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  • 2000-2004  (108)
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Year
  • 1
    Electronic Resource
    Electronic Resource
    Environmental history of the south-eastern South Atlantic since the Middle Miocene: evidence from the sedimentological records of ODP Sites 1088 and 1092 (2003)
    Oxford, UK : Blackwell Science Ltd
    Sedimentology 50 (2003), S. 0 
    Details
    ISSN: 1365-3091
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences
    Notes: During Leg 177 of the Ocean Drilling Program (ODP), well-preserved Middle Miocene to Pleistocene carbonate-rich sediment records were recovered on a north–south transect through the south-eastern Atlantic sector of the Southern Ocean at Site 1088 on the Agulhas Ridge and Site 1092 on Meteor Rise. Both sites were dominated by the deposition of calcareous nannofossil oozes through the Miocene, indicating low biological productivity in warm to temperate surface waters. A continuous increase in the proportions of foraminifera since the latest Miocene (6·5 Ma) points to enhanced nutrient supply, possibly related to the global ‘biogenic bloom’ event across the Miocene–Pliocene boundary. Since the Late Pliocene, different styles of biological productivity developed between the sites. Enhanced deposition of biosiliceous constituents at the southern Site 1092, particularly in the Early Pleistocene, is consistent with the formation of the Circum-Antarctic Opal Belt since 2·5 Ma in a setting near the Polar Front, whereas carbonate deposition still prevailed at the northern Site 1088 situated near the Subtropical Front. Clay-mineral tracers of water-mass advection together with the pattern of sedimentation rates and hiatuses reflect distinct pulses in the development of regional ocean circulation between 14 and 12 Ma, around 8 Ma and since 2·8 Ma. These pulses can be related to Antarctic ice-sheet extension that mediates the production and flow of southern source water, and stepwise increases in North Atlantic Deep Water production that drives global conveyor circulation. At Site 1088, illite chemistry and silt/clay ratios of the terrigenous sediment fraction reflect the history of terrestrial climate in southern Africa, with humid conditions prior to the Early Late Miocene (9·7 Ma), followed by a dry episode until 7·7 Ma. The latest Miocene and Early Pliocene were characterized by a humid episode until modern aridity was established in the Late Pliocene between 4·0 and 2·8 Ma. These climate changes were related to the latitudinal migration of climate belts in response to tectonically caused reorganizations in atmospheric and ocean circulation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1365-3091.2003.00562.x
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    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Palaeoclimate Message from the fish teeth (2004)
    [s.l.] : Nature Publishing Group
    Nature 430 (2004), S. 26-27 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] How did Earth's oceans behave during past episodes of long-term ‘green-house’ warmth? On page 65 of this issue, Deborah J. Thomas describes her investigations into the most recent episode of extreme global warmth, which occurred during the early Cenozoic era, between roughly 65 ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/430026a
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    Paper (German National Licenses)
    Fulltext
  • 3
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    Erste Ergebnisse zur spätquartären Umweltentwicklung im Werchojansk-Gebirge und seinem Vorland (2003)
    Selbstverl. der Alfred-Wegener-Stiftung
    In:  In: 21. Internationale Polartagung der Deutschen Gesellschaft für Polarforschung : Programm und Zusammenfassung der Tagungsbeiträge ; 17. - 22. März 2003, Kiel, Germany / Deutsche Gesellschaft für Polarforschung. Terra Nostra, 2003 (1). Selbstverl. der Alfred-Wegener-Stiftung, Bonn, pp. 41-42.
    Details
    Publication Date: 2015-03-26
    Type: Book chapter , NonPeerReviewed
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    OceanRep: Book chapter
  • 4
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    Sedimentology on surface samples from the Amundsen and Bellingshausen Seas (2003)
    PANGAEA
    In:  Supplement to: Hillenbrand, Claus-Dieter; Grobe, Hannes; Diekmann, Bernhard; Kuhn, Gerhard; Fütterer, Dieter K (2003): Distribution of clay minerals and proxies for productivity in surface sediments of the Bellingshausen and Amundsen seas (West Antarctica) - Relation to modern environmental conditions. Marine Geology, 193(3-4), 253-271, https://doi.org/10.1016/S0025-3227(02)00659-X
    Details
    Publication Date: 2023-06-27
    Description: Surface sediments from the Antarctic continental margin in the Bellingshausen and Amundsen seas (Pacific sector of the Southern Ocean) were investigated in order to decipher their capability to record modern environmental conditions. Spatial distribution of terrigenous sand and mud reflect regional differences in current-induced redeposition of glaciogenic debris. Clay mineral assemblages in the shelf sediments are controlled by the supply of terrigenous detritus from source rocks in the adjacent hinterland suggesting the occurrence of yet unknown sedimentary rocks in the hinterland of the Amundsen Sea. Clay mineral distribution on the continental rise in the Bellingshausen Sea points to the continuation of a bottom current from the Antarctic Peninsula rise to at least 94°W. Foraminifer-bearing and opal-poor deposits prevail on the continental margin in the western Bellingshausen Sea and the Amundsen Sea, whereas diatom-bearing and carbonate-free sediments characterize the eastern Bellingshausen Sea. Different modes of biological production, which were deduced from accumulation rates of biogenic barium during Marine Isotope Stage 1 and recent productivity measurements, obviously control the spatial pattern of opal- and carbonate-bearing sediments in the study area.
    Keywords: Adelaide Island; Amundsen Sea; Antarctic Peninsula; ANT-VI/2; ANT-XI/3; Anvers Island; Argentine Islands; AWI_Paleo; Barium; Barium, biogenic; Bellingshausen Sea; Calcium carbonate; Calculated; Carbon, organic, total; Chlorite; DEPTH, sediment/rock; Element analyser CHN, LECO; Elevation of event; Event label; Giant box corer; GKG; Grain size, sieving/settling tube; Illite; Kaolinite; Latitude of event; Longitude of event; Marguerite Bay; MUC; MultiCorer; Opal, auto analysis (Müller & Schneider, 1993); Opal, biogenic silica; Paleoenvironmental Reconstructions from Marine Sediments @ AWI; Polarstern; 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; PS2548-2; PS2550-2; 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; PS29/070; PS29/075; Sand; Silt; Size fraction 〈 0.002 mm, clay; Smectite; X-ray diffraction TEXTUR, clay fraction; X-ray fluorescence (XRF)
    Type: Dataset
    Format: text/tab-separated-values, 378 data points
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  • 5
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    Silt grain size distribution of sediment core PS1367-2 (2002)
    PANGAEA
    Details
    Publication Date: 2023-06-27
    Keywords: ANT-IV/3; AWI_Paleo; Camp Norway; DEPTH, sediment/rock; gcmd1; Grain size, SEDIGRAPH 5000; Gravity corer (Kiel type); Paleoenvironmental Reconstructions from Marine Sediments @ AWI; Polarstern; PS08; PS08/333; PS1367-2; Size fraction 10.309-9.618 µm, 6.6-6.7 phi; Size fraction 11.049-10.309 µm, 6.5-6.6 phi; Size fraction 11.842-11.049 µm, 6.4-6.5 phi; Size fraction 12.691-11.842 µm, 6.3-6.4 phi; Size fraction 13.602-12.691 µm, 6.2-6.3 phi; Size fraction 14.579-13.602 µm, 6.1-6.2 phi; Size fraction 15.625-14.579 µm, 6.0-6.1 phi; Size fraction 16.746-15.625 µm, 5.9-6.0 phi; Size fraction 17.948-16.746 µm, 5.8-5.9 phi; Size fraction 19.237-17.948 µm, 5.7-5.8 phi; Size fraction 2.093-1.953 µm, 8.9-9.0 phi; Size fraction 2.244-2.093 µm, 8.8-8.9 phi; Size fraction 2.405-2.244 µm, 8.7-8.8 phi; Size fraction 2.577-2.405 µm, 8.6-8.7 phi; Size fraction 2.762-2.577 µm, 8.5-8.6 phi; Size fraction 2.960-2.762 µm, 8.4-8.5 phi; Size fraction 20.617-19.237 µm, 5.6-5.7 phi; Size fraction 22.097-20.617 µm, 5.5-5.6 phi; Size fraction 23.683-22.097 µm, 5.4-5.5 phi; Size fraction 25.383-23.683 µm, 5.3-5.4 phi; Size fraction 27.205-25.383 µm, 5.2-5.3 phi; Size fraction 29.157-27.205 µm, 5.1-5.2 phi; Size fraction 3.173-2.960 µm, 8.3-8.4 phi; Size fraction 3.401-3.173 µm, 8.2-8.3 phi; Size fraction 3.645-3.401 µm, 8.1-8.2 phi; Size fraction 3.906-3.645 µm, 8.0-8.1 phi; Size fraction 31.250-29.157 µm, 5.0-5.1 phi; Size fraction 33.493-31.250 µm, 4.9-5.0 phi; Size fraction 35.897-33.493 µm, 4.8-4.9 phi; Size fraction 38.473-35.897 µm, 4.7-4.8 phi; Size fraction 4.187-3.906 µm, 7.9-8.0 phi; Size fraction 4.487-4.187 µm, 7.8-7.9 phi; Size fraction 4.809-4.487 µm, 7.7-7.8 phi; Size fraction 41.235-38.473 µm, 4.6-4.7 phi; Size fraction 44.194-41.235 µm, 4.5-4.6 phi; Size fraction 47.366-44.194 µm, 4.4-4.5 phi; Size fraction 5.154-4.809 µm, 7.6-7.7 phi; Size fraction 5.524-5.154 µm, 7.5-7.6 phi; Size fraction 5.921-5.524 µm, 7.4-7.5 phi; Size fraction 50.766-47.366 µm, 4.3-4.4 phi; Size fraction 54.409-50.766 µm, 4.2-4.3 phi; Size fraction 58.315-54.409 µm, 4.1-4.2 phi; Size fraction 6.346-5.921 µm, 7.3-7.4 phi; Size fraction 6.801-6.346 µm, 7.2-7.3 phi; Size fraction 62.500-58.315 µm, 4.0-4.1 phi; Size fraction 7.289-6.801 µm, 7.1-7.2 phi; Size fraction 7.813-7.289 µm, 7.0-7.1 phi; Size fraction 8.373-7.813 µm, 6.9-7.0 phi; Size fraction 8.974-8.373 µm, 6.8-6.9 phi; Size fraction 9.618-8.974 µm, 6.7-6.8 phi; SL
    Type: Dataset
    Format: text/tab-separated-values, 1250 data points
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  • 6
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    Silt grain size distribution of sediment core PS1790-1 (2002)
    PANGAEA
    Details
    Publication Date: 2023-06-27
    Keywords: ANT-VIII/5; AWI_Paleo; DEPTH, sediment/rock; gcmd1; Grain size, SEDIGRAPH 5000; Gravity corer (Kiel type); Lyddan Island; Paleoenvironmental Reconstructions from Marine Sediments @ AWI; Polarstern; PS16; PS16/410; PS1790-1; Size fraction 10.309-9.618 µm, 6.6-6.7 phi; Size fraction 11.049-10.309 µm, 6.5-6.6 phi; Size fraction 11.842-11.049 µm, 6.4-6.5 phi; Size fraction 12.691-11.842 µm, 6.3-6.4 phi; Size fraction 13.602-12.691 µm, 6.2-6.3 phi; Size fraction 14.579-13.602 µm, 6.1-6.2 phi; Size fraction 15.625-14.579 µm, 6.0-6.1 phi; Size fraction 16.746-15.625 µm, 5.9-6.0 phi; Size fraction 17.948-16.746 µm, 5.8-5.9 phi; Size fraction 19.237-17.948 µm, 5.7-5.8 phi; Size fraction 2.093-1.953 µm, 8.9-9.0 phi; Size fraction 2.244-2.093 µm, 8.8-8.9 phi; Size fraction 2.405-2.244 µm, 8.7-8.8 phi; Size fraction 2.577-2.405 µm, 8.6-8.7 phi; Size fraction 2.762-2.577 µm, 8.5-8.6 phi; Size fraction 2.960-2.762 µm, 8.4-8.5 phi; Size fraction 20.617-19.237 µm, 5.6-5.7 phi; Size fraction 22.097-20.617 µm, 5.5-5.6 phi; Size fraction 23.683-22.097 µm, 5.4-5.5 phi; Size fraction 25.383-23.683 µm, 5.3-5.4 phi; Size fraction 27.205-25.383 µm, 5.2-5.3 phi; Size fraction 29.157-27.205 µm, 5.1-5.2 phi; Size fraction 3.173-2.960 µm, 8.3-8.4 phi; Size fraction 3.401-3.173 µm, 8.2-8.3 phi; Size fraction 3.645-3.401 µm, 8.1-8.2 phi; Size fraction 3.906-3.645 µm, 8.0-8.1 phi; Size fraction 31.250-29.157 µm, 5.0-5.1 phi; Size fraction 33.493-31.250 µm, 4.9-5.0 phi; Size fraction 35.897-33.493 µm, 4.8-4.9 phi; Size fraction 38.473-35.897 µm, 4.7-4.8 phi; Size fraction 4.187-3.906 µm, 7.9-8.0 phi; Size fraction 4.487-4.187 µm, 7.8-7.9 phi; Size fraction 4.809-4.487 µm, 7.7-7.8 phi; Size fraction 41.235-38.473 µm, 4.6-4.7 phi; Size fraction 44.194-41.235 µm, 4.5-4.6 phi; Size fraction 47.366-44.194 µm, 4.4-4.5 phi; Size fraction 5.154-4.809 µm, 7.6-7.7 phi; Size fraction 5.524-5.154 µm, 7.5-7.6 phi; Size fraction 5.921-5.524 µm, 7.4-7.5 phi; Size fraction 50.766-47.366 µm, 4.3-4.4 phi; Size fraction 54.409-50.766 µm, 4.2-4.3 phi; Size fraction 58.315-54.409 µm, 4.1-4.2 phi; Size fraction 6.346-5.921 µm, 7.3-7.4 phi; Size fraction 6.801-6.346 µm, 7.2-7.3 phi; Size fraction 62.500-58.315 µm, 4.0-4.1 phi; Size fraction 7.289-6.801 µm, 7.1-7.2 phi; Size fraction 7.813-7.289 µm, 7.0-7.1 phi; Size fraction 8.373-7.813 µm, 6.9-7.0 phi; Size fraction 8.974-8.373 µm, 6.8-6.9 phi; Size fraction 9.618-8.974 µm, 6.7-6.8 phi; SL
    Type: Dataset
    Format: text/tab-separated-values, 2350 data points
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  • 7
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    Silt grain size distribution of sediment core PS1789-1 (2002)
    PANGAEA
    Details
    Publication Date: 2023-06-27
    Keywords: ANT-VIII/5; AWI_Paleo; DEPTH, sediment/rock; gcmd1; Grain size, SEDIGRAPH 5000; Gravity corer (Kiel type); Lyddan Island; Paleoenvironmental Reconstructions from Marine Sediments @ AWI; Polarstern; PS16; PS16/409; PS1789-1; Size fraction 10.309-9.618 µm, 6.6-6.7 phi; Size fraction 11.049-10.309 µm, 6.5-6.6 phi; Size fraction 11.842-11.049 µm, 6.4-6.5 phi; Size fraction 12.691-11.842 µm, 6.3-6.4 phi; Size fraction 13.602-12.691 µm, 6.2-6.3 phi; Size fraction 14.579-13.602 µm, 6.1-6.2 phi; Size fraction 15.625-14.579 µm, 6.0-6.1 phi; Size fraction 16.746-15.625 µm, 5.9-6.0 phi; Size fraction 17.948-16.746 µm, 5.8-5.9 phi; Size fraction 19.237-17.948 µm, 5.7-5.8 phi; Size fraction 2.093-1.953 µm, 8.9-9.0 phi; Size fraction 2.244-2.093 µm, 8.8-8.9 phi; Size fraction 2.405-2.244 µm, 8.7-8.8 phi; Size fraction 2.577-2.405 µm, 8.6-8.7 phi; Size fraction 2.762-2.577 µm, 8.5-8.6 phi; Size fraction 2.960-2.762 µm, 8.4-8.5 phi; Size fraction 20.617-19.237 µm, 5.6-5.7 phi; Size fraction 22.097-20.617 µm, 5.5-5.6 phi; Size fraction 23.683-22.097 µm, 5.4-5.5 phi; Size fraction 25.383-23.683 µm, 5.3-5.4 phi; Size fraction 27.205-25.383 µm, 5.2-5.3 phi; Size fraction 29.157-27.205 µm, 5.1-5.2 phi; Size fraction 3.173-2.960 µm, 8.3-8.4 phi; Size fraction 3.401-3.173 µm, 8.2-8.3 phi; Size fraction 3.645-3.401 µm, 8.1-8.2 phi; Size fraction 3.906-3.645 µm, 8.0-8.1 phi; Size fraction 31.250-29.157 µm, 5.0-5.1 phi; Size fraction 33.493-31.250 µm, 4.9-5.0 phi; Size fraction 35.897-33.493 µm, 4.8-4.9 phi; Size fraction 38.473-35.897 µm, 4.7-4.8 phi; Size fraction 4.187-3.906 µm, 7.9-8.0 phi; Size fraction 4.487-4.187 µm, 7.8-7.9 phi; Size fraction 4.809-4.487 µm, 7.7-7.8 phi; Size fraction 41.235-38.473 µm, 4.6-4.7 phi; Size fraction 44.194-41.235 µm, 4.5-4.6 phi; Size fraction 47.366-44.194 µm, 4.4-4.5 phi; Size fraction 5.154-4.809 µm, 7.6-7.7 phi; Size fraction 5.524-5.154 µm, 7.5-7.6 phi; Size fraction 5.921-5.524 µm, 7.4-7.5 phi; Size fraction 50.766-47.366 µm, 4.3-4.4 phi; Size fraction 54.409-50.766 µm, 4.2-4.3 phi; Size fraction 58.315-54.409 µm, 4.1-4.2 phi; Size fraction 6.346-5.921 µm, 7.3-7.4 phi; Size fraction 6.801-6.346 µm, 7.2-7.3 phi; Size fraction 62.500-58.315 µm, 4.0-4.1 phi; Size fraction 7.289-6.801 µm, 7.1-7.2 phi; Size fraction 7.813-7.289 µm, 7.0-7.1 phi; Size fraction 8.373-7.813 µm, 6.9-7.0 phi; Size fraction 8.974-8.373 µm, 6.8-6.9 phi; Size fraction 9.618-8.974 µm, 6.7-6.8 phi; SL
    Type: Dataset
    Format: text/tab-separated-values, 3900 data points
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  • 8
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    Stable isotope and carbon and opal analysis of sediment core PS2556-1 (2003)
    PANGAEA
    Details
    Publication Date: 2023-06-27
    Keywords: ANT-XI/3; AWI_Paleo; Bellingshausen Sea; Calcium carbonate; Carbon, organic, total; Carbon, total; DEPTH, sediment/rock; Element analyser CHN, LECO; Mass spectrometer Finnigan MAT 251; MUC; MultiCorer; Neogloboquadrina pachyderma sinistral, δ13C; Neogloboquadrina pachyderma sinistral, δ18O; Opal, auto analysis (Müller & Schneider, 1993); Opal, biogenic silica; Paleoenvironmental Reconstructions from Marine Sediments @ AWI; Polarstern; PS2556-1; PS29; PS29/075; Sulfur, total
    Type: Dataset
    Format: text/tab-separated-values, 105 data points
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  • 9
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    Stable isotope and carbon analysis of sediment core PS2543-3 (2003)
    PANGAEA
    Details
    Publication Date: 2023-06-27
    Keywords: ANT-XI/3; AWI_Paleo; Bellingshausen Sea; Calcium carbonate; Carbon, organic, total; Carbon, total; DEPTH, sediment/rock; Element analyser CHN, LECO; Mass spectrometer Finnigan MAT 251; MUC; MultiCorer; Neogloboquadrina pachyderma sinistral, δ13C; Neogloboquadrina pachyderma sinistral, δ18O; Paleoenvironmental Reconstructions from Marine Sediments @ AWI; Polarstern; PS2543-3; PS29; PS29/051; Sulfur, total
    Type: Dataset
    Format: text/tab-separated-values, 90 data points
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  • 10
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    Stable isotope and carbon analysis of sediment core PS2550-2 (2003)
    PANGAEA
    Details
    Publication Date: 2023-06-27
    Keywords: Amundsen Sea; ANT-XI/3; AWI_Paleo; Calcium carbonate; Carbon, organic, total; Carbon, total; DEPTH, sediment/rock; Element analyser CHN, LECO; Mass spectrometer Finnigan MAT 251; MUC; MultiCorer; Neogloboquadrina pachyderma sinistral, δ13C; Neogloboquadrina pachyderma sinistral, δ18O; Paleoenvironmental Reconstructions from Marine Sediments @ AWI; Polarstern; PS2550-2; PS29; PS29/066; Sulfur, total
    Type: Dataset
    Format: text/tab-separated-values, 98 data points
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