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  • 2015-2019  (5,900)
  • 2005-2009  (64)
  • 1995-1999  (777)
  • 1945-1949  (3)
Collection
Keywords
Publisher
Language
Years
Year
  • 1
    facet.materialart.
    Unknown
    Report and Preliminary Results of the METEOR-Cruise M 34/4, Recife-Bridgetown, 19.3.-15.4.1996 (1996)
    Bremen
    Details Availability
    Call number: ZSP 16697-0009
    Pages: 105 S. : Abb. ; 30 cm
    ISSN: 0931-0800
    Series Statement: Berichte aus dem Fachbereich Geowissenschaften der Universität Bremen 80
    Branch Library: AWI Library
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  • 2
    Monograph available for loan
    Monograph available for loan
    The mesozoic volcanic-intrusive complexes and their metallogenic relations in East China (1996)
    Beijing : Science Press
    Details Availability
    Call number: M 98.0450
    Type of Medium: Monograph available for loan
    Pages: vii, 159 S.
    ISBN: 7030050447
    Series Statement: Solid earth sciences research in China
    Classification:
    Regional Geology
    Language: English
    Location: Upper compact magazine
    Branch Library: GFZ Library
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  • 3
    facet.materialart.
    Unknown
    Late Serpukhovian Foraminifers Near the Mississippian-pennsylvanian Boundary At South Syncline Ridge, Southern Nevada, Usa: Implications For Correlation (2019)
    Cushman Foundation for Foraminiferal Research
    Details
    Publication Date: 2019
    Description: 〈span〉〈div〉Abstract〈/div〉A few, thin, Mississippian siliciclastic limestone beds, interbedded with ammonoid (uppermost 〈span〉Eumorphoceras〈/span〉 Zone)-bearing shales within the South Syncline Ridge section on the Nuclear Test Site in southern Nevada, contain an abundant, low-diversity assemblage of late Serpukhovian/late Chesterian calcareous foraminifers dominated by the archaediscaceans 〈span〉Neoarchaediscus altiluminis〈/span〉, 〈span〉Brenckleina rugosa〈/span〉, 〈span〉Eosigmoilina robertsoni〈/span〉, and 〈span〉Betpakodiscus〈/span〉 of the group 〈span〉B〈/span〉. 〈span〉attenuatus〈/span〉. These limestone beds were deposited in a shallow-water, clastic facies of the Scotty Wash Formation and, based on common conodont occurrences, correlate southeast to the Bird Spring Formation below the Mississippian-Pennsylvanian GSSP at Arrow Canyon, Nevada. The South Syncline Ridge foraminifers are comparable to those found in coeval beds at Arrow Canyon and represent the only other known foraminiferal assemblage to exist in association with uppermost 〈span〉Eumorphoceras〈/span〉 Zone ammonoids in North America outside of Arkansas in the southern Midcontinent. Reconciliation of regional conodont and ammonoid zonations shows that the range of eosigmoiline foraminifers (〈span〉E〈/span〉. 〈span〉robertsoni〈/span〉 and 〈span〉B〈/span〉. 〈span〉rugosa〈/span〉), now generally considered an upper Serpukhovian index, extends from a position either just below or at the lower-upper boundary of the Serpukhovian Stage into the lower part of the Bashkirian Stage in North America; their upper range falls within the lower part of the 〈span〉Homoceras〈/span〉 ammonoid zone beginning in the upper part of the Serpukhovian Stage. Discussion of the foraminiferal taxa includes support for retaining the genus 〈span〉Betpakodiscus〈/span〉 rather than synonymizing it under 〈span〉Tubispirodiscus〈/span〉, as proposed by some specialists during the past few years.〈/span〉
    Print ISSN: 0096-1191
    Electronic ISSN: 1943-264X
    Topics: Geosciences
    Published by Cushman Foundation for Foraminiferal Research
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  • 4
    facet.materialart.
    Unknown
    The State of Platinum in Pyrite Studied by X-Ray Absorption Spectroscopy of Synthetic Crystals (2019)
    Society of Economic Geologists (SEG)
    Details
    Publication Date: 2019
    Description: 〈span〉〈div〉Abstract〈/div〉Pyrite (FeS〈sub〉2〈/sub〉) is a typical container of Pt in ores of magmatic and hydrothermal origin and in some carbonrich ores of sedimentary-diagenetic origin. Knowledge of the state of Pt disseminated in the matrix of pyrite, including local atomic environment (type of atoms in the nearest and distant coordination shells, coordination numbers, interatomic distances) and oxidation state, is necessary for physical-chemical modeling of platinum group element mineralization and for the improvement of Pt ore extraction and processing technologies. Here we report results of an investigation of local atomic structure of synthetic Pt-bearing pyrites by means of X-ray absorption spectroscopy (XAS). Synthesis experiments, performed at 580° and 590°C in a Pt-saturated system by means of salt-flux method, yielded crystals of pyrite with concentrations of Pt up to 4 wt %. Scanning electron microscopy (SEM) and electron probe microanalysis (EPMA) showed that the distribution of Pt within the pyrite grains is of zonal character, but within the distinct zones Pt is distributed homogeneously. Negative correlation between the concentrations of Pt and Fe was observed in the synthesized pyrite grains. The slope of the correlation line corresponds to the formation of the solid solution in the Pt-Fe-S system and/or to the formation of PtS〈sub〉2〈/sub〉. The XAS experiments revealed the existence of two forms of Pt in pyrite. The main form is the solid solution Pt(IV), which isomorphically substitutes for Fe. The Pt-S distance in pyrite is ~0.1 Å longer than that of Fe-S in pure pyrite. The distortion of the pyrite crystal structure disappears at 〈span〉R〈/span〉 〉2.5 Å. The second Pt-rich form was identified by means of high-resolution transmission electron microscopy (HRTEM) as nanosized inclusions of PtS〈sub〉2〈/sub〉. Heating experiments with in situ registration of X-ray absorption spectra resulted in partial decomposition (dissolution) of PtS〈sub〉2〈/sub〉 nanosized inclusions with the formation of the solid solution (Fe〈sub〉1–x〈/sub〉Pt〈sub〉x〈/sub〉)S〈sub〉2〈/sub〉. Therefore, the PtS〈sub〉2〈/sub〉 nanosized particles can be considered as a quench product. Our data demonstrate that both Pt solid solution and PtS〈sub〉2〈/sub〉 nanosized inclusions (at high Pt content) can exist in natural Pt-bearing pyrites.〈/span〉
    Print ISSN: 0361-0128
    Electronic ISSN: 1554-0774
    Topics: Geosciences
    Published by Society of Economic Geologists (SEG)
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  • 5
    facet.materialart.
    Unknown
    Physical oceanography from Seaglider mission CNCY201614913 (2017)
    PANGAEA
    In:  Oceanography Center, University of Cyprus, Nicosia
    Details
    Publication Date: 2023-01-13
    Description: The aim of CNCY201614913 mission presented here (part of the CRELEV-2016 experiment) was to focus on the transport and convection processes occurring in the area of the Eastern Mediterranean Sea. These processes are important for the nutrients injection in the surface waters, the consequent phytoplankton growth and fisheries. The main objective of the CRELEV-2016 cruise was to examine a comprehensive set of parameters in the Eastern Mediterranean Sea in order to quantify variability and trends of physical and biogeochemical properties. These data will be used to better understand the role of natural and anthropogenic pressures. The data were collected with glider SG-149, after being launched from Paphos on 23 March, 2016, and recovered by the R/V Aegaeo near Crete on 6 June 2016. Parameters measured include pressure, temperature, conductivity, dissolved oxygen, optical backscatter at 470 nm, 700 nm, and optical fluorescence at 695 nm at depths up to 1000 m.
    Keywords: Calculated from pressure; CNCY201614913; CNCY201614913_001; CNCY201614913_002; CNCY201614913_003; CNCY201614913_004; CNCY201614913_005; CNCY201614913_006; CNCY201614913_007; CNCY201614913_008; CNCY201614913_009; CNCY201614913_010; CNCY201614913_011; CNCY201614913_012; CNCY201614913_013; CNCY201614913_014; CNCY201614913_015; CNCY201614913_016; CNCY201614913_017; CNCY201614913_018; CNCY201614913_019; CNCY201614913_020; CNCY201614913_021; CNCY201614913_022; CNCY201614913_023; CNCY201614913_024; CNCY201614913_025; CNCY201614913_026; CNCY201614913_027; CNCY201614913_028; CNCY201614913_029; CNCY201614913_030; CNCY201614913_031; CNCY201614913_032; CNCY201614913_033; CNCY201614913_034; CNCY201614913_035; CNCY201614913_036; CNCY201614913_037; CNCY201614913_038; CNCY201614913_039; CNCY201614913_040; CNCY201614913_041; CNCY201614913_042; CNCY201614913_043; CNCY201614913_044; CNCY201614913_045; CNCY201614913_046; CNCY201614913_047; CNCY201614913_048; CNCY201614913_049; CNCY201614913_050; CNCY201614913_051; CNCY201614913_052; CNCY201614913_053; CNCY201614913_054; CNCY201614913_055; CNCY201614913_056; CNCY201614913_057; CNCY201614913_058; CNCY201614913_059; CNCY201614913_060; CNCY201614913_061; CNCY201614913_062; CNCY201614913_063; CNCY201614913_064; CNCY201614913_065; CNCY201614913_066; CNCY201614913_067; CNCY201614913_068; CNCY201614913_069; CNCY201614913_070; CNCY201614913_071; CNCY201614913_072; CNCY201614913_073; CNCY201614913_074; CNCY201614913_075; CNCY201614913_076; CNCY201614913_077; CNCY201614913_078; CNCY201614913_079; CNCY201614913_080; CNCY201614913_081; CNCY201614913_082; CNCY201614913_083; CNCY201614913_084; CNCY201614913_085; CNCY201614913_086; CNCY201614913_087; CNCY201614913_088; CNCY201614913_089; CNCY201614913_090; CNCY201614913_091; CNCY201614913_092; CNCY201614913_093; CNCY201614913_094; CNCY201614913_095; CNCY201614913_096; CNCY201614913_097; CNCY201614913_098; CNCY201614913_099; CNCY201614913_100; CNCY201614913_101; CNCY201614913_102; CNCY201614913_103; CNCY201614913_104; CNCY201614913_105; CNCY201614913_106; CNCY201614913_107; CNCY201614913_108; CNCY201614913_109; CNCY201614913_110; CNCY201614913_111; CNCY201614913_112; CNCY201614913_113; CNCY201614913_114; CNCY201614913_115; CNCY201614913_116; CNCY201614913_120; CNCY201614913_121; CNCY201614913_122; CNCY201614913_123; CNCY201614913_124; CNCY201614913_125; CNCY201614913_126; CNCY201614913_127; CNCY201614913_128; CNCY201614913_129; CNCY201614913_130; CNCY201614913_131; CNCY201614913_132; CNCY201614913_133; CNCY201614913_134; CNCY201614913_135; CNCY201614913_136; CNCY201614913_137; CNCY201614913_138; CNCY201614913_139; CNCY201614913_140; CNCY201614913_141; CNCY201614913_142; CNCY201614913_143; CNCY201614913_144; CNCY201614913_145; CNCY201614913_146; CNCY201614913_147; CNCY201614913_148; CNCY201614913_149; CNCY201614913_150; CNCY201614913_151; CNCY201614913_152; CNCY201614913_153; CNCY201614913_154; CNCY201614913_155; CNCY201614913_156; CNCY201614913_157; CNCY201614913_158; CNCY201614913_159; CNCY201614913_160; CNCY201614913_161; CNCY201614913_162; CNCY201614913_163; CNCY201614913_164; CNCY201614913_165; CNCY201614913_166; CNCY201614913_167; CNCY201614913_168; CNCY201614913_169; CNCY201614913_170; CNCY201614913_171; CNCY201614913_172; CNCY201614913_173; CNCY201614913_174; CNCY201614913_175; CNCY201614913_176; CNCY201614913_177; CNCY201614913_178; CNCY201614913_179; CNCY201614913_180; CNCY201614913_181; CNCY201614913_182; CNCY201614913_183; CNCY201614913_184; CNCY201614913_185; CNCY201614913_186; CNCY201614913_187; CNCY201614913_188; CNCY201614913_189; CNCY201614913_190; CNCY201614913_191; CNCY201614913_192; CNCY201614913_193; CNCY201614913_194; CNCY201614913_195; CNCY201614913_196; CNCY201614913_197; CNCY201614913_198; CNCY201614913_199; CNCY201614913_200; CNCY201614913_201; CNCY201614913_202; CNCY201614913_203; CNCY201614913_204; CNCY201614913_205; CNCY201614913_206; CNCY201614913_207; CNCY201614913_208; CNCY201614913_209; CNCY201614913_210; CNCY201614913_211; CNCY201614913_212; CNCY201614913_213; CNCY201614913_214; CNCY201614913_215; CNCY201614913_216; CNCY201614913_217; CNCY201614913_218; CNCY201614913_219; CNCY201614913_220; CNCY201614913_221; CNCY201614913_222; CNCY201614913_223; CNCY201614913_224; CNCY201614913_225; CNCY201614913_226; CNCY201614913_227; CNCY201614913_228; CNCY201614913_229; CNCY201614913_230; CNCY201614913_231; CNCY201614913_232; CNCY201614913_233; CNCY201614913_234; CNCY201614913_235; CNCY201614913_236; CNCY201614913_237; CNCY201614913_238; CNCY201614913_239; CNCY201614913_240; CNCY201614913_241; CNCY201614913_242; CNCY201614913_243; CNCY201614913_244; CNCY201614913_245; CNCY201614913_246; CNCY201614913_247; CNCY201614913_248; CNCY201614913_249; CNCY201614913_250; CNCY201614913_251; CNCY201614913_252; CNCY201614913_253; CNCY201614913_254; CNCY201614913_255; CNCY201614913_256; CNCY201614913_257; CNCY201614913_258; CNCY201614913_259; CNCY201614913_260; CNCY201614913_261; CNCY201614913_262; CNCY201614913_263; CNCY201614913_264; CNCY201614913_265; CNCY201614913_266; CNCY201614913_267; CNCY201614913_268; CNCY201614913_269; CNCY201614913_270; CNCY201614913_271; CNCY201614913_272; CNCY201614913_273; CNCY201614913_274; CNCY201614913_275; CNCY201614913_276; CNCY201614913_277; CNCY201614913_278; CNCY201614913_279; CNCY201614913_280; CNCY201614913_281; CNCY201614913_282; CNCY201614913_283; CNCY201614913_284; CNCY201614913_285; Date/Time of event; DEPTH, water; Event label; GLD; Glider; Latitude of event; Longitude of event; Mediterranean Sea, Eastern Basin; Oxygen; Pressure, water; Salinity; Seaglider, SG-149; SG149_Mission_13; Temperature, water
    Type: Dataset
    Format: text/tab-separated-values, 391876 data points
    Location Call Number Expected Availability
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    DATA PANGAEA
  • 6
    facet.materialart.
    Unknown
    Physical oceanography from Seaglider mission CNCY201614913, links to files in NetCDF format (2017)
    PANGAEA
    In:  Oceanography Center, University of Cyprus, Nicosia
    Details
    Publication Date: 2023-02-18
    Keywords: CNCY201614913; CNCY201614913_001; CNCY201614913_002; CNCY201614913_003; CNCY201614913_004; CNCY201614913_005; CNCY201614913_006; CNCY201614913_007; CNCY201614913_008; CNCY201614913_009; CNCY201614913_010; CNCY201614913_011; CNCY201614913_012; CNCY201614913_013; CNCY201614913_014; CNCY201614913_015; CNCY201614913_016; CNCY201614913_017; CNCY201614913_018; CNCY201614913_019; CNCY201614913_020; CNCY201614913_021; CNCY201614913_022; CNCY201614913_023; CNCY201614913_024; CNCY201614913_025; CNCY201614913_026; CNCY201614913_027; CNCY201614913_028; CNCY201614913_029; CNCY201614913_030; CNCY201614913_031; CNCY201614913_032; CNCY201614913_033; CNCY201614913_034; CNCY201614913_035; CNCY201614913_036; CNCY201614913_037; CNCY201614913_038; CNCY201614913_039; CNCY201614913_040; CNCY201614913_041; CNCY201614913_042; CNCY201614913_043; CNCY201614913_044; CNCY201614913_045; CNCY201614913_046; CNCY201614913_047; CNCY201614913_048; CNCY201614913_049; CNCY201614913_050; CNCY201614913_051; CNCY201614913_052; CNCY201614913_053; CNCY201614913_054; CNCY201614913_055; CNCY201614913_056; CNCY201614913_057; CNCY201614913_058; CNCY201614913_059; CNCY201614913_060; CNCY201614913_061; CNCY201614913_062; CNCY201614913_063; CNCY201614913_064; CNCY201614913_065; CNCY201614913_066; CNCY201614913_067; CNCY201614913_068; CNCY201614913_069; CNCY201614913_070; CNCY201614913_071; CNCY201614913_072; CNCY201614913_073; CNCY201614913_074; CNCY201614913_075; CNCY201614913_076; CNCY201614913_077; CNCY201614913_078; CNCY201614913_079; CNCY201614913_080; CNCY201614913_081; CNCY201614913_082; CNCY201614913_083; CNCY201614913_084; CNCY201614913_085; CNCY201614913_086; CNCY201614913_087; CNCY201614913_088; CNCY201614913_089; CNCY201614913_090; CNCY201614913_091; CNCY201614913_092; CNCY201614913_093; CNCY201614913_094; CNCY201614913_095; CNCY201614913_096; CNCY201614913_097; CNCY201614913_098; CNCY201614913_099; CNCY201614913_100; CNCY201614913_101; CNCY201614913_102; CNCY201614913_103; CNCY201614913_104; CNCY201614913_105; CNCY201614913_106; CNCY201614913_107; CNCY201614913_108; CNCY201614913_109; CNCY201614913_110; CNCY201614913_111; CNCY201614913_112; CNCY201614913_113; CNCY201614913_114; CNCY201614913_115; CNCY201614913_116; CNCY201614913_117; CNCY201614913_118; CNCY201614913_119; CNCY201614913_120; CNCY201614913_121; CNCY201614913_122; CNCY201614913_123; CNCY201614913_124; CNCY201614913_125; CNCY201614913_126; CNCY201614913_127; CNCY201614913_128; CNCY201614913_129; CNCY201614913_130; CNCY201614913_131; CNCY201614913_132; CNCY201614913_133; CNCY201614913_134; CNCY201614913_135; CNCY201614913_136; CNCY201614913_137; CNCY201614913_138; CNCY201614913_139; CNCY201614913_140; CNCY201614913_141; CNCY201614913_142; CNCY201614913_143; CNCY201614913_144; CNCY201614913_145; CNCY201614913_146; CNCY201614913_147; CNCY201614913_148; CNCY201614913_149; CNCY201614913_150; CNCY201614913_151; CNCY201614913_152; CNCY201614913_153; CNCY201614913_154; CNCY201614913_155; CNCY201614913_156; CNCY201614913_157; CNCY201614913_158; CNCY201614913_159; CNCY201614913_160; CNCY201614913_161; CNCY201614913_162; CNCY201614913_163; CNCY201614913_164; CNCY201614913_165; CNCY201614913_166; CNCY201614913_167; CNCY201614913_168; CNCY201614913_169; CNCY201614913_170; CNCY201614913_171; CNCY201614913_172; CNCY201614913_173; CNCY201614913_174; CNCY201614913_175; CNCY201614913_176; CNCY201614913_177; CNCY201614913_178; CNCY201614913_179; CNCY201614913_180; CNCY201614913_181; CNCY201614913_182; CNCY201614913_183; CNCY201614913_184; CNCY201614913_185; CNCY201614913_186; CNCY201614913_187; CNCY201614913_188; CNCY201614913_189; CNCY201614913_190; CNCY201614913_191; CNCY201614913_192; CNCY201614913_193; CNCY201614913_194; CNCY201614913_195; CNCY201614913_196; CNCY201614913_197; CNCY201614913_198; CNCY201614913_199; CNCY201614913_200; CNCY201614913_201; CNCY201614913_202; CNCY201614913_203; CNCY201614913_204; CNCY201614913_205; CNCY201614913_206; CNCY201614913_207; CNCY201614913_208; CNCY201614913_209; CNCY201614913_210; CNCY201614913_211; CNCY201614913_212; CNCY201614913_213; CNCY201614913_214; CNCY201614913_215; CNCY201614913_216; CNCY201614913_217; CNCY201614913_218; CNCY201614913_219; CNCY201614913_220; CNCY201614913_221; CNCY201614913_222; CNCY201614913_223; CNCY201614913_224; CNCY201614913_225; CNCY201614913_226; CNCY201614913_227; CNCY201614913_228; CNCY201614913_229; CNCY201614913_230; CNCY201614913_231; CNCY201614913_232; CNCY201614913_233; CNCY201614913_234; CNCY201614913_235; CNCY201614913_236; CNCY201614913_237; CNCY201614913_238; CNCY201614913_239; CNCY201614913_240; CNCY201614913_241; CNCY201614913_242; CNCY201614913_243; CNCY201614913_244; CNCY201614913_245; CNCY201614913_246; CNCY201614913_247; CNCY201614913_248; CNCY201614913_249; CNCY201614913_250; CNCY201614913_251; CNCY201614913_252; CNCY201614913_253; CNCY201614913_254; CNCY201614913_255; CNCY201614913_256; CNCY201614913_257; CNCY201614913_258; CNCY201614913_259; CNCY201614913_260; CNCY201614913_261; CNCY201614913_262; CNCY201614913_263; CNCY201614913_264; CNCY201614913_265; CNCY201614913_266; CNCY201614913_267; CNCY201614913_268; CNCY201614913_269; CNCY201614913_270; CNCY201614913_271; CNCY201614913_272; CNCY201614913_273; CNCY201614913_274; CNCY201614913_275; CNCY201614913_276; CNCY201614913_277; CNCY201614913_278; CNCY201614913_279; CNCY201614913_280; CNCY201614913_281; CNCY201614913_282; CNCY201614913_283; CNCY201614913_284; CNCY201614913_286; CNCY201614913_287; CNCY201614913_288; CNCY201614913_289; CNCY201614913_290; CNCY201614913_291; CNCY201614913_292; CNCY201614913_293; CNCY201614913_294; CNCY201614913_295; CNCY201614913_296; CNCY201614913_297; CNCY201614913_298; CNCY201614913_299; CNCY201614913_300; CNCY201614913_301; CNCY201614913_302; CNCY201614913_303; CNCY201614913_304; CNCY201614913_305; CNCY201614913_306; CNCY201614913_307; CNCY201614913_308; CNCY201614913_309; CNCY201614913_310; CNCY201614913_311; CNCY201614913_312; CNCY201614913_313; CNCY201614913_314; CNCY201614913_315; CNCY201614913_316; CNCY201614913_317; CNCY201614913_318; CNCY201614913_319; CNCY201614913_320; CNCY201614913_321; CNCY201614913_322; CNCY201614913_323; CNCY201614913_324; CNCY201614913_325; CNCY201614913_326; CNCY201614913_327; CNCY201614913_328; Comment; Event label; File name; File size; GLD; Glider; Latitude of event; Longitude of event; Mediterranean Sea, Eastern Basin; SG149_Mission_13; Uniform resource locator/link to file
    Type: Dataset
    Format: text/tab-separated-values, 1027 data points
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  • 7
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    Sample description of dredge stations during SONNE cruise SO121 (1997)
    PANGAEA
    Details
    Publication Date: 2024-06-26
    Keywords: DEPTH, sediment/rock; Description; Dredge; DRG; Elevation of event; Elevation of event 2; Event label; GIK/IfG; GIK17034-1; GIK17034-2; GIK17034-3; GIK17038-1; GIK17038-10; GIK17038-11; GIK17038-12; GIK17038-13; GIK17038-14; GIK17038-2; GIK17038-3; GIK17038-4; Institute for Geosciences, Christian Albrechts University, Kiel; Kebrit Deep; Latitude of event; Latitude of event 2; Longitude of event; Longitude of event 2; ROTES MEER; Sample ID; SO121; SO121_53; SO121_55; SO121_56; SO121_66; SO121_67; SO121_68; SO121_69; SO121_77; SO121_78; SO121_79; SO121_80; SO121_81; Sonne
    Type: Dataset
    Format: text/tab-separated-values, 132 data points
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  • 8
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    Susceptibility of sediment cores of the Laptev Sea (1995)
    PANGAEA
    In:  Supplement to: Nürnberg, Dirk; Fütterer, Dieter K; Niessen, Frank; et al. (1995): The depositional environment of the Laptev Sea continental margin: preliminiary results from the R/V Polarstern ARK IX-4 cruise. Polar Research, 14(1), 43-53, https://doi.org/10.1111/j.1751-8369.1995.tb00709.x
    Details
    Publication Date: 2024-07-01
    Description: Marine geological investigations were performed across the Laptev Sea continental shelf and slope. Thirty sampling sites were selected covering a depth range of ca 3500 m. Maximum core recovery was 9 m. PARASOUND sub-bottom profiling was used for site surveying and provided important information on the depositional environment of the continental margin together with sedimentological and stratigraphical investigations. Undisturbed horizontal layering of the sea-floor sediments is a common feature for the Laptev Sea shelf. There is no indication for glaciation of the broad shelf region during the Last Glacial, since moraine deposits are missing. However, a high number of plough marks in places points to recent to sub-recent ice-erosion which has led to an intensive sediment reworking on the shelf. Several broadly incised river channels recorded near the shelf edge are related to Pleistocene drainage systems of large Siberian rivers which cut into the dry shelves during the Last Glacial Maximum and were subsequently filled during the Holocene. During the Last Glacial we therefore suspect a significant freshwater contribution from the Eurasian continent to the Arctic Oceans. The composition of the normally consolidated core sediments indicates a strong flux of terrigenous material, which is mainly provided by the Siberian rivers. Currents distributing the suspension load and sea ice are supposedly major agents transporting sediments across the shelf to the central arctic deep sea basin. Sediment cores from the upper and middle continental slope exhibit only minor lithological changes. Bioturbated, fine-grained sediments with high organic carbon contents dominate. The presence of free hydrogen sulphide gas within the sediment column indicates that an intense decay of organic matter under reducing conditions is taking place. Sedimentation rates are estimated to be ca. 50 cm/1000 years at the upper slope of the western Laptev Sea, being approximately 10 times higher than at the continental rise. The suboxic to anoxic environment diminishes at deep sea sites of the western Laptev Sea, where sedimentation rates and influx of organic matter are reduced.
    Keywords: ARK-IX/4; AWI_Paleo; Gravity corer (Kiel type); KAL; Kasten corer; Laptev Sea; Paleoenvironmental Reconstructions from Marine Sediments @ AWI; Polarstern; PS2471-4; PS2472-4; PS2473-4; PS2474-3; PS2475-3; PS2476-4; PS2477-4; PS27; PS27/054; PS27/056; PS27/058; PS27/059; PS27/060; PS27/062; PS27/064; Quaternary Environment of the Eurasian North; QUEEN; SL
    Type: Dataset
    Format: application/zip, 7 datasets
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  • 9
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    Susceptibility raw data of sediment core PS2476-4 (1995)
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    Details
    Publication Date: 2024-07-01
    Keywords: ARK-IX/4; AWI_Paleo; DEPTH, sediment/rock; Gravity corer (Kiel type); Laptev Sea; Paleoenvironmental Reconstructions from Marine Sediments @ AWI; Polarstern; PS2476-4; PS27; PS27/062; Quaternary Environment of the Eurasian North; QUEEN; SL; Susceptibility; Susceptibility unit, AWI, MS2C [145 mm]
    Type: Dataset
    Format: text/tab-separated-values, 316 data points
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  • 10
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    Susceptibility raw data of sediment core PS2475-3 (1995)
    PANGAEA
    Details
    Publication Date: 2024-07-01
    Keywords: ARK-IX/4; AWI_Paleo; DEPTH, sediment/rock; Gravity corer (Kiel type); Laptev Sea; Paleoenvironmental Reconstructions from Marine Sediments @ AWI; Polarstern; PS2475-3; PS27; PS27/060; Quaternary Environment of the Eurasian North; QUEEN; SL; Susceptibility; Susceptibility unit, AWI, MS2C [145 mm]
    Type: Dataset
    Format: text/tab-separated-values, 400 data points
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