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Found 36 datasets

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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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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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Towards modelling of loess-paleosol sequence formation.

A simple modelling approach of loess-paleosol sequences combining both local insolation (as represented by a combination of precession and obliquity; p-0.5t) and a global climate signal (represented by the LR04 benthic oxygen isotope stack) is presented. Aim is the combination of these signals and the setting of threshold values to mimic loess-paleosol formation in the Pannonian Basin. As a good fit dies not necessarily imply a causal link, results require critical discussion.
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Environmental change indicated by a site-specific grain size ratio - the example of the Semlac loess-paleosol sequence (Romania)

Loess sequences provide important and at least a partial continuous record of Quaternary palaeoenvironmental change. In addition, loess-palaeosol sequences provide valuable information concerning environmental change and climate evolution. It is customary to reconstruct such changes by means of grain sizes ratios. In this study, we calculated an site-specific grain size (GS) ratio (Schulte et al. in review) and compare this ratio with the common U-ratio (Vandenberghe et al.1985) and, in addition, with...
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Climatological and environmental change as derived from physical and geochemical loess sediment properties: Examples of last glacial loess sites from the Pannonian Basin doi

The Project B1 within the CRC 806 “Our way to Europe” is focused on the "Eastern Trajectory" of modern human migration from Africa into Europe. The Middle East, Anatolia, Balkans and Southeastern Europe constitute the principal areas to be investigated. Within these larger regions key areas were selected for combined archaeological and geoarchaeological research, fieldwork having delivered case studies for initial Modern Human adaptational systems, yet to be fully...
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Environmental Conditions on the corridor of human migration between 40,000 and 14,000 a BP in Balkan region. A multi-proxy approach on loess-paleosol profiles doi

This contribution focuses on two PhD projects, which are integrated within the collaborative research centre 806 “Our way to Europe” at the University of Cologne and the RWTH Aachen University (Germany). The main research focus is the migration of anatomical modern human (AMH) to Europe. We concentrate on the paleoenvironmental conditions on the route through southeastern Europe. This links the region with the earliest fossils of Homo sapiens sapiens (so far known) in the Middle East, Anatolia, the...
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Investigation of the Azraq Basin, Jordan using Integrated Geoelectrical Techniques: 2D Modeling of Transient Electromagnetic Data

The Eastern Mediterranean has been the passageway for human migration from Africa to the Middle East, the Balkans and Europe. The Azraq basin in the eastern desert of Jordan has been a major spot for human settlements since the middle Pleistocene. The former lake in the basin center has developed to a 10 km × 10 km large hyper-saline alluvial mudflat, the Qa’ Al Azraq. In the basin center thick sequences of alluvial sediments, consisting mostly of clay and various evaporates, are deposited. We utilized the...
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Mapping the distribution of weathered Pleistocene wadi deposits in Southern Jordan using ASTER, SPOT-5 data and laboratory spectroscopic analysis doi Spatial

In the arid regions of the Levant, ancient wadi fills act as a terrestrial sedimentary archive with a high potential for preserving archaeological findings. This current study combines remote sensing with laboratory VIS-spectroscopy to investigate the spatial distribution of alluvial wadi fills in a small catchment in Southern Jordan. Due to its homogeneous sandstone geology, the composition of the alluvial sediments is highly influenced by the local bedrock whilst fluvial relocation and surface weathering...
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Genesis of loess-like sediments and soils at the foothills of the Banat Mountains, Romania - Examples from the Paleolithic sites Romanesti and Cosava doi Spatial

The Paleolithic sites Romanesti and Cosava, situated at the foothills of the Banat Mountains in Romania, provide an important testament of life of the first European modern humans (Homo sapiens sapiens) during the Middle Pleniglacial. Even though these sites have been extensively excavated, little is known about the site formation of related loess-like sediments and soils. First luminescence data at the two investigated sections confirm sediments from the penultimate glacial period to the Holocene. ...
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The Late Pleistocene Belotinac section (southern Serbia) at the southern limit of the European loess belt: Environmental and climate reconstruction using grain size and stable C and N isotopes doi Spatial

The Belontinac loess section is one of the southernmost loess-paleosol environmental archives for the Late Quaternary in Serbia. The climate at this site is intermediate between the continental and the Mediterranean realms, which makes this loess archive potentially highly sensitive to past climatic changes. This paper presents new insights into the paleoenvironmental history during the last glacial period in southern Serbia using grain size and isotope proxy data. The grain size parameters from the...
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Looking around Peştera Cu Oase: The beginnings of Upper Paleolithic in Romania Spatial

In contrast to the widely acknowledged anthropological finds in Oase Cave and to the key geographical position of Romanian territory for the assumed dispersion of Anatomically Modern Humans in Europe, the archaeological information regarding the emergence of the Upper Paleolithic in Romania remains poorly known to a broader scientific community. The prolonged theoretical and methodological isolation of the Romanian Paleolithic research has particularly contributed to keeping the regional archaeology out...
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Luminescence dating Project B1 Romania Ukraine Spatial

Luminescence ages and additional information about palaeodose estimation and dosimetry. Optically stimulated luminescence dating was carried out on 31 quartz samples and 7 feldspar samples. Thermoluminescence dating of heated silex was applied to 11 samples using various measurement protocols (SAR, MAAD, SARA). Preliminary TL ages were published in Sitlivy et al. 2012, Quartar 59, 85-130. Further results are given in Schmidt et al. Journal of Archaeological Sciences (in review).
Keywords: luminescence osl silex
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