The quaternary lacustrine deposits of the Serra dos Carajás (state of Pará, Brazil): ages and other preliminary results

Abstract

The Quatemary deposlts of the Amazon baslnln BrazU are stlll now very imperfectly known. The difflcultJes 01 penetratlon withln a huge tropical forest and a poor human occupatlon are probab/y the most Important factors. Though very scarce, the pub/Ished papers especially during the last flfteen years, allowed us to reach the concIusion that thls area was also subjected to fluctuatlon in paleocIlmate whlch was wortdwlde aClIve during the Quatemary. Thls certalnty 18 based on ecoIoglcal (