Title: Observaciones sobre el Holoceno tardio en la Isla de los Estados
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Abstract:
PALEOCLIMATOLOGICAL OBSERVATIONS ABOUT THE LATE HOLOCENE ON ISLA DE
LOS ESTADOS (STATEN ISLAND)
Isla de los Estados is an important nexus betwen South America and
Antarctica. A large amount of paleoclimatological studies have been
done on both continents, but the information from Isla de los Estados
is scarce: this work gives the first palaeoenvironmental and
palinological data of the Late Holocene. In a small old glacial circus
at ca. 400 m above sea level, a peat bed of 1.2 m thick was logged and
sampled. The botton of the peat was 14C dated in 1870 + - 60 year
BP. Due climate changes, the ice mass retreated (and perhaps
disappeared completely) to be replaced by glaciolacustrine
deposits and then the growth of the vegetation.
The glaciolacustrine deposits presents a good polinical concentration
and conservation, suggesting the co-existence of Nothofagus forest in
the lower surrounding areas of the island with a glacial environment,
similar to present Patagonia.
