Waldmann, Nicolas D; Ariztegui, Daniel; Anselmetti, Flavio S; Austin, James A Jr; Moy, Christopher M; Stern, C; Recasens, Cristina; Dunbar, Robert B (2010): Geochemical composition and radiocarbon ages of cores from Lago Fugnano, Tierra del Fuego [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.840656, Supplement to: Waldmann, ND et al. (2010): Holocene climatic fluctuations and positioning of the Southern Hemisphere westerlies in Tierra del Fuego (54° S), Patagonia. Journal of Quaternary Science, 25(7), 1063-1075, https://doi.org/10.1002/jqs.1263
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Abstract:
Recent advances in the chronology and the palaeoclimatic understanding of Antarctic ice core records point towards a larger heterogeneity of latitudinal climate fluctuations than previously thought. Thus, realistic palaeoclimate reconstructions rely in the development of a tight array of well-constrained records with a dense latitudinal coverage. Climatic records from southernmost South America are critical cornerstones to link these Antarctic palaeoclimatic archives with their South American counterparts. At 54° S on the Island of Tierra del Fuego, Lago Fagnano is located in one of the most substantially and extensively glaciated regions of southernmost South America during the Late Pleistocene. This elongated lake is the largest (~110km long) and non-ice covered lake at high southern latitudes. A multi-proxy study of selected cores allows the characterisation of a Holocene sedimentary record. Detailed petrophysical, sedimentological and geochemical studies of a complete lacustrine laminated sequence reveal variations in major and trace elements, as well as organic content, suggesting high variability in environmental conditions. Comparison of these results with other regional records allows the identification of major known late Holocene climatic intervals and the proposal for a time for the onset of the Southern Westerlies in Tierra del Fuego. These results improve our understanding of the forcing mechanisms behind climate change in southernmost Patagonia.
Project(s):
Coverage:
Median Latitude: -54.565503 * Median Longitude: -67.620975 * South-bound Latitude: -54.568450 * West-bound Longitude: -67.915200 * North-bound Latitude: -54.564520 * East-bound Longitude: -67.522900
Date/Time Start: 2006-01-01T00:00:00 * Date/Time End: 2006-01-01T00:00:00
Comment:
Data extracted in the frame of a joint ICSTI/PANGAEA IPY effort, see http://doi.pangaea.de/10.1594/PANGAEA.150150
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
2 datasets
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Datasets listed in this publication series
- Waldmann, ND; Ariztegui, D; Anselmetti, FS et al. (2010): (Table 2) Radiocarbon and calibrated ages of Lago Fagnano core LF06-PC16, Tierra del Fuego. https://doi.org/10.1594/PANGAEA.840655
- Waldmann, ND; Ariztegui, D; Anselmetti, FS et al. (2010): (Table 1) Geochemical composition of the tephra layers found in Lago Fagnano cores LF06-PC12 and LF06-PC16, Tierra del Fuego. https://doi.org/10.1594/PANGAEA.840654