ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
Collection
Keywords
Publisher
Language
Years
  • 1
    facet.materialart.
    Unknown
    The Holocene environmental history of Lake Hoare, Taylor Valley, Antarctica, reconstructed from sediment cores (2011)
    Cambridge University Press
    Details
    Publication Date: 2011-02-16
    Description: Up to 2.3 m long sediment sequences were recovered from the deepest part of Lake Hoare in Taylor Valley, southern Victoria Land, Antarctica. Sedimentological, biogeochemical, and mineralogical analyses revealed a high spatial variability of these parameters in Lake Hoare. Five distinct lithological units were recognized. Radiocarbon dating of bulk organic carbon samples from the sediment sequences yielded apparently too old ages and significant age reversals, which prevented the establishment of reliable age-depth models. However, cross correlation of the sedimentary characteristics with those of sediment records from neighbouring Lake Fryxell indicates that the lowermost two units of the Lake Hoare sediment sequences were probably deposited during the final phase of proglacial Lake Washburn, which occupied Taylor Valley during the late Pleistocene and early Holocene. High amounts of angular gravel and the absence of fine-grained material imply a complete desiccation with subaerial conditions in the Lake Hoare basin in the middle of the Holocene. The late Holocene (〈 c. 3300 calendar yr bp) is characterized by the establishment of environmental conditions similar to those existing today. A late Holocene desiccation event, such as proposed in former studies, is not indicated in the sediment sequences recovered.
    Print ISSN: 0954-1020
    Electronic ISSN: 1365-2079
    Topics: Biology , Geography , Geosciences
    Published by Cambridge University Press
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 2
    facet.materialart.
    Unknown
    Palaeoenvironmental implications derived from a piston core from east lobe Bonney, Taylor Valley, Antarctica (2010)
    Cambridge University Press
    Details
    Publication Date: 2010-08-12
    Description: A 270 cm long sediment sequence was recovered with a piston corer from east lobe Bonney, Taylor Valley, Antarctica, and characterized according to its sedimentological, mineralogical, and geochemical properties. It is the first record of such length recovered from east lobe Bonney. The sediment core is mainly composed of halite crystals of different sizes, water, and a relatively low and stable proportion of clastic particles. Although the sediment surface was probably disturbed by the coring process and absence or low contents of organic material or carbonates hampers the establishment of a robust chronology by radiocarbon dating, the core probably contains at least several hundred years of information about the history of the lake and the Bonney basin. Variations in halite crystal sizes and amount as well as variations in the composition of clastic material can be related to past lake level changes and evaporation cycles.
    Print ISSN: 0954-1020
    Electronic ISSN: 1365-2079
    Topics: Biology , Geography , Geosciences
    Published by Cambridge University Press
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 3
    facet.materialart.
    Unknown
    14C age determination on East Lake Bonney sediment core Lz1023-1 (2009)
    PANGAEA
    Details
    Publication Date: 2023-06-27
    Keywords: Age, 14C AMS; Age, dated; Age, dated material; Age, dated standard deviation; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; Isotope ratio mass spectrometry; Lake Bonney, East Antarctica; Lz1023-1; Mass; PC; Piston corer; Sample code/label; Sampling/drilling in lake; TaylorValley2002; δ13C
    Type: Dataset
    Format: text/tab-separated-values, 16 data points
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    DATA PANGAEA
  • 4
    facet.materialart.
    Unknown
    Table 1. Radiocarbon dates of carbonates from a bulk sediment sample of core Lz1023, East Lake Bonney (2011)
    PANGAEA
    Details
    Publication Date: 2023-06-27
    Keywords: Age, 14C AMS; Age, dated; Age, dated material; Age, dated standard deviation; Carbon mass; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; Lake Bonney, East Antarctica; Lz1023-1; PC; Piston corer; Sample code/label; Sampling/drilling in lake; TaylorValley2002; δ13C
    Type: Dataset
    Format: text/tab-separated-values, 16 data points
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    DATA PANGAEA
  • 5
    facet.materialart.
    Unknown
    Sedimentology on East Lake Bonney core Lz1023-1 (2009)
    PANGAEA
    Details
    Publication Date: 2023-06-27
    Keywords: Atomic absorption spectrometry (AAS), AA6800 (Shimadzu Corp.); Calculated; Calculated from weight/volume; Carbon, inorganic, total; Carbon, organic, total; Carbon, total; Carbon and nitrogen and sulfur (CNS) isotope element analyzer, Elementar, Vario EL III; Chlorine; Clastics; Counting; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; DIMATOC 100 analyzer (Dimatec Corp.); Grain size, CILAS 1180 Laser Particle Analyser; Ion chromatograph, Dionex Corporation, DX-120; Lake Bonney, East Antarctica; Lz1023-1; Nitrogen, total; PC; Piston corer; Potassium; Salt content; Sampling/drilling in lake; Size fraction 〈 0.002 mm, clay; Size fraction 〉 0.063 mm, sand; Size fraction 〉 2 mm, gravel; Size fraction 0.063-0.002 mm, silt, mud; Sodium; Sodium/Chlorine ratio; Sulfur, total; TaylorValley2002; Water content, wet mass
    Type: Dataset
    Format: text/tab-separated-values, 653 data points
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    DATA PANGAEA
  • 6
    facet.materialart.
    Unknown
    Fig. 3. Lithology and sedimentology on profile Lz1020 (2012)
    PANGAEA
    Details
    Publication Date: 2023-06-27
    Keywords: Amphibole/standard ratio; Carbon, inorganic, total; Carbon, organic, total; COMPCORE; Composite Core; Core; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; Feldspar/standard ratio; Lake Hoare, Taylor Valley, East Antarctica; Lz1020; Nitrogen, total; Pyroxene/standard ratio; Quartz/standard ratio; Sampling/drilling in lake; Sand; Silt; Size fraction 〈 0.002 mm, clay; Size fraction 〉 2 mm, gravel; Sulfur, total; TaylorValley2002; Total dissolved solids, corrected; Volcanic glass
    Type: Dataset
    Format: text/tab-separated-values, 1529 data points
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    DATA PANGAEA
  • 7
    facet.materialart.
    Unknown
    Table I. Radiocarbon dates of the humic acid free fraction (HAF), and the humic acid fraction (HA) from bulk sediment samples of cores Lz1020, Lake Hoare (2011)
    PANGAEA
    Details
    Publication Date: 2023-06-27
    Keywords: Age, 14C AMS; Age, dated; Age, dated material; Age, dated standard deviation; Carbon mass; COMPCORE; Composite Core; Core section label; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; Lake Hoare, Taylor Valley, East Antarctica; Lz1020; Sample code/label; Sampling/drilling in lake; TaylorValley2002; δ13C
    Type: Dataset
    Format: text/tab-separated-values, 235 data points
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    DATA PANGAEA
  • 8
    facet.materialart.
    Unknown
    Sedimentology and age on profile Lz1023 (2011)
    PANGAEA
    In:  Supplement to: Wagner, Bernd; Ortlepp, Sabrina; Kenig, Fabien; Doran, Peter T; Melles, Martin (2010): Palaeoenvironmental implications derived from a piston core from east lobe Bonney, Taylor Valley, Antarctica. Antarctic Science, 22(5), 522-530, https://doi.org/10.1017/S0954102010000556
    Details
    Publication Date: 2023-10-28
    Description: A 270 cm long sediment sequence was recovered with a piston corer from east lobe Bonney, Taylor Valley, Antarctica, and characterized according to its sedimentological, mineralogical, and geochemical properties. It is the first record of such length recovered from east lobe Bonney. The sediment core is mainly composed of halite crystals of different sizes, water, and a relatively low and stable proportion of clastic particles. Although the sediment surface was probably disturbed by the coring process and absence or low contents of organic material or carbonates hampers the establishment of a robust chronology by radiocarbon dating, the core probably contains at least several hundred years of information about the history of the lake and the Bonney basin. Variations in halite crystal sizes and amount as well as variations in the composition of clastic material can be related to past lake level changes and evaporation cycles.
    Keywords: Lake Bonney, East Antarctica; Lz1023-1; PC; Piston corer; Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas; Sampling/drilling in lake; SPP1158; TaylorValley2002
    Type: Dataset
    Format: application/zip, 2 datasets
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    DATA PANGAEA
  • 9
    facet.materialart.
    Unknown
    Age determination and sedimentology on profile Lz1020 from Lake Hoare, Antarctica (2012)
    PANGAEA
    In:  Supplement to: Wagner, Bernd; Ortlepp, Sabrina; Doran, Peter T; Kenig, Fabien; Melles, Martin; Burkemper, Andy (2011): The Holocene environmental history of Lake Hoare, Taylor Valley, Antarctica, reconstructed from sediment cores. Antarctic Science, 23(3), 307-319, https://doi.org/10.1017/S0954102011000125
    Details
    Publication Date: 2023-10-28
    Description: Up to 2.3 m long sediment sequences were recovered from the deepest part of Lake Hoare in Taylor Valley, southern Victoria Land, Antarctica. Sedimentological, biogeochemical, and mineralogical analyses revealed a high spatial variability of these parameters in Lake Hoare. Five distinct lithological units were recognized. Radiocarbon dating of bulk organic carbon samples from the sediment sequences yielded apparently too old ages and significant age reversals, which prevented the establishment of reliable age-depth models. However, cross correlation of the sedimentary characteristics with those of sediment records from neighbouring Lake Fryxell indicates that the lowermost two units of the Lake Hoare sediment sequences were probably deposited during the final phase of proglacial Lake Washburn, which occupied Taylor Valley during the late Pleistocene and early Holocene. High amounts of angular gravel and the absence of fine-grained material imply a complete desiccation with subaerial conditions in the Lake Hoare basin in the middle of the Holocene. The late Holocene (〈 c. 3300 calendar yr BP) is characterized by the establishment of environmental conditions similar to those existing today. A late Holocene desiccation event, such as proposed in former studies, is not indicated in the sediment sequences recovered.
    Keywords: COMPCORE; Composite Core; Lake Hoare, Taylor Valley, East Antarctica; Lz1020; Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas; Sampling/drilling in lake; SPP1158; TaylorValley2002
    Type: Dataset
    Format: application/zip, 2 datasets
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    DATA PANGAEA
  • 10
    facet.materialart.
    Unknown
    Late Quaternary environmental history of Taylor Valley, southern Victoria Land, Antarctica, reconstructed by a multidisciplinary study of lake sediments (2010)
    Univ. Köln
    Details
    Publication Date: 2021-03-29
    Description: In the unglaciated areas of Antarctica, lake sediments act as archives of the regional environmental and climatic history. In most cases, the records are restricted to the Holocene. Amongst the few exceptions are lakes in the McMurdo Dry Valleys, southern Victoria Land, which are known to have remained mostly ice-free during the Last Glacial Maximum. Within the scope of an U.S.-American-German expedition in austral summer 2002/2003, several sediment cores were recovered from the three major lakes in the Taylor Valley: lakes Fryxell, Hoare, and Bonney. In order to reconstruct the late Quaternary regional environmental and climate history, sedimentological, biogeochemical, mineralogical, and chronological investigations were conducted on the sediment sequences recovered from Lake Hoare (core Lz1020) and East Lake Bonney (core Lz1023) within the scope of this thesis. Sediment cores from Lake Hoare with a maximum length of 2.3 m mainly consist of coarse-grained material and penetrate back into the late Weichselian, when Taylor Valley was occupied by the large proglacial Lake Washburn. This lake was dammed by the advanced Ross Sea ice sheet at the valley outlet and was mainly fed by meltwater of the ice sheet. During the Pleistocene-Holocene transition, enhanced evaporation led to a significant lake level drop of Lake Washburn ...
    Description: thesis
    Keywords: 551 ; 550 ; TWC 500 ; VDI 200 ; VAU 000 ; VEY 200 ; VBN 500 ; VBL 500 ; Klimaschwankungen und Klimaänderungen im Quartär ; Quartär ; Paläolimnologie {Geologie} ; Antarktis {Geologie} ; Geochronologie einzelner Regionen im allgemeinen ; Geologische Bohrungen in einzelnen Regionen
    Language: English
    Type: monograph , publishedVersion
    Format: 121 S.
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    CITATION GEO-LEO
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...