UnB - Instituto de Geociências - Produção Científica
RESUMOS/ABSTRACTS de artigos publicados em revistas com corpo editorial

U-Pb zircon geochronology of Precambrian tin-bearing continental- type acid magmatism in central Brazil 

Pimentel M.M. 
Heaman L.
Fuck R.A.
 Marini O.J. 

Key words: granite; rhyolite; geochronology; tin; magmatism; uranium/lead dating; Proterozoic; Brazil; Goias.
Precambrian Research(1991), 52(3/4): 321-335. 

Abstract

U-Pb geochronological data for alkali-rich granitic and associated rhyolitic rocks from two different tin-bearing sub-provinces of the Goias tin province, in central Brazil, reveal two distinct episodes of mid-Proterozoic continental acid magmatism at c1770 Ma and 1600 Ma ago.