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Sediment record of the last 1.8 Ma in the Amundsen Sea

Authors
Publisher
PANGAEA
Publication Date
Identifiers
DOI: 10.1594/pangaea.711660
Keywords
  • <2 µM
  • >9 Phi
  • >2 Mm
  • Adelaide Island
  • Age Model
  • Age Model
  • Lithological Correlation
  • Amundsen Sea
  • Analysis Of >63 µM Fraction
  • Antarctic Peninsula
  • Ant-Vi/2
  • Ant-Xi/3
  • Anvers Island
  • Argentine Islands
  • Awi_Paleo
  • Ba Bio
  • Barium
  • Biogenic
  • Bellingshausen Sea
  • Brutto
  • Bsio2
  • C
  • Cf
  • Wuellerstorfi D13C
  • C
  • Cf
  • Wuellerstorfi D18O
  • Caco3
  • Calcium Carbonate
  • Calculated
  • Carbon
  • Organic
  • Total
  • Carbon
  • Total
  • Chl
  • Chlorite
  • Cibicidoides Cf
  • Wuellerstorfi
  • D13C
  • Cibicidoides Cf
  • Wuellerstorfi
  • D18O
  • Dbd
  • Density
  • Density
  • Dry Bulk
  • Density
  • Grain
  • Density
  • Wet Bulk
  • Density Grain
  • Dry M
  • Dry Mass
  • Dry Volume
  • Element Analyser Chn
  • Leco
  • Foraminifera
  • Planktic
  • Foram Plankt
  • Giant Box Corer
  • Grain Size
  • Sieving
  • Grain Size
  • Sieving/Settling Tube
  • Gravity Corer (Kiel Type)
  • Ice Rafted Debris
  • Ill
  • Illite
  • Ird
  • Ird-Counting (Grobe
  • 1987)
  • Kaolinite
  • Kln
  • Marguerite Bay
  • Mass
  • Brutto
  • Mass
  • Netto
  • Mass
  • Tara
  • Mass Spectrometer Finnigan Mat 251
  • Micronod
  • Micronodules
  • Minerals
  • Multicorer
  • N
  • Pachyderma S D13C
  • N
  • Pachyderma S D18O
  • Neogloboquadrina Pachyderma Sinistral
  • D13C
  • Neogloboquadrina Pachyderma Sinistral
  • D18O
  • Netto
  • Opal
  • Auto Analysis (Müller & Schneider
  • 1993)
  • Opal
  • Biogenic Silica
  • Paleoenvironmental Reconstructions From Marine Sediments @ Awi
  • Polarstern
  • Poros
  • Porosity
  • Ps12
  • Ps12/185
  • Ps12/186
  • Ps12/193
  • Ps12/194
  • Ps12/195
  • Ps12/196
  • Ps12/199
  • Ps12/200
  • Ps1554-1
  • Ps1555-1
  • Ps1557-1
  • Ps1558-1
  • Ps1559-1
  • Ps1560-1
  • Ps1563-1
  • Ps1564-1
  • Ps2522-1
  • Ps2524-1
  • Ps2525-1
  • Ps2526-1
  • Ps2527-1
  • Ps2528-1
  • Ps2529-1
  • Ps2531-1
  • Ps2532-2
  • Ps2533-1
  • Ps2534-2
  • Ps2537-1
  • Ps2538-1
  • Ps2539-2
  • Ps2540-1
  • Ps2541-2
  • Ps2542-1
  • Ps2543-3
  • Ps2544-1
  • Ps2545-1
  • Ps2546-1
  • Ps2547-2
  • Ps2547-3
  • Ps2548-2
  • Ps2550-2
  • Ps2551-1
  • Ps2553-2
  • Ps2556-1
  • Ps29
  • Ps29/010
  • Ps29/012
  • Ps29/016
  • Ps29/018
  • Ps29/021
  • Ps29/022
  • Ps29/024
  • Ps29/033
  • Ps29/039
  • Ps29/040
  • Ps29/042
  • Ps29/045
  • Ps29/046
  • Ps29/047
  • Ps29/048
  • Ps29/049
  • Ps29/050
  • Ps29/051
  • Ps29/054
  • Ps29/057
  • Ps29/062
  • Ps29/063
  • Ps29/064
  • Ps29/066
  • Ps29/067
  • Ps29/070
  • Ps29/075
  • Pycnometer (Micromeritics)
  • Rad
  • Radiolarians
  • Rock Fragm
  • Rock Fragments
  • Rock Fragments Per Unit Mass
  • Sample Mass
  • Samp M
  • Sand
  • Silicon Cycling In The World Ocean
  • Silt
  • Sinops
  • Size Fraction < 0
  • 002 Mm
  • > 9 Phi
  • Clay
  • Size Fraction > 2 Mm
  • Gravel
  • Sme
  • Smectite
  • Sulphur
  • Total
  • Tara
  • Tc
  • Toc
  • Ts
  • Vol
  • Volcanic Glass
  • Volc Glass
  • Volume
  • Water Content
  • Wet Mass
  • Brutto
  • Water Content Of Dry Mass
  • Water Content Of Wet Mass
  • Water Dm
  • Water Wm
  • Water Wm Brutto
  • Wbd
  • Wild M7A/S Stereomicroscope
  • Incident Light
  • X-Ray Diffraction Textur
  • Clay Fraction
  • X-Ray Fluorescence (Xrf)

Abstract

Records of glaciomarine deposition recovered from the West Antarctic continental margin in the Amundsen Sea allow the reconstruction of the behaviour of the West Antarctic Ice Sheet (WAIS) in response to the natural climatic changes of the last 1.8 million years. Contents of gravel-sized and lithogenic components represent the input and redeposition of glaciogenic debris, whereas variations in the proportions of the calcareous sediment fraction reflect palaeoproductivity changes. All proxies, which are regarded as sensitive to a WAIS collapse, changed markedly during the global climatic cycles, but do not confirm a complete disintegration of the WAIS during the Pleistocene.

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