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| Leicher, Niklas; Zanchetta, Giovanni; Sulpizio, Roberto; Giaccio, Biagio; Wagner, Bernd; Nomade, Sebastien; Francke, Alexander; Del Carlo, Paola. |
| A tephrostratigraphic record covering the Marine Isotope Stages (MIS) 1-15 was established for the DEEP site record of Lake Ohrid (Macedonia and Albania). Major element analyses (energy dispersive spectroscopy (EDS) and wavelength-dispersive spectroscopy (WDS)) were carried out on juvenile fragments extracted from 12 tephra layers (OH-DP-0115 to OH-DP-2060). The geochemical analyses of the glass shards of all of these layers suggest an origin in the Italian volcanic provinces. They include the Y-3 (OH-DP-0115, 26.68-29.42 ka cal BP), the Campanian Ignimbrite-Y-5 (OH-DP-0169, 39.6 +/- 0.1 ka), and the X-6 (OH-DP-0404, 109 +/- 2 ka) from the Campanian volcanoes, the P-11 of Pantelleria (OH-DP-0499, 133.5 +/- 2 ka), the Vico B (OH-DP-0617, 162 +/- 6 ka) from... |
| Tipo: Text |
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| Ano: 2016 |
URL: https://archimer.ifremer.fr/doc/00421/53283/54292.pdf |
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| Francke, Alexander; Holtvoeth, Jens; Codilean, Alexandru; Lacey, Jack H.; Bayon, Germain; Dosseto, Anthony. |
| Understanding and quantifying the processes and geochemical cycles associated with catchment erosion, the development of soils and weathering horizons, and terrestrial habitat change beyond the scales of modern observations remain challenging. Such research, however, has become increasingly important to help predict future landscape change in light of increasing land use and rapid global warming. We herein review organic and inorganic geochemical tools applied to depositional archives to better understand various aspects of landscape evolution on geological time scales. We highlight the potentials and limitations of inorganic geochemical analytical methods, such as major element geochemistry, metal and radiogenic isotopes, and in-situ cosmogenic nuclides,... |
| Tipo: Text |
Palavras-chave: Quaternary landscape evolution; Catchment erosion; Terrestrial habitat change; Land use; Fluvial; Lacustrine; Inorganic geochemistry; Organic geochemistry; Radiogenic isotopes; Metal isotopes; Uranium isotopes; Cosmogenic nuclides. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00632/74383/74084.pdf |
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| Zhang, Xiaosen; Reed, Jane; Wagner, Bernd; Francke, Alexander; Levkov, Zlatko. |
| The juncture between the west-east and north-south contrasting Holocene climatic domains across the Mediterranean is complex and poorly understood. Diatom analysis of Lake Dojran (Republic of Macedonia/Greece) provides a new insight into lake levels and trophic status during the Lateglacial and Holocene periods in the northeastern Mediterranean. Following a very shallow or even desiccated state at the core base at ca. 12,500 cal yr BP, indicated by sedimentological and hydro-acoustic data, diatoms indicate lake infilling, from a shallow state with abundant benthos to a plankton-dominated relatively high lake level and eutrophic state thereafter. Diatom-inferred shallowing between ca. 12,400-12,000 cal yr BP and a very low lake level and eutrophic,... |
| Tipo: Text |
Palavras-chave: Palaeoclimate; Diatom; Lake Dojran; Mediterranean; Balkans; Younger Dryas; Holocene. |
| Ano: 2014 |
URL: https://archimer.ifremer.fr/doc/00289/40062/39293.pdf |
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