Monitoring the environmental evolution and its relationship with anthropogenic activities using magnetic and geochemical proxies on Lake Melincué sediments
- Achaga, Romina Valeria
- Gogorza, Claudia Susana
- Irurzun, Maria Alicia
- Gogichaishvili, Avtandil
- Mestelán, S.
- Ruiz Fernández, A. C.
- Sánchez Cabeza, J. A.
- Sánchez Bettucci, L.
- Sinito, Ana Maria
- Morales, J.
- Martínez, D.
DOIAbstract
Two sediment cores, collected from the center of the Lake Melincué (Santa Fe, Argentina), were analyzed using rock magnetic results, element composition, Total Organic and Inorganic Carbon (TOC and TIC) and Total Nitrogen (TN) to reconstruct the environmental variations in the last three centuries, associated with climatic changes and/or human activities. 210Pb dating, chronostratigraphic markers, and paleomagnetic results were used to create the age model of the cores. Rock magnetic analyses suggest that (titano)magnetite and a low proportion of hematite are the main magnetic phases. In addition, geochemical results compared with rock magnetic analysis indicate the possible presence of diagenetic dissolution. Four well-differentiated envir...
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