13,649 Works

Total organic carbon, delta13C, biomarker, gas compilations and hopanoids analysis from IODP Sites 307-U1317 and 307-U1318, supplement to: Mangelsdorf, Kai; Zink, Klaus-Gerhard; di Primio, Rolando; Horsfield, Brian (2011): Microbial lipid markers within and adjacent to Challenger Mound in the Belgica carbonate mound province, Porcupine Basin, offshore Ireland (IODP Expedition 307). Marine Geology, 282(1-2), 91-101

Kai Mangelsdorf, Klaus-Gerhard Zink, Rolando di Primio & Brian Horsfield
During the Integrated Ocean Drilling Program (IODP) Expedition 307 for the first time a cold-water coral carbonate mound was drilled down through its base into the underlying sediments. In the current study, sample material from within and below Challenger Mound, located in the Belgica carbonate mound province in the Porcupine Basin offshore Ireland, was investigated for its distribution of microbial communities and gas composition using biogeochemical and geochemical approaches to elucidate the question on the...

Geochemical provenance analysis of fine-grained sediment of sediment core AND1-1, supplement to: Monien, Donata; Kuhn, Gerhard; von Eynatten, Hilmar; Talarico, Franco M (2012): Geochemical provenance analysis of fine-grained sediment revealing Late Miocene to recent Paleo-Environmental changes in the Western Ross Sea, Antarctica. Global and Planetary Change, 96-97, 41-58

Donata Monien, Gerhard Kuhn, Hilmar von Eynatten & Franco M Talarico
Bulk chemical fine-grained sediment compositions from southern Victoria Land glacimarine sediments provide significant constraints on the reconstruction of sediment provenance models in the McMurdo Sound during Late Cenozoic time. High-resolution (~ 1 ka) geochemical data were obtained with a non-destructive AVAATECH XRF Core Scanner (XRF-CS) on the 1285 m long ANDRILL McMurdo Ice Shelf Project (MIS) sediment core AND-1B. This data set is complemented by high-precision chemical analyses (XRF and ICP-OES) on discrete samples.Statistical analyses...

Radionuclides in the Weddell Sea, supplement to: Rutgers van der Loeff, Michiel M (1994): 228Ra and 228Th in the Weddell Sea. In: Johannessen, O M; Muench, R D & Overland, J E (eds.), The polar oceans and their role in shaping the global environment. Geophysical Monograph Series, American Geophysical Union, 540 pages, ISBN 0-87590-042-9, 85, 177-186

Michiel M Rutgers van der Loeff
228Ra and its granddaughter 228Th were measured on a N-S transect from 45's to the Antarctic continent across the Antarctic Circumpolar Current (ACC) and the Weddell Sea. The distributions of 230Th, 228Th and 228Ra show that southward transport across the ACC of Circumpolar Deep Water (CDW), the source of Warm Deep Water (WDW) in the Weddell Sea, occurs on a time scale between 8 and 30 years, in qualitative agreement with estimates of the upwelling...

Particle flux determined from traps in the Canary Island region, supplement to: Neuer, Susanne; Ratmeyer, Volker; Davenport, Robert; Fischer, Gerhard; Wefer, Gerold (1997): Deep water particle flux in the Canary Island region: seasonal trends in relation to long-term satellite derived pigment data and lateral sources. Deep Sea Research Part I: Oceanographic Research Papers, 44(8), 1451-1466

Susanne Neuer, Volker Ratmeyer, Robert Davenport, Gerhard Fischer & Gerold Wefer
We present a 3 year record of deep water particle flux at the recently initiated ESTOC (European Station for Time-series in the Ocean, Canary Islands) located in the eastern subtropical North Atlantic gyre. Particle flux was highly seasonal, with flux maxima occurring in late winter-early spring. A comparison with historic CZCS (Coastal Zone Colour Scanner) data shows that these flux maxima occurred about 1 month after maximum chlorophyll was observed in surface waters in a...

Revised chronology of Neogene DSDP holes from the World Ocean, supplement to: Lazarus, David B; Spencer-Cervato, Cinzia; Pika-Biolzi, Milena; Beckmann, Jean-Pierre; von Salis, Katharina H; Hilbrecht, Hienz; Thierstein, Hans R (1995): Revised chronology of Neogene DSDP holes from the world ocean. Ocean Drilling Program, Texas A&M University, Technical Note, 24, 301 pp

David B Lazarus, Cinzia Spencer-Cervato, Milena Pika-Biolzi, Jean-Pierre Beckmann, Katharina H von Salis, Hienz Hilbrecht & Hans R Thierstein
After nearly 30 years of growth in geochronologic knowledge, the originally published age models for many older deep sea marine sections have become badly outdated. In this report we present newly revised age models for Neogene sediments from 94 DSDP holes. Biostratigraphic data for planktonic foraminifers, calcareous nannofossils, diatoms and radiolarians, paleomagnetic and other stratigraphic data were compiled from the original Initial Reports volumes of DSDP. The Berggren et al. (1985 doi:10.1130/0016-7606(1985)96<1407:CG>2.0.CO;2) scale was used...

Age determination of sediment cores off western Spitsbergen, supplement to: Svendsen, John Inge; Mangerud, Jan; Elverhoi, Anders; Solheim, Anders; Schüttenhelm, Ruud TE (1992): The Late Weichselian glacial maximum on western Spitsbergen inferred from offshore sediment cores. Marine Geology, 104(1-4), 1-17

John Inge Svendsen, Jan Mangerud, Anders Elverhoi, Anders Solheim & Ruud TE Schüttenhelm
The Late Weichselian glacial history of the continental shelf off western Spitsbergen is discussed, based on acoustic sub-bottom records and sediment cores. The outer part of Isfjorden and the inner shelf to the west of this fjord are characterized by a thin veneer (10-20 m) of glacigenic sediments and absence of ice-marginal features. Towards the outer shelf the sediment thickness increases significantly, and exceeds 500 m at the shelf edge. Possible moraine complexes were identified...

Stable isotope ratios of foraminifera, grain-size distribution and magnetic susceptibility record of sediment core MD99-2339, supplement to: Voelker, Antje H L; Lebreiro, Susana Martin; Schönfeld, Joachim; Cacho, Isabel; Erlenkeuser, Helmut; Abrantes, Fatima F (2006): Mediterranean outflow strengthening during northern hemisphere coolings: A salt source for the glacial Atlantic? Earth and Planetary Science Letters, 245(1-2), 39-55

Antje H L Voelker, Susana Martin Lebreiro, Joachim Schönfeld, Isabel Cacho, Helmut Erlenkeuser & Fatima F Abrantes
High-resolution grain size and magnetic susceptibility records from the eastern Gulf of Cadiz (site MD99-2339; 1170m water depth) reveal contourites formed by the Mediterranean Outflow (MOW) during the last 47kyr BP. Oscillations in the MOW's intensity occurred in phase with Greenland temperature variations with a stronger outflow during northern hemisphere coolings such as Dansgaard-Oeschger stadials, Heinrich events, and the Younger Dryas. Benthic delta13C data implies the Western Mediterranean Deep Water as one of the main...

Stable isotope record and aklenonen index of MIS 11 sediments, supplement to: Dickson, Alexander J; Beer, Christopher J; Dempsey, Ciara; Maslin, Mark A; Bendle, James A; McClymont, Erin L; Pancost, Richard D (2009): Oceanic forcing of the Marine Isotope Stage 11 interglacial. Nature Geoscience, 2, 428-433

Alexander J Dickson, Christopher J Beer, Ciara Dempsey, Mark A Maslin, James A Bendle, Erin L McClymont & Richard D Pancost
The interglacial known as Marine Isotope Stage 11 has been proposed to be analogous to the Holocene, owing to similarities in the amplitudes of orbital forcing. It has been difficult to compare the periods, however, because of the long duration of Stage 11 and a lack of detailed knowledge of any extreme climate events that may have occurred. Here we use the distinctive phasing between seasurface temperatures and the oxygen-isotope records of benthic foraminifera in...

Pollen record in bones from Barsbek, northern Germany

Rudolf Schütrumpf
Als im Frühsommer 1949 die ersten Pferdeschädel und Hundeknochen als Streufunde aus dem Barsbeker Moor bekannt wurden, war es wünschenswert, mit Hilfe der Pollenanalyse eine zeitliche Zuordnung zu versuchen. Auf diese Weise konnte unter Umständen wieder ein prähistorischer Horizont pollenanalytisch fixiert werden, da u.a. auch datierbare Keramikreste aus der römischen Kaiserzeit gefunden wurden. Die Analyse des aus der Stirnhöhle zweier Pferdeschädel entnommenen Materials ergab die beiden obersten in der Tabelle verzeichneten Pollenspektren. Bei der Untersuchung...

Geochemistry of DSDP Hole 86-577B samples, supplement to: Robin, Eric; Froget, Laurence; Jehanno, Celestine; Rocchia, Robert (1993): Evidence for a K/T impact event in the Pacific Ocean. Nature, 363(6430), 615-617

Eric Robin, Laurence Froget, Celestine Jehanno & Robert Rocchia
THE chemical, mineralogical and isotopic characteristics of deposits at the Cretaceous/Tertiary (K/T) boundary are suggestive of a large impact event, the prime candidate (Sharpton et al., 1992, doi:10.1038/359819a0) being the Chicxulub crater in Yucatan, Mexico. Spinel-bearing spherules, which may be associated with such impacts, have been reported (Smit and Romein, 1985, doi:10.1016/0012-821X(85)90019-6) at several K/T boundary sites worldwide, but their origin is still uncertain. We have examined the spinel-bearing material recovered from K/T boundary deposits...

Oxygen isotope composition, organic carbon content, and grain size distribution at the Peru upwelling region, supplement to: Wefer, Gerold; Heinze, Peter-M; Suess, Erwin (1990): Stratigraphy and sedimentation rates from oxygen isotope composition, organic carbon content, and grain-size distribution at the Peru Upwelling Region: Holes 680B and 686B. In: Suess, E; von Huene, R; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 112, 355-367

Gerold Wefer, Peter-M Heinze & Erwin Suess
A high-resolution chronostratigraphy was established for Holes 680B and 686B, drilled during Ocean Drilling Program (ODP) Leg 112 off Peru. The stratigraphy is largely based on oxygen isotopes of benthic foraminifers and supplemented by data for organic-carbon content and sediment texture. At both drill sites, during isotope Stage 1, the sedimentation rate was more than twice that of the older stages, which partly reflects lack of compaction in the youngest sediments. In Hole 680B, located...

Consolidation, triaxial shear-strength, and index-property characteristics of organic-rich sediments from the Peru margin, supplement to: Lee, Homa J; Kayen, Robert E; McArthur, William G (1990): Consolidation, triaxial shear-strength, and index-property characteristics of organic-rich sediment from the Peru Continental Margin: results from Leg 112. In: Suess, E; von Huene, R; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 112, 639-651

Homa J Lee, Robert E Kayen & William G McArthur
Sites 679, 680, and 681 of the Ocean Drilling Program were drilled along an east-west transect across an organic-rich, diatomaceous, coastal upwelling facies that occurs as a shelf/slope lens along the Peru continental margin. Seven 60-cm-long, unsplit core sections from these sites were tested for consolidation, triaxial shear strength, and geotechnical index properties. The testing showed that the sediment has unusually high water content, Atterberg limits, degree of overconsolidation, compressibility, and shear strength. The sediment...

Oxygen isotopic and species composition of planktonic foraminiferas in sediment cores from the North Atlantic, supplement to: Barash, Max S; Nikolayev, Sergey D; Blyum, Natalia S (1973): Paleotemperature analysis of three sediment cores from the North Atlantic. Oceanology, 13, 870-871

Max S Barash, Sergey D Nikolayev & Natalia S Blyum
Paleotemperature curves were drawn from oxygen-isotope ratios in CaCO3 of planktonic foraminiferal tests and by the micropaleontological method using quantitative relationships of their species. Two series of curves yield similar results. These data confirm that isotope composition of oxygen reflects primarily temperature, and not isotope composition in ocean water. Temperature of the upper layer of ocean water increased from north to south both during the last two glaciations and in the interglacials. All three sediment...

Grain shape of sediment from the Weddell Sea, supplement to: Smith, C H; O'Connell, Suzanne B (1990): Provenance and glacial history of very fine quartz sand from the Weddell Sea, Antarctica. In: Barker, PF; Kennett, JP; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 113, 89-109

C H Smith & Suzanne B O'Connell
Very fine quartz sand was examined from Paleogene and Neogene sediments of ODP Sites 693, 694, 695, 696, and 697 to determine their grain roundness using Fourier analysis and SEM surface texture characteristics. The objective of this study was to identify grain roundness and surface texture characteristics unique to East (Site 693) and West (Sites 695, 696, and 697) Antarctica and to glacial regimes. Once identified, these distinguishing features could then be used to determine...

Grain shape and mineralogy of loess on New Zealands South Island, supplement to: Harris, Stuart A (1983): Infilled fissures in loess, Banks Peninsula, New Zealand. Polarforschung, 53(2), 49-58

Stuart A Harris
Infilled fissures are described from the interface between two loess deposits on Banks Peninsula, South Island, New Zealand. Both loesses differ from the other loesses by having a solifluction deposit at their base consisting of angular basalt fragments of the same angularity as fresh frost shattered basalt mixed with the loess. Typically, the fissures are narrow and up to 160 cm deep while the infilling of the overlying loess shows no obvious structure. They occur...

Benthic foraminiferal stable isotope record of the early Paleogene in the Southern Ocean, supplement to: Katz, Miriam E; Miller, K G (1991): Early Paleogene benthic foraminiferal assemblages and stable isotopes in the Southern Ocean. In: Ciesielski, PF; Kristoffersen, Y; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 114, 481-512

Miriam E Katz & K G Miller
ODP Leg 114 recovered sections at four sites east of the Falkland Plateau that cover a wide range of paleodepths and provide the opportunity to evaluate the response of benthic foraminifers to late Paleocene and Eocene Oceanographic changes. Early Paleogene paleodepth estimates were obtained by "backtracking" assuming simple thermal subsidence (Site 698, -900 m; Site 702, -2000 m; Site 700, -2400 m; and Site 699, -2800 m). These estimates agree with paleodepths determined by comparing...

Seismic properties of sheeted dikes from ODP Hole 111-504B, supplement to: Christensen, Nikolas I; Wepfer, William W; Baud, R D (1989): Seismic properties of sheeted dikes from Hole 504B, ODP Leg 111. In: Becker, K; Sakai, H; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 111, 171-176

Nikolas I Christensen, William W Wepfer & R D Baud
Seismic velocities have been measured at confining pressures to 600 MPa for eight samples of sheeted dike rock obtained from Hole 504B during Leg ODP 111. The compressional- and shear-wave velocities are, in general, higher than the velocities measured in overlying dike rocks obtained from the hole during DSDP Leg 83. The velocity gradients observed in Layer 2C result from decreasing porosity with depth and increasing metamorphic grade. The laboratory-measured velocities of the Leg 111...

Amino acids in the interstitial waters from ODP Hole 113-695A, supplement to: Kawahata, Hodaka; Ishizuka, Toshio; Nagao, Toshiyasu (1990): Amino acids in the Interstitial Waters from ODP Site 695 in the Weddell Sea, Antarctic Ocean. In: Barker, PF; Kennett, JP; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 113, 179-187

Hodaka Kawahata, Toshio Ishizuka & Toshiyasu Nagao
Site 695 lies on the southeast margin of the South Orkney microcontinent on the northern margin of the Weddell Sea, at 62°23.48'S, 43°27.10'W in 1305 m water depth. The inorganic properties of interstitial waters at this site, including sulfate reduction, biogenic methane production, and high concentrations of ammonia and phosphate, imply high microbial activity. However, no clear relationship between amino acid composition and concentration and the type of microbial activity (e.g., sulfate reduction or methane...

Distribution of and biomass of macroplankton in the West Tropical Pacific, supplement to: Vinogradov, Mikhail E; Parin, Nikolay V (1973): On the vertical distribution of macroplankton in the Tropical Pacific. Oceanology, 13, 104-113

Mikhail E Vinogradov & Nikolay V Parin
Thirty-five night-time samples were collected with an Isaacs-Kidd trawl at depths ranging from 40 to 1100 m on four fixed-position stations in the western equatorial Pacific. The catches were sorted into taxonomic groups and weighed. An attempt was made to exclude unwanted material obtained as the trawl was hauled in. Despite irregular variation in biomass from catch to catch, change with depth in percentage of different groups in total plankton biomass was the same in...

Composition of organic matter in deep-sea holoturians and host bottom sediments from the Kuril-Kamchatka Trench, supplement to: Bordovsky, Oleg K; Sokolova, Maria N; Smirnov, B A; Akhmet'yeva, E A; Zezina, Olga N (1974): Evaluation of the role of bottom fauna in the transformation of organic matter in sediments (with specific reference to the deep-sea detritus-feeders in the Kuril-Kamchatka Trench). Oceanology, 14, 128-132

Oleg K Bordovsky, Maria N Sokolova, B A Smirnov, E A Akhmet'yeva & Olga N Zezina
In 5 holothurian species of the Aspidochirota and Elasipoda orders concentration of organic carbon in alimentary canals due to selective feeding on the average is 7 times higher than in host sediments. Concentration decreases from the first section of the alimentary canal to the last. Intestinal contents are enriched with bitumens, in which amount of oils and resins increases, while that of asphaltenes slightly decreases from the first section to the last. It is conjectured...

Antarctic Paleogene planktonic foraminifera, supplement to: Stott, Lowell D; Kennett, James P (1990): Antarctic Paleogene planktonic foraminifer biostratigraphy: ODP Leg 113, Sites 689 and 690. In: Barker, PF; Kennett, JP; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 113, 549-569

Lowell D Stott & James P Kennett
ODP Leg 113 drilled the first nearly continuous pre-Neogene calcareous biogenic sequence from the Antarctic Ocean at Sites 689 and 690. At 65∞S, these are probably the highest latitude calcareous sequences available in the Southern Hemisphere deep oceans. Together these two sites provide a nearly complete planktonic foraminifer history for the Late Cretaceous through late Oligocene. Planktonic foraminifers are abundant and generally well preserved from the Upper Cretaceous to the Eocene. Abundances and the quality...

Major ion concentrations in rain water and atmospheric moisture above the Atlantic Ocean, supplement to: Korzh, Vyacheslav D (1973): Concentration of Cl-, Mg2+, Ca2+, and HCO3- ions in atmospheric moisture above the Atlantic Ocean along the route of the 13-th cruise of the R/V Akademik Kurchatov. Oceanology, 13, 842-847

Vyacheslav D Korzh
Concentratios of Cl-, Mg2+, Ca2+, and HCO3- ions were studied in rain waters and condensed atmospheric moisture above the Atlantic Ocean. Maximal number of samples was collected in the eastern tropical North Atlantic. Concentration of chloride ions ranged from 1 to 28 mg/l in rain waters (average 4.3 mg/l) and ranged from 0.3 to 2 mg/l in condensed atmospheric moisture with the average about one order of magnitude less than that for rain waters. Chloride...

Investigation of planktic foraminifera from the Norwegian-Greenland Sea, supplement to: Simstich, Johannes; Sarnthein, Michael; Erlenkeuser, Helmut (2003): Paired d18O signals of Neogloboquadrina pachyderma (s) and Turborotalita quinqueloba show thermal stratification in Nordic Seas. Marine Micropaleontology, 48(1-2), 107-125

Johannes Simstich, Michael Sarnthein & Helmut Erlenkeuser
The vertical density gradients in the Nordic Seas are crucial for the preconditioning of the surface water to thermohaline sinking in winter. These gradients can be reconstructed from paired oxygen isotope data in tests of different species of planktonic foraminifera, the isotopic signatures of which represent different calcification depths in the water column. Comparison of d18O values from foraminiferal tests in plankton hauls, sediment traps, and nearby core top samples with the calculated d18Ocalcite profile...

Stable isotope ratios on foraminifera and age determinations from sediments of BP00 and BP01 cruises to the Kara Sea

Johannes Simstich
no abstract available

Short-term spectral analysis of ODP Hole 114-704B, supplement to: Mwenifumbo, C J; Blangy, J P (1991): Short-Term spectral analysis of downhole logging measurements from Site 704. In: Ciesielski, PF; Kristoffersen, Y; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 114, 577-585

C J Mwenifumbo & J P Blangy
Short-term spectral analysis was carried out on geochemical logging data from ODP Site 704. The FFT was used to compute the amplitude spectra of short-term overlapping segments to produce depth-period-amplitude spectrograms of the logging data. The spectrograms provided a means of evaluating the significance of the observed periodic components. The periodic components that were consistently present and prominent across a given record interval were considered to be significant. Changes in the spectrogram characteristics seem to...

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  • University of Iowa
  • Leibniz-Zentrum für Marine Tropenforschung, Bremen, Germany
  • Charles Darwin Foundation
  • Deutsches Institut für Entwicklungspolitik
  • Leibniz-Institut für Medienforschung | Hans-Bredow-Institut
  • Alfred Wegener Institute - Research Unit Potsdam
  • Alfred Wegener Institute - Wadden Sea Station Sylt
  • Naturhistorisches Museum Basel
  • Boston University