Sensitive high-resolution ion microprobe U-Pb dating of prograde and retrograde ultrahigh-temperature metamorphism as exemplified by Sri Lankan granulites
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چکیده
منابع مشابه
40Ar/39Ar and ion microprobe U^Pb zircon dating of the Erongo, Damaraland, Namibia
The Erongo subvolcanic center in Namibia is the largest composite, bimodal complex in the Mesozoic Etendeka igneous province of Namibia. This study of 40Ar/39Ar and high spatial resolution U^Pb zircon dating demonstrates that emplacement of the various igneous units at Erongo took place within a time span equivalent to or shorter than geochronologically resolvable age differences (ca. 2 Ma), an...
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Volume, edited by S. L. Baldwin and G. S. Lister, pp. 13 –14, Geol. Soc. of Am., Boulder, Colo. Black, L. P., S. L. Kamo, C. M. Allen, J. N. Aleinikoff, D. W. Davis, R. J. Korsch, and C. Foudoulis (2003), TEMORA 1: A new zircon standard for Phanerozoic U-Pb geochronology, Chem. Geol.,
متن کاملIon Microprobe U-Pb Dating of Phosphates in Lunar Basaltic Meteorites
Tanabe, N. Fujikawa, S. Tanikawa, Y. Sano, M. Anand and L. A. Taylor, Department of Earth and Planetary Systems Science, Hiroshima University, Higashi-Hiroshima 739-8526, JAPAN ([email protected]), Center for Advanced Marine Research, Ocean Research Institute, The University of Tokyo, Nakano-ku 164-8639, JAPAN, Department of Earth Sciences, CEPSAR, Walton Hall, The Open University,Mi...
متن کاملConstraints on timing of peak and retrograde metamorphism in the Dabie Shan Ultrahigh-Pressure Metamorphic Belt, east-central China, using U–Th–Pb dating of zircon and monazite
The Dabie Shan Ultrahigh-Pressure Metamorphic (UHPM) Belt occupies the suture between the Yangtze and Sino-Korean blocks in east-central China. The timing of UHPM in the Dabie belt is controversial, and most recent data come from dating of zircons. Monazite has recently been recognized as useful for dating of multiple tectonic events due to its preservation of multiple growth zones, and monazit...
متن کاملU–Pb dating of metamorphic minerals: Pan-African metamorphism and prolonged slow cooling of high pressure granulites in Tanzania, East Africa
U–Pb monazite and zircon ages reveal that the high pressure granulites from eastern Tanzania were metamorphosed during a Pan-African tectonothermal episode. These mineral ages range from 610 to 655 Ma and indicate that peak metamorphic conditions were diachronous in the different granulite domains. U–Pb titanite and rutile ages define integrated cooling rates of 2–5°C/Ma for all investigated gr...
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ژورنال
عنوان ژورنال: Geology
سال: 2010
ISSN: 0091-7613,1943-2682
DOI: 10.1130/g31251.1