CICTERRA 20351
CENTRO DE INVESTIGACIONES EN CIENCIAS DE LA TIERRA
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
GEOCHEMISTRY OF A LATE QUATERNARY LOESS-PALEOSOL SEQUENCE IN CENTRAL ARGENTINA
Autor/es:
CAMPODONICO VERENA AGUSTINA; PASQUINI ANDREA INÉS; ROUZAUT SABRINA
Lugar:
La Plata
Reunión:
Congreso; V Reunión Argentina de Geoquímica de la Superficie; 2019
Resumen:
A loess-paleosol sequence in central Argentina was geochemically analyzed. Corralito I sequence (32°00?7? S, 64°11?08? W, 469 m a.s.l) is composed by three paleosols and a buried soil separated by loess layers. Weathering indices (CIA, CIW, LWI), elemental ratios (ΣBases/Al2O3, Rb/Sr, CaO/TiO2, Na2O/TiO2), and mean annual paleo-precipitation indices (MAPPs) were calculated in order to obtain a weathering insight and to probe geochemical paleoclimatic proxies. The results indicate an incipient weathering degree throughout the sequence, without significant geochemical differences between paleosols and the loess mantles. Moreover, geochemical paleoclimatic proxies (MAPPs) do not detect a significantpaleoprecipitation variability for the time period recorded in the studied loess-paleosol sequence.
