Terminal Moraines, Outwash Plains, and Lake Terraces in the Vicinity of Lago Cardiel (49°S; Patagonia, Argentina)—Evidence for Miocene Andean Foreland Glaciations

Wenzens, Gerd

doi:10.1657/1523-0430(2006)38[276:tmopal]2.0.co;2

Cited by 28 publications

(11 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Moreover, northern Lago Cardiel (Fig. 1, number 16) ancient glacial limits and spillways were recognized by Wenzens (2006) as evidence of the eastern frontal position of very ancient (middle Miocene) piedmont glaciers. However, there is no general agreement about such a great eastwards expansion of the ice at such an early age.…”

Section: The Southern Patagonian Palaeo‐ice Lobesmentioning

confidence: 98%

“…These moraines are located on the tablelands. They have been interpreted as indicating glaciations of Miocene age (Wenzens, 2006), herein mapped as Pre‐GPG events, and undetermined age moraines for those of middle topographic position. Moreover, northern Lago Cardiel (Fig.…”

Section: The Southern Patagonian Palaeo‐ice Lobesmentioning

confidence: 99%

“…Pliocene and pre-Pliocene glacial deposits have been investigated by Mercer (1976), Wenzens (1999Wenzens ( , 2000Wenzens ( , 2006 and Rabassa, Coronato & Salemme (2005), among others, whereas the relationship of the Pleistocene glaciations with the Pampean biostratigraphical stages was discussed by Rabassa et al (2005) and . Holocene glaciations, including the Little Ice Age, have been studied by Glasser et al (2004Glasser et al ( , 2008, Wenzens (2005) and Kilian et al (2007), among others.…”

Section: Introductionmentioning

confidence: 99%

“…Pliocene and pre‐Pliocene glacial deposits have been investigated by Mercer (1976), Wenzens (1999, 2000, 2006) and Rabassa, Coronato & Salemme (2005), among others, whereas the relationship of the Pleistocene glaciations with the Pampean biostratigraphical stages was discussed by Rabassa et al . (2005) and Rabassa & Coronato (2009).…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Late Cenozoic glaciations in Patagonia and Tierra del Fuego: an updated review

Rabassa¹,

Coronato²,

Martı́nez³

2011

Biological Journal of the Linnean Society

205

155

View full text Add to dashboard Cite

The Patagonian glaciations developed from the latest Miocene (c. 6 Ma) in multiple events of varied duration and intensity. Most of the present glacial landscape is the result of the glacial modelling during the Pleistocene, since the Great Patagonian Glaciation (GPG; c. 1 Ma). The Patagonian Andes were covered by a continuous mountain ice sheet, from 37°S to Cape Horn (56°S), in at least five major glaciations over more than 15 cold events over the last million years. Before GPG, the glaciers were restricted to isolated ice caps along the mountain ranges. The present drainage network was developed after the Last Glacial Maximum [LGM; c. 25 calibrated kiloyears before present (cal. ka BP)], particularly those cases with drainage reversal, when the glaciers began to melt as a result of global climatic changes. The environmental impact of glaciations extended not only all over Patagonia, but to the Pampas as well.Las glaciaciones patagónicas se desarrollaron desde el final del Mioceno (ca. 6 Ma) en múltiples eventos, de variada duración e intensidad. La mayoría del paisaje andino actual es el resultado del modelado glaciario durante el Pleistoceno, desde la Gran Glaciación Patagónica (GGP; ca. 1 Ma). Los Andes Patagónicos fueron cubiertos por un manto de hielo de montaña continuo, desde 37°S hasta el Cabo de Hornos (56°S) a lo largo de por lo menos 5 glaciaciones mayores durante más de 15 eventos fríos en el último millón de años. Antes de la GGP, los glaciares estaban restringidos a casquetes glaciarios aislados a lo largo de las cadenas montañosas. El sistema de redes de drenaje actual, en especial en lo que hace a la inversión del drenaje, se desarrolló luego del Último Máximo Glacial (UMG; ca. 25 cal. ka A.P.), cuando los glaciares comenzaron a retirarse debido a cambios climáticos globales. El impacto ambiental de las glaciaciones se extendió, no sólo a toda la Patagonia, sino también a la región pampeana.

show abstract

Section: The Southern Patagonian Palaeo‐ice Lobesmentioning

confidence: 98%

Section: The Southern Patagonian Palaeo‐ice Lobesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Late Cenozoic glaciations in Patagonia and Tierra del Fuego: an updated review

Rabassa¹,

Coronato²,

Martı́nez³

2011

Biological Journal of the Linnean Society

205

155

View full text Add to dashboard Cite

show abstract

“…Ample geological evidence exists for older glaciations in central Patagonia and Tierra del Fuego Island (Rabassa et al, 2000(Rabassa et al, , 2005Wenzens, 2006;Lagabrielle et al, 2010) dating back to the Late Miocene and early Pleistocene respectively. In Tierra del Fuego Island, extensive glacial drifts include glacial, glacifluvial and glacilacustrine deposits that are thought to be derived from ice lobes that followed paths similar to the LPPIS (Rabassa et al, 2000).…”

Section: Introductionmentioning

confidence: 99%

Seismic stratigraphy and glacial cycles in the inland passages of the Magallanes Region of Chile, southernmost South America

et al. 2017

View full text Add to dashboard Cite

We present results of a marine geophysical survey that imaged submarine sedimentary and geomorphic features of the main inland channels of the Magallanes Region of Chile, in southernmost South America. This region holds a remarkable terrestrial and marine record of glacial variations in the closest landmass to Antarctica. We report evidence for grounded ice along the main channels associated with two ice lobes that flowed from Cordillera Darwin, part of the Austral Andes, into Central Estrecho de Magallanes and Seno Almirantazgo. Multibeam data show drumlins and glacial lineations in Whiteside Channel the northern continuation of Seno Almirantazgo, and iceberg plough marks in Central Estrecho de Magallanes. Multichannel seismic data show a complex array of seismic facies, interpreted as representing two main types of sedimentary units: glacimarine sediments, corresponding to glacial periods, and pelagic sediments, corresponding to interglacial periods. We find that there are two interglacial-glacial cycles represented in this marine sedimentary record. Chronologically: 1) the youngest glacial unit corresponds to the last regional glaciation (~31-18 ka); 2) these passageways deglaciated with the retreat from regional glacial limit 'D' (~17-18 ka), and 3) there is no marine sedimentary or morphological evidence that the Magallanes glaciers readvanced into the main passageways during the Antarctic Cold Reversal (~14-13 ka). These findings suggest that final deglaciation of southernmost South America was driven by the atmospheric and ocean warming that started~18 ka as recorded in Antarctic ice core records and sea surface temperature proxies offshore the Magallanes Region.

show abstract