Search Results - "De Lange, G.J"

Diagenetic changes of magnetic and geochemical signals by anaerobic methane oxidation in sediments of the Zambezi deep-sea fan (SW Indian Ocean) by März, C., Hoffmann, J., Bleil, U., de Lange, G.J., Kasten, S.

“…The Zambezi deep-sea fan, the largest of its kind along the east African continental margin, is poorly studied to date, despite its potential to record marine…”
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Evaluation and application of foraminiferal element/calcium ratios: Assessing riverine fluxes and environmental conditions during sapropel S1 in the Southeastern Mediterranean by Mojtahid, M., Hennekam, R., De Nooijer, L., Reichart, G.-J., Jorissen, F., Boer, W., Le Houedec, S., De Lange, G.J.

“…Paleostudies often rely on foraminiferal calcite chemistry, which reflect past sea water condition through so-called proxy relationships. One way to evaluate…”
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Fluid–sediment interactions at Eastern Mediterranean mud volcanoes: a stable isotope study from ODP Leg 160 by Dählmann, A, de Lange, G.J

“…Pore fluids from two ODP sites at Eastern Mediterranean mud volcanoes have been analyzed for their Cl concentration and their δ 18O and δD isotopic…”
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Phosphorus burial as a function of paleoproductivity and redox conditions in Arabian Sea sediments by Schenau, S.J., Reichart, G.J., De Lange, G.J.

“…In this study the response of sedimentary phosphorus (P) burial to changes in primary productivity and bottom water oxygen concentrations during the Late…”
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Phosphogenesis and active phosphorite formation in sediments from the Arabian Sea oxygen minimum zone by Schenau, S.J, Slomp, C.P, De Lange, G.J

“…In this study, porewater chemistry, solid-phase analysis and microscopic observations were combined to evaluate phosphogenesis in three boxcores located within…”
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Present-day coccolith fluxes recorded in central eastern Mediterranean sediment traps and surface sediments by Ziveri, P, Rutten, A, de Lange, G.J, Thomson, J, Corselli, C

“…Two sediment traps were deployed in time series collection from November 1991 to August 1994 at 3000 and 3500 m, respectively, above and below the oxygenated…”
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Active post-depositional oxidation of the most recent sapropel (S1) in sediments of the eastern Mediterranean Sea by van Santvoort, P.J.M., de Lange, G.J., Thomson, J., Cussen, H., Wilson, T.R.S., Krom, M.D., Ströhle, K.

“…Over a wide area of the eastern Mediterranean basin, two Mn-rich layers have been observed above the most recent sapropel (S1), one immediately above the…”
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Organic matter and trace element rich sapropels and black shales: a geochemical comparison by Nijenhuis, I.A, Bosch, H.-J, Sinninghe Damsté, J.S, Brumsack, H.-J, De Lange, G.J

“…A distinct Pliocene eastern Mediterranean sapropel (i-282), recovered from three Ocean Drilling Program (ODP) Leg 160 Sites, has been investigated for its…”
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Elemental and major biochemical changes across an oxidation front in a relict turbidite: An oxygen effect by Cowie, G.L., Hedges, J.I., Prahl, F.G., de Lange, G.J.

“…The elemental and major biochemical compositions of the relict f-turbidite sampled in two cores from the Madeira Abyssal Plain were determined. This…”
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Eastern-Mediterranean ventilation variability during sapropel S1 formation, evaluated at two sites influenced by deep-water formation from Adriatic and Aegean Seas by Filippidi, A., Triantaphyllou, M.V., De Lange, G.J.

“…Present-day bottom-water ventilation in the Eastern Mediterranean basin occurs through deep-water convection originating from the two marginal basins, i.e…”
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Tephrochronology of the astronomically-tuned KC01B deep-sea core, Ionian Sea: insights into the explosive activity of the Central Mediterranean area during the last 200 ka by Insinga, D.D., Tamburrino, S., Lirer, F., Vezzoli, L., Barra, M., De Lange, G.J., Tiepolo, M., Vallefuoco, M., Mazzola, S., Sprovieri, M.

“…We present a major, trace and rare earth element characterization of single glass shards from fifteen tephra layers found in the astronomically-tuned KC01B…”
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Role of bacteria in marine barite precipitation: a case study using Mediterranean seawater by Torres-Crespo, N, Martínez-Ruiz, F, González-Muñoz, M T, Bedmar, E J, De Lange, G J, Jroundi, F

“…Marine bacteria isolated from natural seawater were used to test their capacity to promote barite precipitation under laboratory conditions. Seawater samples…”
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Seasonality variations in the Central Mediterranean during climate change events in the Late Holocene by Goudeau, M-L. S., Reichart, G.-J., Wit, J.C., de Nooijer, L.J., Grauel, A.-L., Bernasconi, S.M., de Lange, G.J.

“…Holocene rapid climate change (RCC) events, such as the Little Ice Age (LIA), are thought to have influenced average annual temperatures only marginally, but…”
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Trace-elemental derived paleoceanographic and paleoclimatic conditions for Pleistocene Eastern Mediterranean sapropels by Gallego-Torres, D., Martinez-Ruiz, F., De Lange, G.J., Jimenez-Espejo, F.J., Ortega-Huertas, M.

“…Eastern Mediterranean sediments are characterized by cyclic deposition of organic-rich sediments known as sapropels. Enhanced primary productivity combined…”
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Microbial methane oxidation and sulfate reduction at cold seeps of the deep Eastern Mediterranean Sea by Omoregie, Enoma O., Niemann, Helge, Mastalerz, Vincent, de Lange, Gert J., Stadnitskaia, Alina, Mascle, Jean, Foucher, Jean-Paul, Boetius, Antje

“…The Eastern Mediterranean hosts a variety of active cold seep systems, such as gas chimneys, mud volcanoes and pockmarks, in water depths of 500 to 3200 m. As…”
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Biogenic barium and the detrital Ba/Al ratio: a comparison of their direct and indirect determination by Reitz, A, Pfeifer, K, de Lange, G.J, Klump, J

“…Biogenic barium concentrations obtained from direct determination by a three-step sequential extraction procedure are compared to those obtained from the…”
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Carbon geochemistry of cold seeps: Methane fluxes and transformation in sediments from Kazan mud volcano, eastern Mediterranean Sea by Haese, Ralf R., Meile, Christof, Van Cappellen, Philippe, De Lange, Gert J.

“…Despite growing concerns about potential enhancement of global warming and slope failure by methane produced by gas hydrate dissociation, much uncertainty…”
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Palaeoproductivity and post-depositional aerobic organic matter decay reflected by dinoflagellate cyst assemblages of the Eastern Mediterranean S1 sapropel by Zonneveld, K.A.F., Versteegh, G.J.M., de Lange, G.J.

“…In the reconstruction of bioproductivity in surface waters the extent to which a proxy has been diagenetically altered is often a matter of debate. Here we…”
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Pore water geochemistry of eastern Mediterranean mud volcanoes: Implications for fluid transport and fluid origin by Haese, Ralf R., Hensen, Christian, de Lange, Gert J.

“…The pore water chemistry of mud volcanoes from the Olimpi Mud Volcano Field and the Anaximander Mountains in the eastern Mediterranean Sea have been studied…”
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Barium accumulation in the Arabian Sea: controls on barite preservation in marine sediments by Schenau, S.J, Prins, M.A, De Lange, G.J, Monnin, C

“…In this study, a new sequential extraction technique is used to investigate the particulate barium (Ba) phases in sediments from the Arabian Sea to determine…”
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