SINGLE ZIRCON EVAPORATION AGES CONSTRAINING THE GROWTH OF THE ARCHEANARAVALLI CRATON, NORTHWESTERN INDIAN SHIELD

Authors
ROY AB KRONER A
Citation
Ab. Roy et A. Kroner, SINGLE ZIRCON EVAPORATION AGES CONSTRAINING THE GROWTH OF THE ARCHEANARAVALLI CRATON, NORTHWESTERN INDIAN SHIELD, Geological Magazine, 133(3), 1996, pp. 333-342
Citations number
24
Categorie Soggetti
Geosciences, Interdisciplinary
Journal title
Geological Magazine → ACNP
ISSN journal
00167568
Volume
133
Issue
3
Year of publication
1996
Pages
333 - 342
Database
ISI
SICI code
0016-7568(1996)133:3<333:SZEACT>2.0.ZU;2-O
Abstract
Single grain Pb-207/Pb-206 zircon ages were determined for granitoids and gneisses which constitute the Archaean basement rocks of the Arava lli craton of Rajasthan, northwestern Indian Shield. The protolith age s for two gneisses, collected from east of Udaipur, are similar to 323 0 Ma and 2887 Ma respectively. The granitoids display an intrusive rel ationship with the gneisses and yielded ages ranging between 2666 Ma a nd 2620 Ma. These ages provide the basis for a geochronological model of evolution of the oldest basement of the Aravalli craton.