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Found 427 datasets

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Environmental change indicated by grain-size variations and trace elements: An example from the sandy-loess sediments from the Doroshivtsy site (Ukraine) Spatial

The recently discovered loess section of Doroshivtsy became famous due to archeological findings of the Gravettian. The profile represents a about 9 m sequence of sandy loess, intercalated by more humic horizons. It is situated in a flat gully and at an undercut slope of the Dniester River close to the village Doroshivtsy in the south-western Ukraine. Radiocarbon dating and luminescence ages are conclusive within the expected age range of the Gravettian period (22-28 ka). The loess section is composed...
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Geoarchäologische Untersuchungen in Ságvár (Ungarn) Spatial

Im Rahmen des SFB806 ‘Our way to Europe’ wurden im Herbst 2013 nahe der jungpaläolithischen archäologischen Stätte ‚Ságvár‘ (Ungarn) zwei Löss-Sequenzen beprobt. Die Profile befinden sich auf einer Hügekette südöstlich des Balaton in ca. 228 m Höhe an einem Hohlweg. Das erste Profil befindet sich auf einer Hügelkuppe, das zweite ca. 30 m hangabwärts. An den Sedimentproben wurden Korngrößenanalysen mittels Laserbeugung und geochemische Analysen mittels RFA Spektroskopie durchgeführt. Die...
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Influence of HCl pretreatment on laser diffraction measurements

Sample pretreatment methods in grain size (GS) analyses differ and their influence on GS distributions has been subject of controversial discussions. The standard sample preparation usually comprises the disaggregation into single primary particles. The organic binding material is oxidized by hydrogen peroxide (H2O2) and the containing carbonates are dissolved by hydrochloric acid (HCl). However, laser diffraction measurements of calcified sediment sequences or sediments with high contents of organic matter...
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Loess and loess-like sediments from the foothills of the Banat Mountains, Romania – Examples from loess sections and Paleolithic sites

New investigations from loess and loess-like sediments in the Western Plain of Romania provide evidences for a deeper insight and connection between long loess sections of the lowlands (Semlac) and short sections from the Carpathian foothills (Romanesti and Cosava). While the long loess sections provide evidence concerning climatic and environmental change since the middle Pleistocene the short sequences from the foothills include Paleolithic sites give information especially for the interstadial of the...
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Aeolian dynamics at the Orlovat loess-paleosol sequence, northern Serbia, based on detailed textural and geochemical evidence doi Spatial

Previous investigations showed that the Orlovat loess–paleosol section, northern Serbia, is characterized by irregularities in sedimentological properties, magnetic susceptibility and color of the sediment. Here, we applied granulometric analysis and X-ray fluorescence (XRF) analyses to study how the sedimentation at the Orlovat site was conditioned by specific geomorphological or climatic conditions. Grain-size analysis is an established method and one of the most frequently used paleoenvironmental proxies...
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Environmental change indicated by grain-size variations and trace elements: examples from two different sections - the sandy-loess sediments from the Doroshivtsy site (Ukraine) and the loess section Semlac (Romania) doi

Loess sequences provide important and at least a partial continuous record of Quaternary palaeoenvironmental change; some of the sequences even bury archaeological remains. In addition, loess-palaeosol sequences provide valuable information concerning environmental change and climate evolution. In this study, we compare two sections: (1) The Middle to Late Pleistocene loesspaleosol section of Semlac in western Romania (MIS 10 – 1), and (2) the sandy-loess section of Doroshivtsy in western Ukraine (MIS...
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Testing feldspar against quartz luminescence dating of the sandy loess sediments from the Doroshivtsy site (Ukraine) doi

Post-infrared infrared stimulated luminescence (pIRIR) dating has reactivated the use of feldspar minerals to date Pleistocene deposits. We compared pIRIR stimulation measured at 290 °C (pIRIR290) of coarse grain feldspar (100–200 μm) and optically stimulated luminescence (OSL) of coarse grain quartz (100–150 μm) with radiocarbon dating. The samples were taken from the lower part of the Doroshivtsy sandy loess sequence, which contains Gravettian artefact layers. The site is one of the very few sections in...
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GIS-Based Automated Landform Classification for Analysis of Archaeological Sites

This poster presents the first results of an attempt to classify archaeological sites by landform analysis of the landscape. To make further use of modelled DEM-derived site catchments, it is possible to classify the relief to be able to compare the sites environment quantitatively. To achieve that goal, we implemented the TPI-based landform classification approach from Weiss (2001) in ArcGIS and applied it to a study area in Andalusia (Spain) to compare the results for various Solutrean sites. The applied...
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LGM sealevel change (HiRes) Spatial

Based on the GEBCO 2014 dataset [1], the area between the 0m coastline of today and the -120m coastline of the Last Glacial Maximum (LGM), is derived and provided in this dataset. To achieve a more realistic and higher resoluting coastline, for producing larger scale maps, the gebco dataset was interpolated from the 30 arc seconds original resolution, to a 0,001 degree resoluting raster. [1] http://www.gebco.net/data_and_products/gridded_bathymetry_data/
Keywords: bathymetrie lgm
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Environmental Conditions during the Last Glacial Cycle in the Northern Harz Foreland

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Inverse modelling of systematic and random uncertainty of luminescence data: Applying Bayesian statistics on luminescence data

Bayesian statistics for higher precision luminescence ages requires separation of uncertainty into random and systematic parts. Here we introduce an inverse modelling approach to estimate a probability density function of the two uncertainty parts, based on published datasets. Each input dataset is tested for their random and systematic uncertainty, which explains reported ages and their number of inversions best. Each set of dates comprises a particular number of age inversions, which are assumed to be the...
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Integrating age information from different localities for stratigraphic marker beds: discussion of the Eltville tephra age (Western Europe)

Stratigraphic marker beds are often used in geosciences for regional and global correlation. For various reasons dating those layers directly proves to be difficult sometimes. In such cases ages from above and below such a horizon represent minimum- and maximum-ages. If these ages are determined from more than one location, it is possible to combine these ages, test their consistency and finally derive an age in agreement with the findings from most localities. Several approaches to integrate the age...
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