: Enhanced methods for filtering discordant U Pb zircon analyses and optimizing crystallization age estimates

Earth-Science Reviews, 2021
CARLOS Ganade, Stephen Puetz, Christopher Spencer   +2 more
exaly  

Needles in a haystack: Detrital zircon U Pb ages and the maximum depositional age of modern global sediment

Earth-Science Reviews, 2020
Glenn Sharman, Matthew Malkowski
exaly  

Discriminating Qiangtang, Lhasa, and Himalayan sediment sources in the Tibetan Plateau by detrital-zircon U-Pb age and Hf isotope facies

Earth-Science Reviews, 2023
Weiwei Xue, Xiumian Hu, Eduardo Garzanti   +2 more
exaly  

Qinghu zircon: A working reference for microbeam analysis of U-Pb age and Hf and O isotopes

Science Bulletin, 2013
Xian-Hua Li, Yu Liu, Guoqiang Tang
exaly  

Precise determination of Phanerozoic zircon Pb/Pb age by multicollector SIMS without external standardization

Geochemistry, Geophysics, Geosystems, 2009
Yu Liu, Qiuli Li
exaly