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  • 1
    Series available for loan
    Series available for loan
    Raised beaches of the Bunger Hills, Antarctica (1992)
    Canberra : Antarctic Div.
    Associated volumes
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    Call number: ZSP-123-136
    In: ANARE Reports
    Description / Table of Contents: The raised marine terraces of the icebound Bunger Oasis are described. The Holocene marine transgression entered the oasis before 7.7 ka BP and raised with marine limits 7.5± 1 m above the modern limit were formed throughout most of the oasis by 5.6-5 ka BP. All raised beaches recorded are of middle to late Holocene age and indicate an average isostatic uplift rate of 1.4 m/ka during this time. The raised beaches occur at similar altitudes to those at Vestfold Hills (up tp 10 m) but are lower than the beaches on the Windmill Islands (23 -30 m). Morphological evidence suggests that at Bunger Hills open water wave action may have been more important during middle than late Holocene times when strong sea ice pushing occured on most beaches. The last glaciation ice cover over the inner continental shelf at Bunger Hills appears to have been relatively thin, probably about 154 and 400 m in thickness. The similarity in maximum altitudes of raised beaches at Vestfold Hills suggests similiar ice thicknesses while the higher beaches at Windmill Islands suggests the ice may have been about 450 m thick. The evidence from the raised beaches in East Antarctica suggests that the expansion of continental ice was about 50% that envisaged by the Hughes et al. (1981) model derived from the Ross Sea. The ice sheet may not have extended to the edge of the continental shelf though more evidence is required from the shelf to determine its extent at maximum glaciation.
    Type of Medium: Series available for loan
    Pages: ii, 47 S. : Ill., graph. Darst., Kt.
    ISBN: 0642170169
    Series Statement: ANARE Reports 136
    Branch Library: AWI Library
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  • 2
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    (Table II) Geochemical composition of samples from Heidemann Valley trench, Antarctica
    PANGAEA
    Details
    Publication Date: 2023-05-12
    Keywords: Calcium; Chlorine; Conductivity of soil/sediment; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; EXC; Excavation; Heidemann_VT; Heidemann Valley, Vestfold Hills, Antarctica; Ion chromatography; Lithologic unit/sequence; Magnesium; pH; Potassium; Sodium; Sulfate
    Type: Dataset
    Format: text/tab-separated-values, 77 data points
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  • 3
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    (Table III) AMS radiocarbon ages of samples from Heidemann Valley trench, Antarctica
    PANGAEA
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    Publication Date: 2023-05-12
    Keywords: Age, 14C AMS; Age, dated; Age, dated standard deviation; Carbon-14, modern; Carbon-14, modern, standard deviation; Code; DEPTH, sediment/rock; EXC; Excavation; Heidemann_VT; Heidemann Valley, Vestfold Hills, Antarctica; Lithologic unit/sequence; Sample ID; δ13C
    Type: Dataset
    Format: text/tab-separated-values, 32 data points
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  • 4
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    (Table I) Grain size composition of samples from Heidemann Valley trench, Antarctica
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    Publication Date: 2023-05-12
    Keywords: Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; EXC; Excavation; Heidemann_VT; Heidemann Valley, Vestfold Hills, Antarctica; Lithologic unit/sequence; Sample amount; Size fraction 〈 0.063 mm, mud, silt+clay; Size fraction 〉 2 mm, gravel; Size fraction 0.125-0.063 mm, 3.0-4.0 phi, very fine sand; Size fraction 0.250-0.125 mm, 2.0-3.0 phi, fine sand; Size fraction 0.500-0.250 mm, 1.0-2.0 phi, medium sand; Size fraction 1.000-0.500 mm, 0.0-1.0 phi, coarse sand; Size fraction 2.0-1.0 mm
    Type: Dataset
    Format: text/tab-separated-values, 144 data points
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  • 5
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    (Table VII) Paleomagnetic characteristics of samples from Heidemann Valley trench, Antarctica
    PANGAEA
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    Publication Date: 2023-05-12
    Keywords: Core; Description; EXC; Excavation; Heidemann_VT; Heidemann Valley, Vestfold Hills, Antarctica; Inclination
    Type: Dataset
    Format: text/tab-separated-values, 30 data points
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  • 6
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    (Table IV) Degree of amino acid racemization (total acid hydrolysate) in fossil molluscs from Heidemann Valley trench, Antarctica
    PANGAEA
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    Publication Date: 2023-05-12
    Keywords: Alanine D/L ratio; Alanine D/L ratio, standard deviation; Aspartic acid D/L ratio; Aspartic acid D/L ratio, standard deviation; Code; DEPTH, sediment/rock; EXC; Excavation; Gas chromatography; Heidemann_VT; Heidemann Valley, Vestfold Hills, Antarctica; Leucine D/L ratio; Leucine D/L ratio, standard deviation; Number; Proline D/L ratio; Proline D/L ratio, standard deviation; Sample ID; Valine D/L ratio; Valine D/L ratio, standard deviation
    Type: Dataset
    Format: text/tab-separated-values, 50 data points
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  • 7
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    (Table V) Distribution of diatoms in samples from Heidemann Valley trench, Antarctica (2010)
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    Publication Date: 2023-07-10
    Keywords: Abundance estimate; Achnanthes brevipes; Actinocyclus ingens; Actinocyclus octonarius var. asteriscus; Actinocyclus sp.; Amphora sp.; Arachnoidiscus sp.; Cocconeis costata; Cocconeis fasciolata; Coscinodiscus spp.; Dactyliosolen antarcticus; Diatoms, resting spores; Diploneis bomboides; Diploneis sp.; Diploneis subovalis; Eucampia antarctica; Eunotia sp.; EXC; Excavation; Fragilariopsis kerguelensis; Fragilariopsis sp.; Fragilariopsis sublinearis; Grammatophora charcotti; Heidemann_VT; Heidemann Valley, Vestfold Hills, Antarctica; Hyalodiscus sp.; Indeterminata; Isthmia sp.; Melosira sol var. marginalis; Melosira sp.; Navicula sp.; Proboscia sp.; Radialiplicata sol; Rhaphoneis sp.; Rhizosolenia hebetata group; Rhizosolenia sp.; Rhizosolenia styliformis group; Sample ID; Sponge spiculae; Stellarima microtrias; Synedra sp.; Thalassiosira antarctica; Thalassiosira insigna; Thalassiosira oliverana; Thalassiosira spp.; Thalassiosira torokina; Thalassiothrix spp.; Trachyneis aspera
    Type: Dataset
    Format: text/tab-separated-values, 704 data points
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  • 8
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    Granulometry, geochemistry, amino acids, radiocarbon ages and paleomagnetics of samples from Heidemann Valley (2010)
    PANGAEA
    In:  Supplement to: Colhoun, Eric A; Kiernan, Kevin W; McConnell, Anne; Quilty, Patrick G; Fink, David; Murray-Wallace, Colin V; Whitehead, Jason M (2010): Late Pliocene age of glacial deposits at Heidemann Valley, East Antarctica: evidence for the last major glaciation in the Vestfold Hills. Antarctic Science, 22(1), 53-64, https://doi.org/10.1017/S0954102009990526
    Details
    Publication Date: 2023-12-13
    Description: A Pliocene (2.6-3.5 Ma) age is determined from glacial sediments studied in a 20m long, 4 m deep trench excavated in Heidemann Valley, Vestfold Hills, East Antarctica. The age determination is based on a combined study of amino acid racemization, diatoms, foraminifera, and magnetic polarity, and supports earlier estimates of the age of the sedimentary section; all are beyond 14C range. Four till units are recognized and documented, and 16 subunits are identified. All are ascribed to deposition during a Late Pliocene glaciation that was probably the last time the entire Vestfold Hills was covered by an enlarged East Antarctic Ice Sheet (EAIS). Evidence for other more recent glacial events of the 'Vestfold Glaciation' may have been due to lateral expansion of the Sorsdal Glacier and limited expansion of the icesheet margin during the Last Glacial Maximum rather than a major expansion of the EAIS. The deposit appears to correlate with a marine deposition event recorded in Ocean Drilling Program Site 1166 in Prydz Bay, possibly with the Bardin Bluffs Formation of the Prince Charles Mountains and with part of the time represented in the ANDRILL AND-1B core in the Ross Sea.
    Keywords: EXC; Excavation; Heidemann_VT; Heidemann Valley, Vestfold Hills, Antarctica; International Polar Year (2007-2008); IPY
    Type: Dataset
    Format: application/zip, 6 datasets
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  • 9
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    Charcoal records of two sediment cores off SW Africa (2012)
    PANGAEA
    In:  Supplement to: Daniau, Anne-Laure; Bartlein, Patrick J; Harrison, S P; Prentice, Iain Colin; Brewer, Simon; Friedlingstein, Pierre; Harrison-Prentice, T I; Inoue, J; Izumi, K; Marlon, Jennifer R; Mooney, Scott D; Power, Mitchell J; Stevenson, J; Tinner, Willy; Andric, M; Atanassova, J; Behling, Hermann; Black, M; Blarquez, O; Brown, K J; Carcaillet, C; Colhoun, Eric A; Colombaroli, Daniele; Davis, Basil A S; D'Costa, D; Dodson, John; Dupont, Lydie M; Eshetu, Z; Gavin, D G; Genries, A; Haberle, Simon G; Hallett, D J; Hope, Geoffrey; Horn, S P; Kassa, T G; Katamura, F; Kennedy, L M; Kershaw, A Peter; Krivonogov, S; Long, C; Magri, Donatella; Marinova, E; McKenzie, G Merna; Moreno, P I; Moss, Patrick T; Neumann, F H; Norstrom, E; Paitre, C; Rius, D; Roberts, Neil; Robinson, G S; Sasaki, N; Scott, Louis; Takahara, H; Terwilliger, V; Thevenon, Florian; Turner, R; Valsecchi, V G; Vannière, Boris; Walsh, M; Williams, N; Zhang, Yancheng (2012): Predictability of biomass burning in response to climate changes. Global Biogeochemical Cycles, 26(4), https://doi.org/10.1029/2011GB004249
    Details
    Publication Date: 2024-05-27
    Description: We analyze sedimentary charcoal records to show that the changes in fire regime over the past 21,000 yrs are predictable from changes in regional climates. Analyses of paleo- fire data show that fire increases monotonically with changes in temperature and peaks at intermediate moisture levels, and that temperature is quantitatively the most important driver of changes in biomass burning over the past 21,000 yrs. Given that a similar relationship between climate drivers and fire emerges from analyses of the interannual variability in biomass burning shown by remote-sensing observations of month-by-month burnt area between 1996 and 2008, our results signal a serious cause for concern in the face of continuing global warming.
    Keywords: Center for Marine Environmental Sciences; MARUM
    Type: Dataset
    Format: application/zip, 2 datasets
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  • 10
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    A community-based geological reconstruction of Antarctic Ice Sheet deglaciation since the Last Glacial Maximum (2014)
    Elsevier
    In:  EPIC3Quaternary Science Reviews, Elsevier, 100, pp. 1-9, ISSN: 0277-3791
    Details
    Publication Date: 2018-08-10
    Description: The Weddell Sea sector is one of the main formation sites for Antarctic Bottom Water and an outlet for about one fifth of Antarctica’s continental ice volume. Over the last few decades, studies on glacialegeological records in this sector have provided conflicting reconstructions of changes in ice-sheet extent and ice-sheet thickness since the Last Glacial Maximum (LGM at ca 23e19 calibrated kiloyears before present, cal ka BP). Terrestrial geomorphological records and exposure ages obtained from rocks in the hinterland of the Weddell Sea, ice-sheet thickness constraints from ice cores and some radiocarbon dates on offshore sediments were interpreted to indicate no significant ice thickening and locally restricted grounding-line advance at the LGM. Other marine geological and geophysical studies concluded that subglacial bedforms mapped on theWeddell Sea continental shelf, subglacial deposits and sediments over-compacted by overriding ice recovered in cores, and the few available radiocarbon ages from marine sediments are consistent with major ice-sheet advance at the LGM. Reflecting the geological interpretations, different icesheet models have reconstructed conflicting LGM ice-sheet configurations for the Weddell Sea sector. Consequently, the estimated contributions of ice-sheet build-up in the Weddell Sea sector to the LGM sealevel low-stand of w130 m vary considerably. In this paper, we summarise and review the geological records of past ice-sheet margins and past icesheet elevations in the Weddell Sea sector. We compile marine and terrestrial chronological data constraining former ice-sheet size, thereby highlighting different levels of certainty, and present two alternative scenarios of the LGM ice-sheet configuration, including time-slice reconstructions for post- LGM grounding-line retreat. Moreover, we discuss consistencies and possible reasons for inconsistencies between the various reconstructions and propose objectives for future research. The aim of our study is to provide two alternative interpretations of glacialegeological datasets on Antarctic Ice- Sheet History for the Weddell Sea sector, which can be utilised to test and improve numerical icesheet models
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , isiRev
    Format: application/pdf
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