LIMNOGEOLOGY IN SOUTHERN SOUTH AMERICA: AN OVERVIEW

PIOVANO EDUARDO L.; CORDOBA FRANCISCO A.; STUTZ SILVINA

Latin American Journal of Sedimentology and Basin Analysis

Sociedad Argentina de Sedimentología

Año: 2014 vol. 21 p. 65 - 75

1669-7316

Abstract: One of the major goals of Limnogeology is to provide clues on past Earth systemenvironmental unevenness and feedbacks on longer time scales (100s-1,000s of years)than instrumental records, thus including periods with null or low anthropic influenceson the environment. The multiproxy approach in the analysis of lake records allowsto gain a wider overview than could be acquired from a single proxy data. Unlike theNorthern Hemisphere, reconstructions of Late Pleistocene and Holocene environmentalvariability across Southern South America have been hampered by the paucity ofcomplete and well-dated paleoclimate archives. However, last decades have been markedby a substantial increase of paleoclimatic research providing new data to analyze pastclimate variability from a regional perspective in Southern South America.This special issue include five articles applying a variety of proxy data (physical,chemical and biological) to elucidate climate and environmental changes on varioustime scales. Contributions cover a wide geographic distribution from the AntarcticPeninsula, Patagonia, Pampean region and NW Argentina up to the Río de la Plata Estuary.Results provide critical elements for further assessments of latitudinal paleo-circulationdynamics and hydroclimatic changes. The recent proliferation of limnogeological studiesin Argentina and Uruguay evidence the reinforcement of regional research networksproviding comparative and integrative analysis