Impact Glasses as Chronostratigraphic Benchmarks of the Late Cenozoic Pampean Record, Argentina

BENCHMARKS OF THE LATE CENOZOIC PAMPEAN RECORD, ARGENTINA M. A. Zarate, P. H. Schultz., W. Hames, C. Heil and J.King CONICET-UNLPAM, Avenida Uruguay 151, 6300 Santa Rosa, La Pampa, Argentina E-mail: mzarate@exactas.unlpam.edu.ar Department of Geological Sciences, Brown University, Providence, RI 02912-1846 USA, Auburn University, Auburn, AL36830 USA, University of Rhode Island, Narragansett, RI 02882, USA.