973 Works

Investigations on fossil bivalves and wood from Seymour Island, Antarctica, supplement to: Ivany, Linda C; Brey, Thomas; Huber, Matthew; Buick, Devin P; Schöne, Bernd R (2011): El Niño in the Eocene greenhouse recorded by fossil bivalves and wood from Antarctica. Geophysical Research Letters, 38, L16709

Linda C Ivany, Thomas Brey, Matthew Huber, Devin P Buick & Bernd R Schöne
Quasi-periodic variation in sea-surface temperature, precipitation, and sea-level pressure in the equatorial Pacific known as the El Niño - Southern Oscillation (ENSO) is an important mode of interannual variability in global climate. A collapse of the tropical Pacific onto a state resembling a so-called 'permanent El Niño', with a preferentially warmed eastern equatorial Pacific, flatter thermocline, and reduced interannual variability, in a warmer world is predicted by prevailing ENSO theory. If correct, future warming will...

Physical oceanography from the TRACTOR project

TRACTOR Members, Truls Johannessen, Frank Cleveland, Yoshie Kasajima, Jane O'Dwyer & Héðinn Valdimarsson
Primary Objectives- Describe and quantify the present strength and variability of the circulation and oceanic processes of the Nordic Seas regions using primarily observations of the long term spread of a tracer purposefully released into the Greenland Sea Gyre in 1996.- Improve our understanding of ocean processes critical to the thermaholine circulation in the Nordic Seas regions so as to be able to predict how this region may respond to climate change.- Assess the role...

Temperature and d18O measurements from different ODP Sites at the shelf and upper slope of the Peru Margin, supplement to: Meister, Patrick; Bernasconi, Stefano M; Vasconcelos, Crisogono; McKenzie, Judith A (2008): Sealevel changes control diagenetic dolomite formation in hemipelagic sediments of the Peru Margin. Marine Geology, 252(3-4), 166-173

Patrick Meister, Stefano M Bernasconi, Crisogono Vasconcelos & Judith A McKenzie
The first experimentally determined temperature dependent oxygen-18 fractionation factor between dolomite and water at low temperatures [Vasconcelos et al. 1995 doi:10.1130/G20992.1] allows now the precise calculation of temperatures during early diagenetic dolomite precipitation. We use d18O values of early diagenetic dolomite beds sampled during ODP Legs 112 and 201 on the Peru continental margin (Sites 1227, 1228 and 1229) [Meister et al. 2007, doi:10.1111/j.1365-3091.2007.00870.x] to calculate paleo-porewater temperatures at the time of dolomite precipitation. We...

Geochemistry measured on sediment core GeoB12309-5, supplement to: Wilhelms-Dick, Dorothee; Westerhold, Thomas; Röhl, Ursula; Wilhelms, Frank; Vogt, Christoph; Hanebuth, Till J J; Römmermann, Helge; Kriews, Michael; Kasten, Sabine (2012): A comparison of mm scale resolution techniques for element analysis in sediment cores. Journal of Analytical Atomic Spectrometry, 27(9), 1574-1584

Dorothee Wilhelms-Dick, Thomas Westerhold, Ursula Röhl, Frank Wilhelms, Christoph Vogt, Till J J Hanebuth, Helge Römmermann, Michael Kriews & Sabine Kasten
Laminated sediment records from the oxygen minimum zone in the Arabian Sea offer unique ultrahigh-resolution archives for deciphering climate variability in the Arabian Sea region. Although numerous analytical techniques are available it has become increasingly popular during the past decade to analyze relative variations of sediment cores' chemical signature by non-destructive X-ray fluorescence (XRF) core scanning. We carefully selected an approximately 5 m long sediment core from the northern Arabian Sea (GeoB12309-5: 24°52.3' N; 62°59.9'...

Sediment and pore water data of five cores from the continental slope off Uruguay, supplement to: Henkel, Susann; Strasser, Michael; Schwenk, Tilmann; Hanebuth, Till J J; Hüsener, Johannes; Arnold, Gail Lee; Winkelmann, Daniel; Formolo, Michael J; Tomasini, Juan; Krastel, Sebastian; Kasten, Sabine (2011): An interdisciplinary investigation of a recent submarine mass transport deposit at the continental margin off Uruguay. Geochemistry, Geophysics, Geosystems, 12, Q08009

Susann Henkel, Michael Strasser, Tilmann Schwenk, Till J J Hanebuth, Johannes Hüsener, Gail Lee Arnold, Daniel Winkelmann, Michael J Formolo, Juan Tomasini, Sebastian Krastel & Sabine Kasten
Assessing frequency and extent of mass movement at continental margins is crucial to evaluate risks for offshore constructions and coastal areas. A multidisciplinary approach including geophysical, sedimentological, geotechnical, and geochemical methods was applied to investigate multistage mass transport deposits (MTDs) off Uruguay, on top of which no surficial hemipelagic drape was detected based on echosounder data. Nonsteady state pore water conditions are evidenced by a distinct gradient change in the sulfate (SO4**2-) profile at 2.8...

Isotope composition of dolomite, calcite and pore-waters of ODP Leg 210 samples, supplement to: Meister, Patrick; McKenzie, Judith A; Vasconcelos, Crisogono; Bernasconi, Stefano M; Frank, Martin; Gutjahr, Marcus; Schrag, Daniel P (2007): Dolomite formation in the dynamic deep biosphere: results from the Peru Margin. Sedimentology, 54(5), 1007-1032

Patrick Meister, Judith A McKenzie, Crisogono Vasconcelos, Stefano M Bernasconi, Martin Frank, Marcus Gutjahr & Daniel P Schrag
Early diagenetic dolomite beds were sampled during the Ocean Drilling Programme (ODP) Leg 201 at four reoccupied ODP Leg 112 sites on the Peru continental margin (Sites 1227/684, 1228/680, 1229/681 and 1230/685) and analysed for petrography, mineralogy, d13C, d18O and 87Sr/86Sr values. The results are compared with the chemistry, and d13C and 87Sr/86Sr values of the associated porewater. Petrographic relationships indicate that dolomite forms as a primary precipitate in porous diatom ooze and siliciclastic sediment...

Grain-size distribution, sedimentation rate and x-ray fluorescence data of four sediment cores off the Senegal River estuary, supplement to: Nizou, Jean; Hanebuth, Till J J; Heslop, David; Schwenk, Tilmann; Palamenghi, Luisa; Stuut, Jan-Berend W; Henrich, Rüdiger (2010): The Senegal River mud belt: A high-resolution archive of paleoclimatic change and coastal evolution. Marine Geology, 278(1-4), 150-164

Jean Nizou, Till J J Hanebuth, David Heslop, Tilmann Schwenk, Luisa Palamenghi, Jan-Berend W Stuut & Rüdiger Henrich
Fine-grained sediment depocenters on continental shelves are of increased scientific interest since they record environmental changes sensitively. A north-south elongated mud depocenter extends along the Senegalese coast in mid-shelf position. Shallow-acoustic profiling was carried out to determine extent, geometry and internal structures of this sedimentary body. In addition, four sediment cores were retrieved with the main aim to identify how paleoclimatic signals and coastal changes have controlled the formation of this mud depocenter.A general paleoclimatic...

Soil investigations at Casey and Arctowski stations, supplement to: Bölter, Manfred; Blume, Hans-Peter; Erlenkeuser, Helmut (1995): Pedologic, isotopic and microbiological properties of Antarctic soils. Polarforschung, 64(1), 1-7

Manfred Bölter, Hans-Peter Blume & Helmut Erlenkeuser
Soils from the maritime (Arctowski Station, King George Island) and coastal continental (Casey Station, Wilkes Land) Antarctic region are described with respect to pedology, isotopic and microbial environments. They are classified as leptosols, regosols, podzols, and histosols. Only surface layers (1-3 cm) contain sufficient organic material to provide a favourable environment for microbial communities and, further, for accumulations of organic matter. Variability of biological and chemical properties is high on a centimeter scale with depth...

Physical properties of 4 cores from the Bengal Fan, supplement to: Weber, Michael E; Wiedicke-Hombach, Michael; Kudrass, Hermann-Rudolph; Hübscher, Christian; Erlenkeuser, Helmut (1997): Active Growth of the Bengal Fan during sea-level rise and highstand. Geology, 25(4), 315-318

Michael E Weber, Michael Wiedicke-Hombach, Hermann-Rudolph Kudrass, Christian Hübscher & Helmut Erlenkeuser
New stratigraphic and high-resolution seismic data from the Bengal Fan indicate that the world's largest fan shows active growth during the most recent sea-level rise and the recent highstand. This unique phenomenon contradicts common sequence-stratigraphic models, and the sediment preserved provides new insight into the sedimentological response of a fan system to sea-level rise, climatic terminations, and monsoon intensity during the past climatic cycle. We present a detailed dated sequence of turbidite sedimentation based on...

Geochemistry and physics on sediment cores from the Peru Basin, supplement to: Weber, Michael E; Wiedicke-Hombach, Michael; Riech, Volkher; Erlenkeuser, Helmut (1995): Carbonate preservation history in the Peru Basin: Paleoceanographic implications. Paleoceanography, 10(4), 775-800

Michael E Weber, Michael Wiedicke-Hombach, Volkher Riech & Helmut Erlenkeuser
We studied preservation/dissolution cycles and paleoproductivity in eight sediment cores from the Peru Basin south of the highly productive surface waters of the eastern equatorial Pacific. Stratigraphy is based on stable oxygen isotopes and on combined magnetostratigraphy and biostratigraphy. Sediment cores which span the last 8 m.y., were retrieved during cruise 79 with RV SONNE close to the carbonate compensation depth (CCD). In general, sediments show Pacific-type carbonate cycles. We interpret a pronounced carbonate peak...

Sedimentology on 19 cores from the South China Sea, supplement to: Wang, Luejiang; Sarnthein, Michael; Erlenkeuser, Helmut; Grimalt, Joan O; Grootes, Pieter Meiert; Heilig, S; Ivanova, Elena V; Kienast, Markus; Pelejero, Carles; Pflaumann, Uwe (1999): East-Asian monsoon climate during the Late Pleistocene: high-resolution sediment records from the South China Sea. Marine Geology, 156(1-4), 245-284

Luejiang Wang, Michael Sarnthein, Helmut Erlenkeuser, Joan O Grimalt, Pieter Meiert Grootes, S Heilig, Elena V Ivanova, Markus Kienast, Carles Pelejero & Uwe Pflaumann
Based on the study of 10 sediment cores and 40 core-top samples from the South China Sea (SCS) we obtained proxy records of past changes in East Asian monsoon climate on millennial to bidecadal time scales over the last 220,000 years. Climate proxies such as global sea level, estimates of paleotemperature, salinity, and nutrients in surface water, ventilation of deep water, paleowind strength, freshwater lids, fluvial and/or eolian sediment supply, and sediment winnowing on the...

Phytoplankton biomass, chlorophyll concentration, and variability of lipid content in Calanus euxinus in the Black Sea in June 1991, supplement to: Yuneva, T V; Svetlichnyi, L S; Yunev, Oleg A; Georgieva, L V; Senichkina, Ludmila G (1997): Spatial variability of the lipid content in Calanus euxinus in relation to the chlorophyll concentration and phytoplankton biomass. Translated from Okeanologiya, 1997, 37(5), 745-752, Oceanology, 37(5), 672-678

T V Yuneva, L S Svetlichnyi, Oleg A Yunev, L V Georgieva & Ludmila G Senichkina
During field studies relationships between chlorophyll concentrations, phytoplankton biomass (total, individual sizes and species) and level of accumulation of total lipids, wax esters, triacylglycerols, and phospholipids in C. euxinus (copepodites V and females) were studied. These relationships allowed to display not only simple trophic relations between isolated parts of the C. euxinus population and phytoplankton, but also selective role of individual algae species in forming lipid reserves too. Besides it was found that geographical variability...

Grain size analysis of ODP Site 162-984, supplement to: Praetorius, Summer K; McManus, Jerry F; Oppo, Delia W; Curry, William B (2008): Episodic reductions in bottom-water currents since the last ice age. Nature Geoscience, 1, 449-452

Summer K Praetorius, Jerry F McManus, Delia W Oppo & William B Curry
Past changes in the freshwater balance of the surface North Atlantic Ocean are thought to have influenced the rate of deep-water formation, and consequently climate (Broecker and Denton, 1989, doi:10.1016/0016-7037(89)90123-3; Manabe and Stouffer, 1996; doi:10.1038/378165a0). Although water-mass proxies are generally consistent with an impact of freshwater input on meridional overturning circulation (Boyle and Keigwin, 1987, doi:10.1038/330035a0), there has been little dynamic evidence to support this linkage. Here we present a 25,000 year record of variations...

Sea ice diatoms from Late Quaternary sediments in the Scotia Sea, supplement to: Allen, Claire Susannah; Pike, Jennifer; Pudsey, Carol J (2011): Last glacial-interglacial sea-ice cover in the SW Atlantic and its potential role in global deglaciation. Quaternary Science Reviews, 30(19-20), 2446-2458

Claire Susannah Allen, Jennifer Pike & Carol J Pudsey
Sea-ice growth and decay in Antarctica is one of the biggest seasonal changes on Earth, expanding ice cover from 4x10**6 km**2 to a maximum of 19x10**6 km**2 during the austral winter. Analyses of six marine sediment cores from the Scotia Sea, SW Atlantic, yield records of sea-ice migration across the basin since the Lateglacial. The cores span nearly ten degrees of latitude from the modern seasonal sea-ice zone to the modern Polar Front. Surface sediments...

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...

Vertical microalgae fluxes at the mooring station LOMO-2 over the Lomonosov Ridge in the period from September 15, 1995 till August 16, 1996, supplement to: Zernova, Valentina V; Nöthig, Eva-Maria; Shevchenko, Vladimir P (2000): Vertical microalga flux in the northern Laptev Sea (from the data collected by the yearlong sediment trap). Translated from Okeanologiya, 2000, 40(6), 850-858, Oceanology, 40(6), 801-808

Valentina V Zernova, Eva-Maria Nöthig & Vladimir P Shevchenko
The first studies of microalgae fluxes over the Lomonosov Ridge in the northern Laptev Sea were carried out with a sediment trap at the year-long mooring station LOMO-2, installed at 150 m depth from September 15, 1995 to August 16, 1996. These studies demonstrated essential seasonal variations of vertical microalgae flux. It was shown that in summer diverse flora (composed mainly of cryophylic diatoms) growed intensively beneath the permanent ice cover. Strongly pronounced seasonal variations...

Geochemistry and isotopic ratios of boninites and related rocks of the Izu-Bonin Forearc, supplement to: Pearce, Julian A; Thirlwall, Matthew F; Ingram, Gerry; Murton, Bramley J; Arculus, Richard J; van der Laan, Sieger R (1992): Isotopic evidence for the origin of Boninites and related rocks drilled in the Izu-Bonin (Osagawara) Forearc, Leg 125. In: Fryer, P; Pearce, JA; Stokking, LB; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 125, 237-261

Julian A Pearce, Matthew F Thirlwall, Gerry Ingram, Bramley J Murton, Richard J Arculus & Sieger R van der Laan
Twenty-six samples representing the wide range of lithologies (low- and intermediate-Ca boninites and bronzite andesites, high-Ca boninites, basaltic andesites-rhyolites) drilled during Leg 125 at Sites 782 and 786 on the Izu-Bonin outer-arc high have been analyzed for Sr, Nd, and Pb isotopes. Nd-Sr isotope covariations show that most samples follow a trend parallel to a line from Pacific MORB mantle (PMM) to Pacific Volcanogenic sediment (PVS) but displaced slightly toward more radiogenic Sr. Pb isotope...

Geochemistry of ODP Site 125-786 volcanic rocks, supplement to: Murton, Bramley J; Peate, David W; Arculus, Richard J; Pearce, Julian A; van der Laan, Sieger R (1992): Trace-element geochemistry of volcanic rocks from Site 786: the Izu-Bonin Forearc. In: Fryer, P; Pearce, JA; Stokking, LB; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 125, 211-235

Bramley J Murton, David W Peate, Richard J Arculus, Julian A Pearce & Sieger R van der Laan
Eocene-Oligocene volcanic rocks drilled at Site 786 in the Izu-Bonin forearc cover a wide range of compositions from primitive boninites to highly evolved rhyolites. K-Ar dating reveals at least two distinct episodes of magmatism; one at 41 Ma and a later one at 35 Ma. The early episode produced low-Ca boninites and bronzite andesites that form an oceanic basement of pillow lavas and composite intrusive sheets, overlain by flows and intrusive sheets of intermediate-Ca boninites...

Geochemistry of igneous rock samples of ODP Site 125-786, supplement to: Arculus, Richard J; Pearce, Julian A; Murton, Bramley J; van der Laan, Sieger R (1992): Igneous stratigraphy and major element geochemistry of Holes 786A and 786B. In: Fryer, P; Pearce, JA; Stokking, LB; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 125, 143-169

Richard J Arculus, Julian A Pearce, Bramley J Murton & Sieger R van der Laan
A morphologically complex igneous basement was penetrated at Leg 125 Site 786 beneath approximately 100 m of Eocene-Pleistocene sediments at 31°52.45 'N, 141°13.59'E in a 3082-m water depth. The site is located on the forearc basement high (FBH) of the Izu-Bonin (Ogasawara) Arc. In the broadest terms, the sequence in Hole 786B consists of a basal sheeted dike complex, heavily mineralized in places, with overlying pillow lavas giving way to a complex and repeated sequence...

Geochemistry of Pleistocene volcanic rocks in the Mariana Forearc, supplement to: Marlow, Michael S; Johnson, Lynn E; Pearce, Julian A; Fryer, Patricia B; Pickthorn, Ledabeth G; Murton, Bramley J (1992): Pleistocene volcanic rocks in the Mariana Forearc revealed by drilling at Site 781. In: Fryer, P; Pearce, JA; Stokking, LB; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 125, 293-310

Michael S Marlow, Lynn E Johnson, Julian A Pearce, Patricia B Fryer, Ledabeth G Pickthorn & Bramley J Murton
Geophysical surveys of the Mariana forearc, in an area equidistant from the Mariana Trench and the active Mariana Island Arc, revealed a 40-m-deep graben about 13 km northwest of Conical Seamount, a serpentine mud volcano. The graben and its bounding horst blocks are part of a fault zone that strikes northwest-southeast beneath Conical Seamount. One horst block was drilled during Leg 125 of the Ocean Drilling Program (Site 781).Three lithologic units were recovered at Site...

Geochemistry of boninite and harzburgite of ODP Leg 125 basement samples, supplement to: Pearce, Julian A; van der Laan, Sieger R; Arculus, Richard J; Murton, Bramley J; Ishii, Teruaki; Peate, David W; Parkinson, Ian J (1992): Boninite and Harzburgite from Leg 125 (Bonin-Mariana Forearc): a case Study of magma genesis during the initial stages of subduction. In: Fryer, P; Pearce, JA; Stokking, LB; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 125, 623-659

Julian A Pearce, Sieger R van der Laan, Richard J Arculus, Bramley J Murton, Teruaki Ishii, David W Peate & Ian J Parkinson
Holes drilled into the volcanic and ultrabasic basement of the Izu-Ogasawara and Mariana forearc terranes during Leg 125 provide data on some of the earliest lithosphere created after the start of Eocene subduction in the Western Pacific. The volcanic basement contains three boninite series and one tholeiite series. (1) Eocene low-Ca boninite and low-Ca bronzite andesite pillow lavas and dikes dominate the lowermost part of the deep crustal section through the outer-arc high at Site...

Petrology and geochemistry of the basement boninite series of ODP Site 125-786, supplement to: van der Laan, Sieger R; Arculus, Richard J; Pearce, Julian A; Murton, Bramley J (1992): Petrography, mineral chemistry, and phase relations of the basement Boninite series of Site 786, Izu-Bonin Forearc. In: Fryer, P; Pearce, JA; Stokking, LB; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 125, 171-201

Sieger R van der Laan, Richard J Arculus, Julian A Pearce & Bramley J Murton
The 720 m of igneous basement that was penetrated at Site 786 of Ocean Drilling Program Leg 125 consists of boninite-series volcanics. Bronzite andesites dominate the lithology and primitive magmas of high-Ca, intermediate-Ca, and low-Ca boninite are present in subordinate amounts. Sparsely phyric boninites typically contain olivine and orthopyroxene phenocrysts with Mg numbers [= Mg/(Mg + Fe) in moles] between 86% and 87%. Their high whole-rock Mg numbers, and the absence of zonation in the...

Surface Ocean CO2 Atlas (SOCAT) V1.4, supplement to: Pfeil, Benjamin; Olsen, Are; Bakker, Dorothee C E; Hankin, Steven; Koyuk, Heather; Kozyr, Alexander; Malczyk, Jeremy; Manke, Ansley; Metzl, Nicolas; Sabine, Christopher L; Akl, John; Alin, Simone R; Bellerby, Richard G J; Borges, Alberto Vieira; Boutin, Jacqueline; Brown, Peter J; Cai, Wei-Jun; Chavez, Francisco P; Chen, Arthur; Cosca, Catherine E; Fassbender, Andrea J; Feely, Richard A; González-Dávila, Melchor; Goyet, Catherine; Hardman-Mountford, Nicolas J; Heinze, Christoph; Hood, E Maria; Hoppema, Mario; Hunt, Christopher W; Hydes, David; Ishii, Masao; Johannessen, Truls; Jones, Stephen D; Key, Robert M; Körtzinger, Arne; Landschützer, Peter; Lauvset, Siv K; Lefèvre, Nathalie; Lenton, Andrew; Lourantou, Anna; Merlivat, Liliane; Midorikawa, Takashi; Mintrop, Ludger J; Miyazaki, Chihiro; Murata, Akihiko; Nakadate, Akira; Nakano, Yoshiyuki; Nakaoka, Shin-Ichiro; Nojiri, Yukihiro; Omar, Abdirahman M; Padín, Xose Antonio; Park, Geun-Ha; Paterson, Kristina; Pérez, Fiz F; Pierrot, Denis; Poisson, Alain; Ríos, Aida F; Santana-Casiano, Juana Magdalena; Salisbury, Joe; Sarma, Vedula V S S; Schlitzer, Reiner; Schneider, Bernd; Schuster, Ute; Sieger, Rainer; Skjelvan, Ingunn; Steinhoff, Tobias; Suzuki, Toru; Takahashi, Taro; Tedesco, Kathy; Telszewski, Maciej; Thomas, Helmuth; Tilbrook, Bronte; Tjiputra, Jerry; Vandemark, Doug; Veness, Tony; Wanninkhof, Rik; Watson, Andrew J; Weiss, Ray F; Wong, Chi Shing; Yoshikawa-Inoue, Hisayuki (2013): A uniform, quality controlled Surface Ocean CO2 Atlas (SOCAT). Earth System Science Data, 5(1), 125-143

Benjamin Pfeil, Are Olsen, Dorothee C E Bakker, Steven Hankin, Heather Koyuk, Alexander Kozyr, Jeremy Malczyk, Ansley Manke, Nicolas Metzl, Christopher L Sabine, John Akl, Simone R Alin, Richard G J Bellerby, Alberto Vieira Borges, Jacqueline Boutin, Peter J Brown, Wei-Jun Cai, Francisco P Chavez, Arthur Chen, Catherine E Cosca, Andrea J Fassbender, Richard A Feely, Melchor González-Dávila, Catherine Goyet, Nicolas J Hardman-Mountford … & Hisayuki Yoshikawa-Inoue
A well-documented, publicly available, global data set of surface ocean carbon dioxide (CO2) parameters has been called for by international groups for nearly two decades. The Surface Ocean CO2 Atlas (SOCAT) project was initiated by the international marine carbon science community in 2007 with the aim of providing a comprehensive, publicly available, regularly updated, global data set of marine surface CO2, which had been subject to quality control (QC). Many additional CO2 data, not yet...

Age determination of Paleogene sediments from the Prysz Bay, supplement to: Thierstein, Hans R; MacDougall, J Douglas; Martin, Ellen E; Larsen, Birger; Barron, John A; Baldauf, Jack G (1991): Age determinations of Paleogene Diamictites from Prydz Bay (Site 739), Antarctica, using sr isotopes of mollusks and biostratigraphy of microfossils (diatoms and coccoliths). In: Barron, J; Larsen, B; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 119, 739-745

Hans R Thierstein, J Douglas MacDougall, Ellen E Martin, Birger Larsen, John A Barron & Jack G Baldauf
Age dating of Paleogene diamictites from ODP Site 739 in Prydz Bay with marine microfossils (diatoms and calcareous nannofossils) suggests the build-up of a major East Antarctic ice shield in latest Eocene to earliest Oligocene time, about 35-38 m.y. ago. Strontium isotopic analyses of small mollusk remains found within these diamictites, however, yield younger ages ranging from 29 to 23 Ma (i.e., latest early Oligocene to earliest Miocene). These age discrepancies could be caused by...

Analysis of soils from King George Island and Casey station, Antarctica, supplement to: Bölter, Manfred; Blume, Hans-Peter; Kappen, Ludger (1997): Bodenbiologische Untersuchungen in der maritimen und kontinentalen Antarktis (King George Island und Windmill Islands). Teil 1. Umweltparameter und anorganische Nährstoffe. Polarforschung, 65(1), 41-61

Manfred Bölter, Hans-Peter Blume & Ludger Kappen
A comparative study was carried out on soils of the maritime (Arctowski, King George Island) and the continental (Casey, Wilkes Land) Antarctic. Soil sampIes are described for surface layers (0-10 cm) by their in situ temperature profiles as well as by field and laboratory analyses of grain sizes, pH and nutrient contents. Active cryoturbation is a main factor of mixing processes in surfaces with high silt and clay content. In both regions processes of podzolisation...

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  • 2011
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  • LDEO - Lamont-Doherty Earth Observatory, Columbia University
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