Glacial and postglacial sedimentation in the Fryxell basin, Taylor Valley, southern Victoria Land, Antarctica

Wagner, Bernd; Melles, Martin; Doran, Peter T.; Kenig, Fabien; Forman, Steven L.; Pierau, Roberto; Allen, Phillip P.

doi:10.1016/j.palaeo.2006.04.003

Cited by 44 publications

(43 citation statements)

References 45 publications

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“…It has greatly increased in size over the past 1,000 years, with apparently much of that increase occurring in the latter portion of the 20th century (Hood et al 1998). Sediment core data from the lake confirm its long history (*48 kyr), as well as its dynamic hydrology (Wagner et al 2006). The sediment record suggests that the highest stand of Glacial Lake Washburn occurred prior to the Last Glacial Maximum (LGM), but the lowering of lake levels fluctuated discontinuously, with the lowest levels reached between 2.5 and 1.0 kyr ago (Lyons et al 1998a).…”

Section: Physical and Chemical Structure And Evolution Of Lake Fryxellmentioning

confidence: 74%

The Saline Lakes of the McMurdo Dry Valleys, Antarctica

Green

Lyons

2008

Aquat Geochem

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The McMurdo Dry Valleys of Antarctica are among a rare group of ice-free regions lying along the coast of an otherwise ice-burdened continent. For Antarctica, these are highly atypical regions of exposed rock and barren soils. Within their 4,000 km 2 expanse, the valleys contain a number of permanently ice-covered, closed-basin lakes, which range from freshwater to highly saline environments. This paper examines the physical structure, geochemistry, nutrient and trace metal dynamics, biology, and hydrologic history of saline Lake Bonney (both east and west lobes), Fryxell, Vanda, and Joyce and provides an update to recently published volumes on these pristine systems.

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Section: Physical and Chemical Structure And Evolution Of Lake Fryxellmentioning

confidence: 74%

The Saline Lakes of the McMurdo Dry Valleys, Antarctica

Green

Lyons

2008

Aquat Geochem

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“…Lithofacies 2 has been sub-divided into lithofacies 2a (658 to 590 cm) with finegrained sediments, relatively high OM and TOC/TN and lithofacies 2b (590 to 520 cm) with coarser sediments, lower OM and TOC/TN. Similar patterns of TOC and TS suggest that TS derives mainly from OM, however, a low TOC/TS and a good correlation between TOC/TS and Fe throughout lithofacies 2 suggest that TS is partly derived from pyrite (Wagner et al, 2006(Wagner et al, , 2009. Plant remains or carbonate fossils are not apparent in lithofacies 2a and 2b.…”

Section: Lithostratigraphy and Biogeochemistrymentioning

confidence: 79%

A Late Glacial to Holocene record of environmental change from Lake Dojran (Macedonia, Greece)

et al. 2013

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A Late Glacial to Holocene sediment sequence (Co1260, 717 cm) from Lake Dojran, located at the boarder of the F.Y.R. of Macedonia and Greece, has been investigated to provide information on climate variability in the Balkan region. A robust age-model was established from 13 radiocarbon ages, and indicates that the base of the sequence was deposited at ca. 12 500 cal yr BP, when the lake-level was low. Variations in sedimentological (H₂O, TOC, CaCO₃, TS, TOC/TN, TOC/TS, grain-size, XRF, δ¹⁸O_carb, δ¹³C_carb, δ¹³C_org) data were linked to hydro-acoustic data and indicate that warmer and more humid climate conditions characterised the remaining period of the Younger Dryas until the beginning of the Holocene. The Holocene exhibits significant environmental variations, including the 8.2 and 4.2 ka cooling events, the Medieval Warm Period and the Little Ice Age. Human induced erosion processes in the catchment of Lake Dojran intensified after 2800 cal yr BP

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“…The McMurdo Dry Valleys have probably had ice-free areas since at least the Mid-to-Late Miocene (up to approx. 14 Ma ;Boyer 1979;Prentice et al 1993), with large glacial lakes being present since the Last Glacial Maximum (LGM; Wagner et al 2006). In Prydz Bay, parts of the Larsemann Hills, less than 80 km away from the Rauer Islands and the Vestfold Hills, were ice-free during the LGM (Hodgson et al 2001).…”

Section: Discussionmentioning

confidence: 99%

Hidden levels of phylodiversity in Antarctic green algae: further evidence for the existence of glacial refugia

et al. 2009

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Recent data revealed that metazoans such as mites and springtails have persisted in Antarctica throughout several glacial -interglacial cycles, which contradicts the existing paradigm that terrestrial life was wiped out by successive glacial events and that the current inhabitants are recent colonizers. We used molecular phylogenetic techniques to study Antarctic microchlorophyte strains isolated from lacustrine habitats from maritime and continental Antarctica. The 14 distinct chlorophycean and trebouxiophycean lineages observed point to a wide phylogenetic diversity of apparently endemic Antarctic lineages at different taxonomic levels. This supports the hypothesis that long-term survival took place in glacial refugia, resulting in a specific Antarctic flora. The majority of the lineages have estimated ages between 17 and 84 Ma and probably diverged from their closest relatives around the time of the opening of Drake Passage (30 -45 Ma), while some lineages with longer branch lengths have estimated ages that precede the break-up of Gondwana. The variation in branch length and estimated age points to several independent but rare colonization events.

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Glacial and postglacial sedimentation in the Fryxell basin, Taylor Valley, southern Victoria Land, Antarctica

Cited by 44 publications

References 45 publications

The Saline Lakes of the McMurdo Dry Valleys, Antarctica

The Saline Lakes of the McMurdo Dry Valleys, Antarctica

A Late Glacial to Holocene record of environmental change from Lake Dojran (Macedonia, Greece)

Hidden levels of phylodiversity in Antarctic green algae: further evidence for the existence of glacial refugia

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