703 Works

Age determinations from northwest Russia, supplement to: Larsen, Eiliv; Lyså, Astrid; Demidov, Igor; Funder, Svend; Houmark-Nielsen, Michael; Kjær, Kurt Henrik; Murray, Andrew Sean (1999): Age and extent of the Scandinavian ice sheet in northwest Russia. Boreas, 28(1), 115-132

Eiliv Larsen, Astrid Lyså, Igor Demidov, Svend Funder, Michael Houmark-Nielsen, Kurt Henrik Kjær & Andrew Sean Murray
The last glacial maximum (LGM) of the Scandinavian ice sheet in the Arkhangelsk region has been identified morphologically as ridges and hummocks in an otherwise flat topography. Stratigraphically the limit is marked by the presence of till above Mikhulinian (last interglacial) sediments inside the ridges and by the absence of till outside the ridges. During the LGM, ice flowed into the region from the north and northwest forming a lobe in the Dvina--Vaga depression. The...

Age determination of sediment from Lake Komi, supplement to: Mangerud, Jan; Astakhov, Valery I; Murray, Andrew Sean; Svendsen, John Inge (2001): The chronology of a large ice-dammed lake and the Barents-Kara ice sheet advances, northern Russia. Global and Planetary Change, QUEEN special issue, 31(1), 321-336

Jan Mangerud, Valery I Astakhov, Andrew Sean Murray & John Inge Svendsen
Beach and shoreface sediments deposited in the more than 800-km long ice-dammed Lake Komi in northern European Russia have been investigated and dated. The lake flooded the lowland areas between the Barents-Kara Ice Sheet in the north and the continental drainage divide in the south. Shoreline facies have been dated by 18 optical stimulated luminescence (OSL) dates, most of which are closely grouped in the range 80-100 ka, with a mean of 88 +/- 3...

Sedimentology and stable oxygen isotope ratios of foraminifera from cores of the Porcupine Seabight, Northeast Atlantic, supplement to: Rüggeberg, Andres; Dorschel, Boris; Dullo, Wolf Christian; Hebbeln, Dierk (2005): Sedimentary patterns in the vicinity of a carbonate mound in the Hovland Mound Province, northern Porcupine Seabight. In: Freiwald, A & Roberts, JM (eds.), 2005, Cold-water Corals and Ecosystems, Springer-Verlag, Berlin, Heidelberg, 87-112

Andres Rüggeberg, Boris Dorschel, Wolf Christian Dullo & Dierk Hebbeln
Large carbonate mound structures have been discovered in the northern Porcupine Seabight (Northeast Atlantic) at depths between 600 and 1000 m. These mounds are associated with the growth of deep-sea corals Lophelia pertusa and Madrepra oculata. In this study, three sediment cores have been analysed. They are from locations close to Propeller Mound, a 150 m high ridge-like feature covered with a cold-water coral ecosystem at its upper flanks. The investigations are concentrated on grain-size...

Benthic foraminifera, stable isotope ratios and carbon concentrations of sediment cores from Propeller Mound and Porcupine Srabight, supplement to: Rüggeberg, Andres; Dullo, Wolf Christian; Dorschel, Boris; Hebbeln, Dierk (2007): Environmental changes and growth history of a cold-water carbonate mound (Propeller Mound, Porcupine Seabight). International Journal of Earth Sciences, 96(1), 57-72

Andres Rüggeberg, Wolf Christian Dullo, Boris Dorschel & Dierk Hebbeln
On- and off-mound sediment cores from Propeller Mound (Hovland Mound province, Porcupine Seabight) were analysed to understand better the evolution of a carbonate mound. The evaluation of benthic foraminiferal assemblages from the off-mound position helps to determine the changes of the environmental controls on Propeller Mound in glacial and interglacial times. Two different assemblages describe the Holocene and Marine Isotope Stage (MIS) 2 and late MIS 3 (~31 kyr BP). The different assemblages are related...

Stable oxygen isotope ratios and grain size analyses of sediment cores from the Propeller Mound, Northeast Atlantic, supplement to: Dorschel, Boris; Hebbeln, Dierk; Rüggeberg, Andres; Dullo, Wolf Christian; Freiwald, André (2005): Growth and Erosion of a Cold-Water Coral Covered Carbonate Mound in the Northeast Atlantic during the Late Pleistocene and Holocene. Earth and Planetary Science Letters, 233(1-2), 33-44

Boris Dorschel, Dierk Hebbeln, Andres Rüggeberg & Wolf Christian Dullo
The first detailed stratigraphic record from a deep-water carbonate mound in the Northeast Atlantic based on absolute datings (U/Th and AMS 14C) and stable oxygen isotope records reveals that its top sediment sequences are condensed by numerous hiatuses. According to stable isotope data, mainly sediments with an intermediate signal are preserved on the mound, while almost all fully glacial and interglacial sediments have either not been deposited or have been eroded later. The resulting hiatuses...

Planktonic foraminiferal abundance and flux in the Porcupine Seabight, Northeast Atlantic

Almuth Harbers, Joachim Schönfeld, Andres Rüggeberg & Olaf Pfannkuche
Modern planktonic foraminifera collected with a sediment trap and subfossil assemblages from surface sediments from Galway Mound in the Porcupine Seabight off southwestern Ireland, northeastern Atlantic, were studied to show recent assemblage variations. The sediment trap operated from April to August 2004 and covers the spring bloom and early summer conditions with sampling intervals of 8 days. Eleven different species were recorded. Glorotalia hirsuta, Turborotalita quinqueloba and Globigerinita glutinata appeared predominately in spring. Neogloboquadrina incompta,...

Carbonate sedimentology of the Propeller Mound, Northeast Atlantic, supplement to: Dorschel, Boris; Hebbeln, Dierk; Rüggeberg, Andres; Dullo, Wolf Christian (2007): Carbonate budget of a cold-water coral carbonate mound: Propeller Mound, Porcupine Seabight. International Journal of Earth Sciences, 96(1), 73-83

Boris Dorschel, Dierk Hebbeln, Andres Rüggeberg & Wolf Christian Dullo
High resolution studies from the Propeller Mound, a cold-water coral carbonate mound in the NE Atlantic, show that this mound consists of >50% carbonate justifying the name "carbonate mound". Through the last ~300,000 years approximately one third of the carbonate has been contributed by cold-water corals, namely Lophelia pertusa and Madrepora oculata. This coral bound contribution to the carbonate budget of Propeller Mound is probably accompanied by an unknown portion of sediments buffered from suspension...

Chemistry and age determination of basement fluids from Juan de Fuca Ridge, supplement to: Elderfield, Henry; Wheat, C Geoffrey; Mottl, Michael J; Monnin, Christophe; Spiro, Baruch (1999): Fluid and geochemical transport through oceanic crust: a transect across the eastern flank of the Juan de Fuca Ridge. Earth and Planetary Science Letters, 172(1-2), 151-165

Henry Elderfield, C Geoffrey Wheat, Michael J Mottl, Christophe Monnin & Baruch Spiro
The geochemical implications of thermally driven flow of seawater through oceanic crust on the mid-ocean ridge flank have been examined on a well-studied 80 km transect across the eastern flank of the Juan de Fuca Ridge at 48°N, using porewater and basement fluid samples obtained on ODP Leg 168. Fluid flow is recognised by near-basement reversals in porewater concentration gradients from altered values in the sediment section to seawater-like values in basaltic basement. In general,...

Fluid compositions and mineralogy of precipitates from Mid Atlantic Ridge hydrothermal vents at 4°48'S

Karsten M Haase, Sven Petersen, Andrea Koschinsky, Richard Seifert, Colin W Devey, Robin Keir, Klas S Lackschewitz, Bernd Melchert, Kerstin Perner, Oliver Schmale, J Süling, Nicole Dubilier, Frank Zielinski, Susanne Fretzdorff, Carl-Dieter Garbe-Schönberg, Ulrike Westernstroer, Christopher R German, Timothy M Shank, Dana Yoerger, Olav Giere, Jan Küver, Herwig Marbler, Jule Mawick, Christian Mertens, Uwe Stöber … & Stefan Weber
The effect of volcanic activity on submarine hydrothermal systems has been well documented along fast- and intermediate-spreading centers but not from slow-spreading ridges. Indeed, volcanic eruptions are expected to be rare on slow-spreading axes. Here we report the presence of hydrothermal venting associated with extremely fresh lava flows at an elevated, apparently magmatically robust segment center on the slow-spreading southern Mid-Atlantic Ridge near 5°S. Three high-temperature vent fields have been recognized so far over a...

Under ice shelf photographs from Drescher Inlet (Riiser Larsen Ice Shelf) taken by seal mounted cameras during expedition DRE2003, supplement to: Watanabe, Yuuki; Bornemann, Horst; Liebsch, Nikolai S; Plötz, Joachim; Sato, Katsufumi; Naito, Yasuhiko; Miyazaki, Nobuyuki (2006): Seal-mounted cameras detect invertebrate fauna on the underside of an Antarctic ice shelf. Marine Ecology Progress Series, 309, 297-300

Yuuki Watanabe, Horst Bornemann, Nikolai S Liebsch, Joachim Plötz, Katsufumi Sato, Yasuhiko Naito & Nobuyuki Miyazaki
While modern sampling techniques, such as autonomous underwater vehicles, are increasing our knowledge of the fauna beneath Antarctic sea ice of only a few meters in depth, greater sampling difficulties mean that little is known about the marine life underneath Antarctic ice shelves over 100 m thick. In this study, we present underwater images showing the underside of an Antarctic ice shelf covered by aggregated invertebrate communities, most likely cnidarians and isopods. These images, taken...

Palaeoenvironment records of six sediment cores collected in the Gulf of Carpentaria, supplement to: Chivas, Allan R; Garcia, Adriana; van der Kaars, Sander; Couapel, Martine JJ; Holt, Sabine; Reeves, Jessica M; Wheeler, David J; Switzer, Adam D; Murray-Wallace, Colin V; Banerjee, Debabrata; Price, David M; Wang, Sue X; Pearson, Grant; Edgar, N Terry; Beaufort, Luc; De Deckker, Patrick; Lawson, Ewan; Cecil, C Blaine (2001): Sea-level and environmental changes since the last interglacial in the Gulf of Carpentaria, Australia: an overview. Quaternary International, 83-85, 19-46

Allan R Chivas, Adriana Garcia, Sander van der Kaars, Martine JJ Couapel, Sabine Holt, Jessica M Reeves, David J Wheeler, Adam D Switzer, Colin V Murray-Wallace, Debabrata Banerjee, David M Price, Sue X Wang, Grant Pearson, N Terry Edgar, Luc Beaufort, Patrick De Deckker, Ewan Lawson & C Blaine Cecil
The Gulf of Carpentaria is an epicontinental sea (maximum depth 70 m) between Australia and New Guinea, bordered to the east by Torres Strait (currently 12 m deep) and to the west by the Arafura Sill (53 m below present sea level). Throughout the Quaternary, during times of low sea-level, the Gulf was separated from the open waters of the Indian and Pacific Oceans, forming Lake Carpentaria, an isolation basin, perched above contemporaneous sea-level with...

Weichselian stratigraphy of sediments from the lower Pechora River, supplement to: Henriksen, Mona; Mangerud, Jan; Maslenikova, Olga; Matiouchkov, Alexei; Tveranger, Jan (2001): Weichselian stratigraphy and glaciotectonic deformation along the lower Pechora River, Arctic Russia. Global and Planetary Change, QUEEN special issue, 31(1), 297-319 pp

Mona Henriksen, Jan Mangerud, Olga Maslenikova, Alexei Matiouchkov & Jan Tveranger
A large section near the village of Hongurei on the Pechora River, ca. 100 km inland from the Barents Sea coast, reveals the following stratigraphic record of the last glaciation: The lowest units are lacustrine silt overlain by fluvial sand. These two units are repeated by glaciotectonic upthrusting from the NW. On top of this stacked succession is a till where fabric measurements reflect ice movement from the NE. Above the till is a partly...

Chemical composition of basement rocks from ODP Leg 121, Ninetyeast Ridge, supplement to: Weis, D; Frey, Frederick A; Saunders, A; Gibson, Ian L (1991): Ninetyeast Ridge (Indian Ocean): A 5000 km record of a Dupal mantle plume. Geology, 19(2), 99-102

D Weis, Frederick A Frey, A Saunders & Ian L Gibson
Data and observation from Drifting Program Leg 121 and plate-tectonic reconstructions indicate that the Ninetyeast Ridge (Indian Ocean) was derived from the interaction of a deep-seated Dupal hotspot and a nearby spreading-ridge axis. The 5000-km-long ridge, from lat 34°S to lat 10°N, was drilled at three sites during Leg 121. About 178 m of basalt, >38 to >80 Ma, were recovered from a total penetration of ~310 m. Shipboard petrographic and geochemical studies showed that...

Stable carbon and oxygen isotope record of live benthic foraminifera from Swedish fjords, supplement to: Filipsson, Helena L; Nordberg, Kjell; Gustafsson, Mikael (2004): Seasonal study of d18O and d13C in living (stained) benthic foraminifera from two Swedish fjords. Marine Micropaleontology, 53(1-2), 159-172

Helena L Filipsson, Kjell Nordberg & Mikael Gustafsson
In a previous 16-month seasonal study on living (stained) benthic foraminifera from two fjords on the Swedish west coast, it was reported that foraminifera proliferated in response to phytodetritus input; the strongest response came from the opportunistic species Stainforthia fusiformis. In this study, our objective was to find out if that phytodetritus input resulted in a change in the carbon isotopic composition of the foraminiferal tests. We also wanted to examine if variations in salinity...

Pollen and macroremains from sediment core Aschenhütte, supplement to: Ricken, Werner; Grüger, Eberhard (1988): Vegetationsentwicklung, Paläoböden, Seespiegelschwankungen: Untersuchungen an eem- und weichselzeitlichen Sedimenten vom Südrand des Harzes (Vegetational development, paleosoils and lake level changes: studies on Eemian and Weichselian sediments from the southern borders of the Harz Mountains). Eiszeitalter und Gegenwart, 38(1), 37-51

Werner Ricken & Eberhard Grüger
The Upper Pleistocene sediments of the Aschenhütte sink-hole (west of Herzberg am Harz, Lower Saxony) enable one to make interesting correlations between palynological and geological results. The sequence is composed of limnic-telmatic deposits (Eemain to Lower Weichselian) and loess with paleosoils (Weichselian). Sedimentation started during the hornbeam-dominated phase of the Eemian interglacial period and continued throughout the Eemian, the Weichselian Brörup interstadial (sensu Andersen) and parts of the preceding and the following stadial phases, the...

Age determinations on sediment cores from the North Atlantic, supplement to: Bond, Gerard C; Heinrich, Hartmut; Broecker, Wallace S; Labeyrie, Laurent D; McManus, Jerry F; Andrews, John T; Huson, S; Jantschik, Ruediger; Clasen, Silke; Simet, Christine; Tedesco, Kathy; Klas, Mieczyslawa; Bonani, Georges; Ivy, Susan (1992): Evidence for massive discharges of icebergs into the North Atlantic ocean during the last glacial period. Nature, 360(6401), 245-249

Gerard C Bond, Hartmut Heinrich, Wallace S Broecker, Laurent D Labeyrie, Jerry F McManus, John T Andrews, S Huson, Ruediger Jantschik, Silke Clasen, Christine Simet, Kathy Tedesco, Mieczyslawa Klas, Georges Bonani & Susan Ivy
Sediments in the North Atlantic ocean contain as eries of layers that are rich in ice-rafted debris and unusally poor in foraminifera. Here we present evidence that the most recent six of the 'Heinrich layers', deposited between 14,000 and 70,000 years ago, record marked decreases in sea surface temperature and salinity, decreases in the flux of planktonic forminifera to the sediments, and short-lived, massive discharges of icebergs originating in eastern Canada. The path of the...

Age determination and stable isotope record of planktonic foraminifera from sediments of the Baffin Shelf, supplement to: Andrews, John T; Erlenkeuser, Helmut; Evans, L W; Briggs, W M; Jull, A J Timothy (1991): Meltwater and deglaciation, SE Baffin Shelf (NE margin Laurentide Ice Sheet) between 13.5 and 7 ka: from O and C isotopic data. Paleoceanography, 6(5), 621-637

John T Andrews, Helmut Erlenkeuser, L W Evans, W M Briggs & A J Timothy Jull
Stable isotopic values on planktonic foraminifera in a suite of cores from basins across the SE Baffin Shelf are used to extract a record of meltwater events during Termination I deglaciation. Resolution and Hatton basins lie on the SE Baffin Shelf at water depths > 500 m, seaward of major conduits for ice drainage from the eastern sector of the Laurentide Ice Sheet (LIS). Accelerator mass spectrometry 14C dates are used to constrain our chronology...

Age determinations of sediment cores from the Baffin Shelf, supplement to: Andrews, John T; Evans, L W; Williams, Kerstin M; Briggs, W M; Jull, A J Timothy; Erlenkeuser, Helmut; Hardy, Iris A (1990): Cryosphere/ocean interactions at the margin of the Laurentide ice sheet during the Younger Dryas chron: SE Baffin Shelf, Northwest Territories. Paleoceanography, 5(6), 921-935

John T Andrews, L W Evans, Kerstin M Williams, W M Briggs, A J Timothy Jull, Helmut Erlenkeuser & Iris A Hardy
Cores HU82-034-057 and HU84-035-008, Resolution Basin, SE Baffin Shelf, contain 200 and 450 cm, respectively, of sediment that spans the Younger Dryas chron. In both cores the interval is bracketed by 14C dates on foraminifera or molluscs. These sites were close to the margin of the late Wisconsin (Foxe) ice sheet as it flowed toward the Labrador Sea. Prior to 11 ka, both cores record moderate to high accumulations of foraminifera, relatively high del 18O...

Chemical measurements from the EPICA Dome C core, supplement to: Wolff, Eric W; Fischer, Hubertus; Ruth, Urs; Twarloh, Birthe; Littot, Geneviève C; Mulvaney, Robert; Röthlisberger, Regine; de Angelis, Martine; Boutron, Claude F; Hansson, Margareta E; Jonsell, Ulf; Hutterli, Manuel A; Lambert, Fabrice; Kaufmann, Patrik R; Stauffer, Bernhard; Stocker, Thomas F; Steffensen, Jørgen Peder; Bigler, Matthias; Siggaard-Andersen, Marie-Louise; Udisti, Roberto; Becagli, Silvia; Castellano, Emiliano; Severi, Mirko; Wagenbach, Dietmar; Barbante, Carlo; Gabrielli, Paolo; Gaspari, Vania (2006): Southern Ocean sea-ice extent, productivity and iron flux over the past eight glacial cycles. Nature, 440, 491-496

Eric W Wolff, Hubertus Fischer, Urs Ruth, Birthe Twarloh, Geneviève C Littot, Robert Mulvaney, Regine Röthlisberger, Martine de Angelis, Claude F Boutron, Margareta E Hansson, Ulf Jonsell, Manuel A Hutterli, Fabrice Lambert, Patrik R Kaufmann, Bernhard Stauffer, Thomas F Stocker, Jørgen Peder Steffensen, Matthias Bigler, Marie-Louise Siggaard-Andersen, Roberto Udisti, Silvia Becagli, Emiliano Castellano, Mirko Severi, Dietmar Wagenbach, Carlo Barbante … & Vania Gaspari
Sea ice and dust flux increased greatly in the Southern Ocean during the last glacial period. Palaeorecords provide contradictory evidence about marine productivity in this region, but beyond one glacial cycle, data were sparse. Here we present continuous chemical proxy data spanning the last eight glacial cycles (740,000 years) from the Dome C Antarctic ice core. These data constrain winter sea-ice extent in the Indian Ocean, Southern Ocean biogenic productivity and Patagonian climatic conditions. We...

Data from the EPICA Dome C ice core EDC, supplement to: Augustin, Laurent; Barbante, Carlo; Barnes, Piers R F; Barnola, Jean-Marc; Bigler, Matthias; Castellano, Emiliano; Cattani, Olivier; Chappellaz, Jérôme A; Dahl-Jensen, Dorthe; Delmonte, Barbara; Dreyfus, Gabrielle; Durand, Gael; Falourd, Sonia; Fischer, Hubertus; Flückiger, Jacqueline; Hansson, Margareta E; Huybrechts, Philippe; Jugie, Gérard; Johnsen, Sigfus J; Jouzel, Jean; Kaufmann, Patrik R; Kipfstuhl, Sepp; Lambert, Fabrice; Lipenkov, Vladimir Y; Littot, Geneviève C; Longinelli, Antonio; Lorrain, Reginald D; Maggi, Valter; Masson-Delmotte, Valerie; Miller, Heinz; Mulvaney, Robert; Oerlemans, Johannes; Oerter, Hans; Orombelli, Giuseppe; Parrenin, Frédéric; Peel, David A; Petit, Jean-Robert; Raynaud, Dominique; Ritz, Catherine; Ruth, Urs; Schwander, Jakob; Siegenthaler, Urs; Souchez, Roland; Stauffer, Bernhard; Steffensen, Jørgen Peder; Stenni, Barbara; Stocker, Thomas F; Tabacco, Ignazio; Udisti, Roberto; van de Wal, Roderik S W; van den Broeke, Michiel R; Wilhelms, Frank; Winther, Jan-Gunnar; Wolff, Eric W; Zucchelli, Mario (2004): Eight glacial cycles from an Antarctic ice core. Nature, 429(6992), 623-628

Laurent Augustin, Carlo Barbante, Piers R F Barnes, Jean-Marc Barnola, Matthias Bigler, Emiliano Castellano, Olivier Cattani, Jérôme A Chappellaz, Dorthe Dahl-Jensen, Barbara Delmonte, Gabrielle Dreyfus, Gael Durand, Sonia Falourd, Hubertus Fischer, Jacqueline Flückiger, Margareta E Hansson, Philippe Huybrechts, Gérard Jugie, Sigfus J Johnsen, Jean Jouzel, Patrik R Kaufmann, Sepp Kipfstuhl, Fabrice Lambert, Vladimir Y Lipenkov, Geneviève C Littot … & Mario Zucchelli
The Antarctic Vostok ice core provided compelling evidence of the nature of climate, and of climate feedbacks, over the past 420,000 years. Marine records suggest that the amplitude of climate variability was smaller before that time, but such records are often poorly resolved. Moreover, it is not possible to infer the abundance of greenhouse gases in the atmosphere from marine records. Here we report the recovery of a deep ice core from Dome C, Antarctica,...

Occurrence of hiatuses PH and NH 1 through NH 7 in DSDP holes, supplement to: Keller, Gerta; Barron, John A (1983): Paleoceanographic implications of Miocene deep-sea hiatuses. Geological Society of America Bulletin, 94(5), 590-613

Gerta Keller & John A Barron
Miocene paleoceanographic evolution exhibits major changes resulting from the opening and closing of passages, the subsequent changes in oceanic circulation, and development of major Antarctic glaciation. The consequences and timing of these events can be observed in variations in the distribution of deep-sea hiatuses, sedimentation patterns, and biogeographic distribution of planktic organisms. The opening of the Drake Passage in the latest Oligocene to early Miocene (25-20 Ma) resulted in the establishment of the deep circumpolar...

Diatom biostratigraphy of the Kerguelen Plateau and Prydz Bay, Southern Ocean, supplement to: Baldauf, Jack G; Barron, John A (1991): Diatom biostratigraphy: Kerguelen Plateau and Prydz Bay regions of the Southern Ocean. In: Barron, J; Larsen, B; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 119, 547-598

Jack G Baldauf & John A Barron
Samples were examined for diatoms from 22 holes at 11 sites cored by ODP Leg 119 on the Kerguelen Plateau and in Prydz Bay, East Antarctica. Diatoms were observed in Oligocene through Holocene sediments recovered from the Kerguelen Plateau. The diatom flora from the Kerguelen Plateau is characterized by species such as Azpeitia oligocenica, Rocella gelida, Rocella vigilans, and Synedra jouseana in the Oligocene and Crucidenticula nicobarica, Denticulopsis hustedtii, Nitzschia miocenica, and Thalassiosira miocenica in...

Geochemistry of Indian Ocean tephra and Afro-Arabian lavas, supplement to: Ukstins Peate, Ingrid; Baker, Joel A; Kent, Adam J R; Al-Kadasi, Mohamed; Al-Subbary, Abdulkarim; Ayalew, Dereje; Menzies, Martin (2003): Correlation of Indian Ocean tephra to individual Oligocene silicic eruptions from Afro-Arabian flood volcanism. Earth and Planetary Science Letters, 211(3-4), 311-327

Ingrid Ukstins Peate, Joel A Baker, Adam J R Kent, Mohamed Al-Kadasi, Abdulkarim Al-Subbary, Dereje Ayalew & Martin Menzies
Widespread silicic pyroclastic eruptions of the Oligocene Afro-Arabian flood volcanic province (ignimbrites and airfall tuffs) produced up to 20% of the total flood volcanic stratigraphy (>6*10**4 km**3). Volumes of individual ignimbrites and tuffs exposed on land range from ~150 to >2000 km**3 and eight major units (15-100 m thick) were erupted in <2 Myr, placing these amongst the largest-magnitude silicic pyroclastic eruptions on Earth. They are compositionally distinctive time-stratigraphic markers which were deposited as co-ignimbrite...

Flux data in the Greenland Basin, supplement to: von Bodungen, Bodo; Antia, Avan N; Bauerfeind, Eduard; Haupt, Olaf; Koeve, Wolfgang; Machado, E; Peeken, Ilka; Peinert, Rolf; Reitmeier, Sven; Thomsen, C; Voss, Maren; Wunsch, M; Zeller, Ute; Zeitzschel, Bernt (1995): Pelagic processes and vertical flux of particles: an overview of a long-term comparative study in the Norwegian Sea and Greenland Sea. Geologische Rundschau, 84(1), 11-27

Bodo von Bodungen, Avan N Antia, Eduard Bauerfeind, Olaf Haupt, Wolfgang Koeve, E Machado, Ilka Peeken, Rolf Peinert, Sven Reitmeier, C Thomsen, Maren Voss, M Wunsch, Ute Zeller & Bernt Zeitzschel
Pelagic processes and their relation to vertical flux have been studied in the Norwegian and Greenland Seas since 1986. Results of long-term sediment trap deployments and adjoining process studies are presented, and the underlying methodological and conceptional background is discussed. Recent extension of these investigations at the Barents Sea continental slope are also presented. With similar conditions of input irradiation and nutrient conditions, the Norwegian and Greenland Seas exhibit comparable mean annual rates of new...

Age determination of sediment cores C23-81 and EN32-PC6, supplement to: Broecker, Wallace S; Andree, Michael; Wolfli, Willy; Oeschger, Hans; Bonani, Georges; Kennett, James P; Peteet, Dorothy M (1988): The chronology of the last deglaciation: implications to the cause of the Younger Dryas event. Paleoceanography, 3(1), 1-19

Wallace S Broecker, Michael Andree, Willy Wolfli, Hans Oeschger, Georges Bonani, James P Kennett & Dorothy M Peteet
It has long been recognized that the transition from the last glacial to the present interglacial was punctuated by a brief and intense return to cold conditions. This extraordinary event, referred to by European palynologists as the Younger Dryas, was centered in the northern Atlantic basin. Evidence is accumulating that it may have been initiated and terminated by changes in the mode of operation of the northern Atlantic Ocean. Further, it appears that these mode...

Registration Year

  • 2009

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  • Collection

Data Centers

  • ETH Zürich Research Collection