918 Works

Data compilation of VEINS

VEINS Members, Naokazu Ahagon, J Alvarez, O Asthorsson, H Bjoerke, Johan Blindheim, Johannes Briem, W Paul Budgell, B Ellertsen, Eberhard Fahrbach, Arne Foldvik, P Fossum, H Gjoesaeter, H Gronevall, Bogi Hansen, Peter Mosby Haugan, Jens Christian Holst, U Hübner, S Kaartvedt, Yoshie Kasajima, Jouko Launiainen, Harald Loeng, Terje Loyning, Svend-Aage Malmberg, Jens Meincke … & K Westerheim
This data collection contains physical oceanographic and hydrochemistry data from 82 cruises in the frame of the project VEINS -Variability of Exchanges in the Northern Seas.

Neodymium and Strontium chemistry of Arctic Ocean sediments, supplement to: Haley, Brian A; Frank, Martin; Spielhagen, Robert F; Eisenhauer, Anton (2008): Influence of brine formation on Arctic Ocean circulation over the past 15 million years. Nature Geoscience, 1, 68-72

Brian A Haley, Martin Frank, Robert F Spielhagen & Anton Eisenhauer
The early oceanographic history of the Arctic Ocean is important in regulating, and responding to, climatic changes. However, constraints on its oceanographic history preceding the Quaternary (the past 1.8 Myr) have become available only recently, because of the difficulties associated with obtaining continuous sediment records in such a hostile setting. Here, we use the neodymium isotope compositions of two sediment cores recovered near the North Pole to reconstruct over the past ~5 Myr the sources...

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...

Geochemical investigation and determination of hiatuses on Voering Plateau sediment records, supplement to: Bruns, P; Dullo, Wolf Christian; Hay, William W; Frank, Martin; Kubik, Peter W (1998): Hiatuses on Voering Plateau: sedimentary gaps or preservation artifacts? Marine Geology, 145(1-2), 61-84

P Bruns, Wolf Christian Dullo, William W Hay, Martin Frank & Peter W Kubik
The sediments recovered on ODP Leg 104 have been reported to be characterized by hiatuses. The hiatuses were defined by biostratigraphy and were believed to be caused by erosion related to temporary changes of bottom current composition and velocity. They have been associated with major paleoenvironmental changes, reorganization of global deep water production, and increased bottom water flows. Because of the importance of hiatuses for ongoing research, we decided to closely investigate the sedimentation history...

Rare earth elements from the Atlantic Sector, supplement to: Wegner, Anna; Gabrielli, Paolo; Wilhelms-Dick, Dorothee; Ruth, Urs; Kriews, Michael; De Deckker, Patrick; Barbante, Carlo; Cozzi, Giulio; Delmonte, Barbara; Fischer, H (2012): Change in dust variability in the Atlantic sector of Antarctica at the end of the last deglaciation. Climate of the Past, 8(1), 135-147

Anna Wegner, Paolo Gabrielli, Dorothee Wilhelms-Dick, Urs Ruth, Michael Kriews, Patrick De Deckker, Carlo Barbante, Giulio Cozzi, Barbara Delmonte & Hubertus Fischer
We present a Rare Earth Elements (REE) record at decadal resolution determined in the EPICA ice core drilled in Dronning Maud Land (EDML) in the Atlantic Sector of the East Antarctic Plateau, covering the transition from the last glacial age (LGA) to the early Holocene (26 600-7500 yr BP). Additionally, samples from potential source areas (PSAs) for Antarctic dust were analysed for their REE characteristics. The dust provenance is discussed by comparing the REE fingerprints...

Database of the GLAMAP project, supplement to: Vogelsang, Elke; Sarnthein, Michael; Pflaumann, Uwe (2001): d18O Stratigraphy, chronology, and sea surface temperatures of Atlantic sediment records (GLAMAP-2000 Kiel). Berichte-Reports, Institut für Geowissenschaften, Universität Kiel, 13, 13+244 pp.

Elke Vogelsang, Michael Sarnthein & Uwe Pflaumann
A uniform chronology for foraminifera-based sea surface temperature records has been established in more than 120 sediment cores obtained from the equatorial and eastern Atlantic up to the Arctic Ocean. The chronostratigraphy of the last 30,000 years is mainly based on published d18O records and 14C ages from accelerator mass spectrometry, converted into calendar-year ages. The high-precision age control provides the database necessary for the uniform reconstruction of the climate interval of the Last Glacial...

Geochemistry of ODP Sites 123-765 and 123-766, supplement to: Heggie, David T; Boreham, C J; Summons, Roger E (1992): Biomarker and pyrolysis geochemistry of organic matter from Argo and Gascoyne Abyssal Plain sediments, northeastern Indian Ocean. In: Gradstein, FM; Ludden, JN; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 123, 215-224

David T Heggie, C J Boreham & Roger E Summons
The sediments of the Argo and Gascoyne abyssal plains are generally lean in organic matter, are immature, and contain hydrocarbons trapped during sediment deposition rather than those generated during sediment catagenesis. TOC concentrations in the Argo Abyssal Plain Cenozoic sediments are 0.5 wt%, and organic matter appears to be from mixed marine and reworked, degraded, organic matter sources, with the latter being contributed by turbidity flows from the nearby continental margin. TOC concentrations within the...

Late Miocene palaeoflora and palaeoclimate of Lincang (China), supplement to: Jacques, Frédéric M B; Guo, Shuang-Xing; Su, Tao; Xing, Yao-Wu; Huang, Yong-Jiang; Liu, Yu-Sheng Christopher; Ferguson, David-Kay; Zhou, Zhekun (2011): Quantitative reconstruction of the Late Miocene monsoon climates of southwest China: A case study of the Lincang flora from Yunnan Province. Palaeogeography, Palaeoclimatology, Palaeoecology, 304(3-4), 318-327

Frédéric M B Jacques, Shuang-Xing Guo, Tao Su, Yao-Wu Xing, Yong-Jiang Huang, Yu-Sheng Christopher Liu, David-Kay Ferguson & Zhekun Zhou
The Miocene Lincang leaf assemblage is used in this paper as proxy data to reconstruct the palaeoclimate of southwestern Yunnan (SW China) and the evolution of monsoon intensity. Three quantitative methods were chosen for this reconstruction, i.e. Leaf Margin Analysis (LMA), Climate Leaf Analysis Multivariate Program (CLAMP), and the Coexistence Approach (CA). These methods, however, yield inconsistent results, particularly for the precipitation, as also shown in European and other East Asian Cenozoic floras. The wide...

Late Pliocene and Early Pleistocene dinoflagellate cysts and sea surface temperture reconstruction for several IODP and DSDP sites in the North Atlantic, supplement to: De Schepper, Stijn; Fischer, Eva I; Groeneveld, Jeroen; Head, Martin J; Matthiessen, Jens (2011): Deciphering the palaeoecology of Late Pliocene and Early Pleistocene dinoflagellate cysts. Palaeogeography, Palaeoclimatology, Palaeoecology, 309(1-2), 17-32

Stijn De Schepper, Eva I Fischer, Jeroen Groeneveld, Martin J Head & Jens Matthiessen
In an attempt to document the palaeoecological affinities of individual extant and extinct dinoflagellate cysts, Late Pliocene and Early Pleistocene dinoflagellate cyst assemblages have been compared with geochemical data from the same samples. Mg/Ca ratios of Globigerina bulloides were measured to estimate the spring-summer sea-surface temperatures from four North Atlantic IODP/DSDP sites. Currently, our Pliocene-Pleistocene database contains 204 dinoflagellate cyst samples calibrated to geochemical data. This palaeo-database is compared with modern North Atlantic and global...

Stable oxygen isotope and Mg/Ca ratios on Globorotalia inflata, supplement to: Groeneveld, Jeroen; Chiessi, Cristiano Mazur (2011): Mg/Ca ratios of Globorotalia inflata as a recorder of permanent thermocline temperatures in the South Atlantic. Paleoceanography, 26, PA2203

Jeroen Groeneveld & Cristiano Mazur Chiessi
We present a species-specific Mg/Ca-calcification temperature calibration for Globorotalia inflata from a suite of 38 core top samples from the South Atlantic (from 8° to 49°S). G. inflata is a deep-dwelling planktonic foraminifer commonly occurring in subtropical to subpolar conditions, which qualifies it for reconstructions of the permanent thermocline. Apparent calcification depths and calcification temperatures were determined by comparing measured d18O with equilibrium d18O of calcite based on water column properties. Based on our core...

Radiocarbon dataing, stable oxygen isotopes, and Mg/Ca ratios in surface sediment samples of the tropical eastern Indian Ocean, supplement to: Mohtadi, Mahyar; Oppo, Delia W; Lückge, Andreas; De Pol-Holz, Ricardo; Groeneveld, Jeroen; Steinke, Stephan; Hemme, Nils; Hebbeln, Dierk (2011): Reconstructing the thermal structure of the upper ocean: Insights from planktic foraminifera shell chemistry and alkenones in modern sediments of the tropical eastern Indian Ocean. Paleoceanography, 26, PA2119

Mahyar Mohtadi, Delia W Oppo, Andreas Lückge, Ricardo De Pol-Holz, Jeroen Groeneveld, Stephan Steinke, Nils Hemme & Dierk Hebbeln
Shell chemistry of planktic foraminifera and the alkenone unsaturation index in 69 surface sediment samples in the tropical eastern Indian Ocean off West and South Indonesia were studied. Results were compared to modern hydrographic data in order to assess how modern environmental conditions are preserved in sedimentary record, and to determine the best possible proxies to reconstruct seasonality, thermal gradient and upper water column characteristics in this part of the world ocean. Our results imply...

Mid-Pleistocene Mg/Ca, temperature and stable isotopes from Globigerinoides ruber white and Globorotalia inflata of sediment core GeoB3801-6 from the subtropical South Atlantic, supplement to: Rackebrandt, Nick; Kuhnert, Henning; Groeneveld, Jeroen; Bickert, Torsten (2011): Persisting maximum Agulhas leakage during MIS 14 indicated by massive Ethmodiscus oozes in the subtropical South Atlantic. Paleoceanography, 26, PA3202

Nick Rackebrandt, Henning Kuhnert, Jeroen Groeneveld & Torsten Bickert
The glacial marine isotope stage 14 (MIS 14) appears in many climate records as an unusually warm glacial. During this period an almost monospecific, up to 1.5 m thick, laminated layer of the giant diatom Ethmodiscus rex has been deposited below the South Atlantic Subtropical Gyre. This oligotrophic region is today less favorable for diatom growth with sediments typically consisting of calcareous nannofossil oozes. We have reconstructed temperatures and the stable oxygen isotopic compositions of...

Radiocarbon datings and temperature reconstructions of sediment core GeoB10038-4 off SW Sumatra, supplement to: Mohtadi, Mahyar; Lückge, Andreas; Steinke, Stephan; Groeneveld, Jeroen; Hebbeln, Dierk; Westphal, Niko (2010): Late Pleistocene surface and thermocline conditions of the eastern tropical Indian Ocean. Quaternary Science Reviews, 29(7-8), 887-896

Mahyar Mohtadi, Andreas Lückge, Stephan Steinke, Jeroen Groeneveld, Dierk Hebbeln & Niko Westphal
Surface and thermocline conditions of the eastern tropical Indian Ocean were reconstructed through the past glacial-interglacial cycle by using Mg/Ca and alkenone-paleothermometry, stable oxygen isotopes of calcite and seawater, and terrigenous fraction performed on sediment core GeoB 10038-4 off SW Sumatra (~6°S, 103°E, 1819 m water depth). Results show that annual mean surface and thermocline temperatures varied differently and independently, and suggest that surface temperatures have been responding to southern high-latitude climate, whereas the more...

Stable isotopes and Mg/Ca measurements of two sediment cores in the northeastern tropical Atlantic, supplement to: Zarriess, Michelle; Johnstone, Heather J H; Prange, Matthias; Steph, Silke; Groeneveld, Jeroen; Mulitza, Stefan; Mackensen, Andreas (2011): Bipolar seesaw in the northeastern tropical Atlantic during Heinrich stadials. Geophysical Research Letters, 38, L04706

Michelle Zarriess, Heather J H Johnstone, Matthias Prange, Silke Steph, Jeroen Groeneveld, Stefan Mulitza & Andreas Mackensen
Two SST records based on Mg/Ca of G. ruber (pink) from the continental slope off West Africa at 15°N and 12°N shed new light on the thermal bipolar seesaw pattern in the northeastern tropical Atlantic during periods of reduced Atlantic Meridional Overturning Circulation (AMOC) associated with Heinrich stadials H1 to H6. The two records indicate that the latitudinal position of the bipolar seesaw's zero-anomaly line, between cooling in the North and warming in the South,...

Combined effects of solar UV radiation and CO2-induced seawater acidification on photosynthetic carbon fixation of phytoplankton assemblages in the South China Sea, 2010, supplement to: Wu, YaPing; Gao, Kunshan (2010): Combined effects of solar UV radiation and CO2-induced seawater acidification on photosynthetic carbon fixation of phytoplankton assemblages in the South China Sea. Chinese Science Bulletin, 55(32), 3680-3686

YaPing Wu & Kunshan Gao
We carried out short term pCO2/pH perturbation experiments in the coastal waters of the South China Sea to evaluate the combined effects of seawater acidification (low pH/high pCO2) and solar UV radiation (UVR, 280-400 nm) on photosynthetic carbon fixation of phytoplankton assemblages. Under photosynthetically active radiation (PAR) alone treatments, reduced pCO2 (190 ppmv) with increased pH resulted in a significant decrease in the photosynthetic carbon fixation rate (about 23%), while enriched pCO2 (700 ppmv) with...

Seawater carbonate chemistry and photosynthetic response of Emiliania huxleyi (CS-369) to UV radiation and elevated temperature duirng experiments, 2011, supplement to: Xu, Kai; Gao, Kunshan; Villafañe, Virginia E; Heibling, E W (2011): Photosynthetic responses of Emiliania huxleyi to UV radiation and elevated temperature: roles of calcified coccoliths. Biogeosciences, 8(6), 1441-1452

Kai Xu, Kunshan Gao, Virginia E Villafañe & E W Heibling
Changes in calcification of coccolithophores may affect their photosynthetic responses to both, ultraviolet radiation (UVR, 280-400 nm) and temperature. We operated semi-continuous cultures of Emiliania huxleyi (strain CS-369) at reduced (0.1 mM, LCa) and ambient (10 mM, HCa) Ca2+ concentrations and, after 148 generations, we exposed cells to six radiation treatments (>280, >295, >305, >320, >350 and >395 nm by using Schott filters) and two temperatures (20 and 25 °C) to examine photosynthesis and calcification...

Temperature and CO2 estimation for the Middle Eocene section of ODP Hole 189-1172A, supplement to: Bijl, Peter K; Houben, Peter; Schouten, Stefan; Bohaty, Steven M; Sluijs, Appy; Reichart, Gert-Jan; Sinninghe Damsté, Jaap S; Brinkhuis, Henk (2010): Transient Middle Eocene atmospheric CO2 and temperature variations. Science, 330(6005), 819-821

Peter K Bijl, Peter Houben, Stefan Schouten, Steven M Bohaty, Appy Sluijs, Gert-Jan Reichart, Jaap S Sinninghe Damsté & Henk Brinkhuis
The long-term warmth of the Eocene (~56 to 34 million years ago) is commonly associated with elevated partial pressure of atmospheric carbon dioxide (pCO2). However, a direct relationship between the two has not been established for short-term climate perturbations. We reconstructed changes in both pCO2 and temperature over an episode of transient global warming called the Middle Eocene Climatic Optimum (MECO; ~40 million years ago). Organic molecular paleothermometry indicates a warming of southwest Pacific sea...

Geochemical and palynological measurements from the ODP Leg 189 at Site 1172 on the East Tasman Plateau, supplement to: Sluijs, Appy; Bijl, Peter K; Schouten, Stefan; Röhl, Ursula; Reichart, Gert-Jan; Brinkhuis, Henk (2011): Southern ocean warming, sea level and hydrological change during the Paleocene-Eocene thermal maximum. Climate of the Past, 7(1), 47-61

Appy Sluijs, Peter K Bijl, Stefan Schouten, Ursula Röhl, Gert-Jan Reichart & Henk Brinkhuis
A brief (~150 kyr) period of widespread global average surface warming marks the transition between the Paleocene and Eocene epochs, ~56 million years ago. This so-called "Paleocene-Eocene thermal maximum" (PETM) is associated with the massive injection of 13C-depleted carbon, reflected in a negative carbon isotope excursion (CIE). Biotic responses include a global abundance peak (acme) of the subtropical dinoflagellate Apectodinium. Here we identify the PETM in a marine sedimentary sequence deposited on the East Tasman...

Sea surface temperture reconstruction for ODP Site 189-1172, supplement to: Bijl, Peter K; Schouten, Stefan; Sluijs, Appy; Reichart, Gert-Jan; Zachos, James C; Brinkhuis, Henk (2009): Early Palaeogene temperature evolution of the southwest Pacific Ocean. Nature, 461, 776-779

Peter K Bijl, Stefan Schouten, Appy Sluijs, Gert-Jan Reichart, James C Zachos & Henk Brinkhuis
Relative to the present day, meridional temperature gradients in the Early Eocene age (~56-53 Myr ago) were unusually low, with slightly warmer equatorial regions (Pearson et al., 2007, doi:10.1130/G23175A.1 ) but with much warmer subtropical Arctic (Sluijs et al., 2008, doi:10.1029/2007PA001495) and mid-latitude (Sluijs et al., 2007, doi:10.1038/nature06400) climates. By the end of the Eocene epoch (~34 Myr ago), the first major Antarctic ice sheets had appeared (Zachos et al., 1992, doi:10.1130/0091-7613(1992)020<0569:EOISEO>2.3.CO;2; Barker et al.,...

Geochemistry of peridotites from ODP Leg 125 diapiric serpentinites, supplement to: Ishii, Teruaki; Robinson, Paul T; Maekawa, Hirokazu; Fiske, Richard (1992): Petrological studies of peridotites from diapiric serpentinite seamounts in the Izu-Ogasawara-Mariana 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, 445-485

Teruaki Ishii, Paul T Robinson, Hirokazu Maekawa & Richard Fiske
Refractory spinel peridotites were drilled during Leg 125 from two diapiric serpentinite seamounts: Conical Seamount in the Mariana forearc (Sites 778-780) and Torishima Forearc Seamount (Sites 783-784) in the Izu-Ogasawara forearc. Harzburgite is the predominant rock type in the recovered samples, with subordinate dunite; no lherzolite was found.The harzburgite is diopside-free to sparsely diopside-bearing, with modal percentages of diopside that range from 0% to 2%. Spinels in the harzburgites are chrome-rich (Cr/[Cr + Al] =...

Miocene benthic foraminifera of the Japan Sea, supplement to: Nomura, Ritsuo (1992): Miocene benthic foraminifers at Sites 794, 795, and 797 in the Sea of Japan with reference to the Foram Sharp Line in the Honshu Arc. In: Pisciotto, KA; Ingle, JCJr.; von Breymann, MT; Barron, J; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 127/128(1), 493-540

Ritsuo Nomura
Benthic foraminifers from ODP Sites 794 and 797 (Yamato Basin) and Site 795 (Japan Basin) were investigated to clarify the Miocene paleoceanography and paleobathymetry of the Sea of Japan. Miocene benthic foraminifers from the three sites are generally characterized by agglutinated deep-water species apparently living below calcium carbonate compensation depth (CCD), except for faunas indicative of environments above the CCD in the early middle Miocene (~14 to ~17 Ma) and redeposited faunas in upper Miocene...

Geochemistry of ODP Leg 125 peridotites, supplement to: Parkinson, Ian J; Pearce, Julian A; Thirlwall, Matthew F; Johnson, Kevin T M; Ingram, Gerry (1992): Trace element geochemistry of peridotites from the Izu-Bonin-Mariana 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, 487-506

Ian J Parkinson, Julian A Pearce, Matthew F Thirlwall, Kevin T M Johnson & Gerry Ingram
Trace element analyses (first-series transition elements, Ti, Rb, Sr, Zr, Y, Nb, and REE) were carried out on whole rocks and minerals from 10 peridotite samples from both Conical Seamount in the Mariana forearc and Torishima Forearc Seamount in the Izu-Bonin forearc using a combination of XRF, ID-MS, ICP-MS, and ion microprobe. The concentrations of incompatible trace elements are generally low, reflecting the highly residual nature of the peridotites and their low clinopyroxene content (<2%)....

Composition of suspended matter and bottom sediments from the North Dvina mouth area, supplement to: Kravchishina, Marina D; Shevchenko, Vladimir P; Filippov, Alexander S; Novigatsky, Alexander N; Dara, O M; Alekseeva, Tatyana N; Bobrov, Vyacheslav A (2010): Composition of the suspended particulate matter at the Severnaya Dvina River mouth (White Sea) during the spring flood period. Translated from Okeanologiya, 2010, 50(3), 396-416, Oceanology, 50(3), 365-385

Marina D Kravchishina, Vladimir P Shevchenko, Alexander S Filippov, Alexander N Novigatsky, O M Dara, Tatyana N Alekseeva & Vyacheslav A Bobrov
Grain-size, mineral and chemical compositions of suspended particulate matter (SPM) from waters of the Severnaya (North) Dvina River mouth area during the spring flood in May 2004 is studied. Data published on composition of riverine SPM in the White Sea basin are very poor. The spring flood period when more than half of annual runoff is supplied from the river to the sea in during short time is understood more poorly. The paper considers comparison...

Age derminations of rocks from the Read Mountains, Antarctica, supplement to: Buggisch, Werner; Kleinschmidt, Georg; Kreuzer, Hans; Krumm, Stefan H (1994): Metamorphic and structural evolution of the southern Shackleton Range during the Ross orogeny. Polarforschung, 63(1), 33-56

Werner Buggisch, Georg Kleinschmidt, Hans Kreuzer & Stefan H Krumm
The Shackleton Range can be divided into three major units: (1) The East Antarctic Craton and its sedimentary cover (Read Group and Watts Needle Formation), (2) the allochthonous Mount Wegener Nappe (Mount Wegener Formation, Stephenson Bastion Formation, and Wyeth Heights Formation), and (3) the northern belt (basement: Pioneer and Stratton Groups, sedimentary cover: Haskard Highlands Formation (allochthonous?), and Blaiklock Glacier Group). The northern units are thrust over the southern ones. The thrusting is related to...

Victoria Land Antarctica Pb and Ba concentrations and Pb isotope ratios 1872-1994 CE, supplement to: Van de Velde, K; Vallelonga, Paul T; Candelone, Jean-Pierre; Rosman, K J R; Gaspari, Vania; Cozzi, Giulio; Barbante, Carlo; Udisti, Roberto; Cescon, Paolo; Boutron, Claude F (2005): Pb isotope record over one century in snow from Victoria Land, Antarctica. Earth and Planetary Science Letters, 232, 95-108

K Van de Velde, Paul T Vallelonga, Jean-Pierre Candelone, K J R Rosman, Vania Gaspari, Giulio Cozzi, Carlo Barbante, Roberto Udisti, Paolo Cescon & Claude F Boutron
Pb and Ba concentrations and Pb isotopic compositions are reported for firn core and snow pit samples from Victoria Land, Antarctica, dating from 1872 AD to 1994 AD. From variations in Pb/Ba ratios and Pb isotopic compositions, two periods of major Pb enhancements were identified, from 1891 to 1908 AD and from 1948 to 1994 AD. The earlier pollution event is attributed to Pb emissions from non-ferrous metal production and coal combustion in the Southern...

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  • 2011
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    918