Skip to main content Accessibility help
×
Home

Late Quaternary glaciation history of isla de los Estados, southeasternmost South America

  • Per Möller (a1), Christian Hjort (a1), Svante Björck (a1), Jorge Rabassa (a2) (a3) and Juan Federico Ponce (a2)...

Abstract

Isla de los Estados is a mountainous island southeast of Tierra del Fuego, in southernmost South America. Its central and eastern parts have an alpine topography, transected by U-shaped valleys, small, partly over-deepened fjords, and a multitude of abandoned cirques, all associated with extensive former local glaciations. Traces of glacial erosion generally reach 400–450 m a.s.l., and above that trimline a distinct sharp-edged nunatak derived landscape is present. The westernmost part of the island has a lower, more subdued topography, reflecting its "softer" geology but possibly also over-running and erosion by mainland-derived ice streams. The present study concentrated on glacigenic sediment sequences exposed along coastal erosional cliffs. A combination of OSL and 14C datings show that these sediments mostly date from the latest (Wisconsinan/Weichselian) glacial cycle, i.e. from the last ca. 100 ka with the oldest (glaciolacustrine) deposits possibly as old as 90–80 ka. The upper parts of overlying tills, with associated lateral and terminal moraines from glaciers that expanded onto an eustatically exposed dry shelf north of the island, date from the last global glacial maximum (LGM). Radiocarbon ages of peat and lake sediments indicate that deglaciation began 17–16 cal ka BP.

Copyright

Corresponding author

*Corresponding author. Fax: +46 46 2224419.E-mail address: per.moller@geol.lu.se (P. Móller).

References

Hide All
Ashley, G.M., (1988). Classification of glaciolacustrine sediments. Goldthwait, R.P., Matsch, C.L., Genetic Classification of Glacigenic Sediments Balkema, Rotterdam., 243260.
Auer, V., (1956). The Pleistocene of Fuego-Patagonia. Part I: The Ice and Interglacial Ages. Annales Academia Scientiarum Fennicae, Series A III 45, 122.
Benn, D.I., (1995). Fabric signature of subglacial till deformation, Breidamerkurjökull, Iceland. Sedimentology 42, 735747.
Benn, D.I., Evans, D.J.A., (1996). The interpretation and classification of subglacially-deformed materials. Quaternary Science Reviews 15, 2352.
Benn, D.I., Evans, D.J.A., (1998). Glaciers and Glaciation. Arnold, London.
Bennett, K.D., Haberle, S.G., Lumley, S.H., (2000). The Last Glacial–Holocene transition in southern Chile. Science 290, 325328.
Björck, S., Hjort, C., Ljung, K., Möller, P., Wohlfarth, B., (2007). Isla de los Estados – Quaternary geology and palaeoclimatology at the end of the world. Rickberg, S., Swedish Polar Research Secretariat, Year book 2006 Swedish Polar Research Secretariat, Stockholm., 4449.
Boulton, G.S., (1996). Theory of glacial erosion, transport and deposition as a consequence of subglacial sediment deformation. Journal of Glaciology 42, 4362.
Bronk Ramsey, C., (1995). Radiocarbon calibration and analysis of stratigraphy: the OxCal Program. Radiocarbon 37, 425430.
Bronk Ramsey, C., (2001). Development of the Radiocarbon Program OxCal. Radiocarbon 43, 355363.
Caldenius, C., (1932). Las glaciaciones cuaternarias de la Patagonia y Tierra del Fuego. Geografiska Annaler 14, 1164.
Caminos, R., Nullo, F., (1979). Descriptión Geológica de la Hoja 67 e, Isla de los Estados. Servicio Geológico Nacional, Buenos Aires.
Clark, P.U., (1991). Striated clast pavements, products of deforming subglacial sediments?. Geology 19, 530533.
Clark, P.U., Dyke, A.S., Shakun, J.D., Carlson, A.E., Clark, J., Wohlfarth, B., Mitrovica, J.X., Hostetler, S.W., McCabe, A.M., (2009). The Last Glacial Maximum. Science 325, 710714.
Cutler, K.B., Edwards, R.L., Taylor, F.W., Cheng, H., Adkins, J., Gallup, C.D., Cutler, P.M., Burr, G.S., Bloom, A.L., (2003). Rapid sea-level fall and deep-ocean temperature change since the last glacial period. Earth and Planetary Science Letters 206, 253271.
Dalziel, I.W.D., Eliott, D., (1973). Evolution of the Scotia. Nature 233, 246252.
Dalziel, I.W.D., Caminos, R., Palmer, K.F., Nullo, F., Casanova, R., (1974). South extremity of Andes: geology of Isla de los Estados, Argentine Tierra del Fuego. American Association of Petroleum Geologists Bulletin 58, 12, 25022512.
Denton, G.H., Heusser, C.J., Lowell, T.V., Moreno, P.I., Andersen, B.G., Heusser, L.E., Schlüchter, C., Marchant, D.R., (1999). Inter-hemisphere linkage of palaeoclimate during the last glaciation. Geografiska Annaler 81A, 107153.
Elson, J.A., (1988). Comments on glacitectonite, deformation till and comminution till. Goldthwait, R.P., Matsch, C.L., Genetic Classification of Glacigenic Sediments, 85–88 Balkema, Rotterdam.
Evans, D.J.A., Phillips, E.R., Hiemstra, J.F., Auton, C.A., (2006). Subglacial till: formation, sedimentary characteristics and classification. Earth-Science Reviews 78, 115176.
Eyles, N., Eyles, C.H., Miall, A.D., (1983). Lithofacies types and vertical profile models; an alternative approach to the description and environmental interpretation of glacial diamicton and diamictite sequences. Sedimentology 30, 393410.
Fuchs, M., Owen, L.A., (2008). Luminiscence dating of glacial and associated sediments: review, recommendations and future directions. Boreas 37, 636659.
Garreaud, R.D., Vuille, M., Compagnucci, R., Marengo, J., (2009). Present-day South American climate. Palaeogeography, Palaeclimatology, Palaeoecology 281, 180195.
Heusser, C.J., (2003). Ice Age Southern Andes – A Chronicle Of Palaeoecological Events. Developments in Quaternary Science vol. 3, Elsevier, Amsterdam.
Hulton, N.R.J., Purves, R.S., McCulloch, R.D., Sugden, D.E., Bentley, M.J., (2002). The Last Glacial Maximum and deglaciation in southern South America. Quaternary Science Reviews 21, 233241.
Johns, H., (1981). The vegetation history and paleoclimatology for the Late Quaternary of Isla de los Estados, Argentina. Michigan State University, Dept. of Geology, MSc thesis.
Kaplan, M.R., Fogwall, C.J., Sugden, D.E., Hulton, N.J.R., Kubik, P.W., Freeman, S.P.H.T., (2008). Southern Patagonian glacial chronology for the Last Glacial period and implications for Southern Ocean climate. Quaternary Science Reviews 27, 284294.
Lambeck, K., Chappell, J., (2001). Sea level change trough the last glacial cycle. Science 292, 679686.
Ljung, K., Ponce, J.F., (2006). Periglacial features on Isla de los Estados, Tierra del Fuego, Argentina. III Congreso Argentino de Cuaternario y Geomorfología vol. 1, Córdoba, Argentina., 8590.
Malagnino, E.C., Olivero, E.B., (1999). New evidence of the total glaciation of the Isla Grande de Tierra Del Fuego. Journal of South American Earth Sciences 12, 343348.
Mark, D.M., (1973). Analysis of axial orientation data, including till fabrics. Geological Society of America Bulletin 84, 13691374.
McCormac, G., Hogg, A.G., Blackwell, P.G., Buck, C.E., Higham, T.F.G., Reimer, P.J., (2004). SHCal04 Southern Hemisphere calibration, 0–11.0 cal kyr BP. Radiocarbon 46, 10871092.
Murray, A.S., Wintle, A.G., (2000). Luminiscence dating of quartz using an improved single-aliquot regenerative-dose protocol. Radiation Measurements 32, 5773.
Murray, A.S., Marten, R., Johnston, P., Martin, A.J., (1987). Analysis for naturally occurring radionuclides at environmental concentrations by gamma spectrometry. Journal of Radioanalytical and Nuclear Chemistry 115, 263288.
Nordenskjöld, O., (1898). Geologie, Geographie und Anthropologie. Wissenschaftliche Ergebnisse der schwedischen Expedition nach den Magellansländern 1895–1897, unter Leitung von Otto Nordenskjöld Norstedt and Söner, Stockholm.
Olley, J.M., Murray, A.S., Roberst, R.G., (1996). The effects of disequilibria in uranium and thorium decay chains on burial dose rates in fluvial sediments. Quaternary Geochronology 15, 751760.
Pendall, E., Markgraf, V., White, J.W.C., Dreier, M., (2001). Multiproxy record of Late Pleistocene–Holocene climate and vegetation changes from a peat bog in Patagonia. Quaternary Research 55, 168178.
Piotrowski, J.A., Kraus, A.M., (1997). Response of sediment to ice sheet loading in northwestern Germany: effective stresses and glacier-bed stability. Journal of Glaciology 43, 495502.
Piotrowski, J.A., Larsen, N.J., Junge, F.W., (2004). Reflections on soft subglacial beds as a mosaic of deforming and stable spots. Quaternary Science Reviews 23, 9931000.
Ponce, F., (2008). Palinología y Geomorfología del Cenozoico tardío de Isla de los Estados. Unpublished PhD. Thesis, Departamento de Geología, Universidad Nacional del Sur, Argentina.
Ponce, J.F., Rabassa, J., Martínez, O.A., (2009). Morfometría y génesis de los fordos de Isla de los Estados, Tierra del Fuego. Revistita de la Asociación Geológia Argentina 65, 638647.
Rabassa, J., (2008). Late Cenozoic glaciations in Patagonia and Tierra del Fuego. Rabassa, J., The Late Cenozoic af Patagonia and Tierra del Fuego . Developments in Quaternary Science. vol. 11, Elsevier, 151204.
Rabassa, J., Coronato, A., Bujalesky, G., Salemme, M., Roig, C., Meglioli, A., Heusser, C., Gordillo, S., Roig, F., Borromei, A., Quattrocchio, M., (2000). Quaternary of Tierra del Fuego, southernmost South America: an updated review. Quaternary International 68–71, 217240.
Reimer, P.J., Baillie, M.G.L., Bard, E., Bayliss, A., Beck, J.W., Bertrand, C.J.H., Blackwell, P.G., Buck, C.E., Burr, G.S., Cutler, K.B., Damon, P.E., Edwards, R.L., Fairbanks, R.G., Friedrich, M., Guildersson, T.P., Hogg, A.G., Hughen, K.A., Kromer, B., McCormac, G., Manning, S.W., Ramsey, C.B., Raimer, R.W., Remmele, S., Southon, J.R., Stuiver, M., Talamo, S., Taylor, C.B., Plicht, J.V.D., Weyhenmayer, C.E., (2004). IntCal04 terrestrial radiocarbon age calibration, 0–26 cal ky BP. Radiocarbon 46, 10291058.
Smith, N.D., Ashley, G., (1985). Proglacial lacustrine environment. In: Ashley, M, Shaw, , and Smith, D., (Eds.), Glacial sedimentary environments . SEPM Short Course. 16, 135216.
Stott, L., Timmermann, A., Thunell, R., (2007). Southern Hemisphere and deep-sea warming led deglacial CO2 rise and tropical warming. Science 318, 435438.
Sugden, D.E., Bentley, M.J., Fogwill, C.J., Hulton, N.R.J., McCulloch, R.D., Purves, R.S., (2005). Late-glacial glacier events in southernmost South America: a blend of "northern" and "southern" hemispheric climatic signals?. Geografiska Annaler 87A, 273288.
Unkel, I., Björck, S., Wohlfarth, B., (2008). Deglacial environmental changes on Isla de los Estados (54.5°S), southeastern Tierra del Fuego. Quaternary Science Reviews 27, 15411554.

Keywords

Related content

Powered by UNSILO

Late Quaternary glaciation history of isla de los Estados, southeasternmost South America

  • Per Möller (a1), Christian Hjort (a1), Svante Björck (a1), Jorge Rabassa (a2) (a3) and Juan Federico Ponce (a2)...

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed.