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Found 121 datasets

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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...
Keywords: GQT2
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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...
Keywords: GQT1 LRQ1
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Optical dating of sediments in Wadi Sabra (SW Jordan) doi

At Wadi Sabra (SW Jordan) human occupation dates back to the Palaeolithic and Epipalaeolithic. Although there is stratigraphic correlation based on archaeological finds of Ahmarian origin, numerical age estimates are lacking. We applied single-aliquot optical dating of coarse grained quartz of wadi deposits and investigated the luminescence properties in detail to achieve more accurate age information about the time of human occupation. Weak luminescence signals and scattered dose distributions characterise...
Keywords: GQT1 LRQ1
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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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When Holocene soil formation starts on the loess plateaus of the Vojvodina region in Northern Serbia?

In this study we evaluated simplified direct comparisons between Pleistocene regional and local terrestrial environmental archives and global deep sea and ice core records. Our recent results of the luminescence dating applied to the Serbian loess-paleosol sequences lead to an important question about the validity of previously generalized direct stratigraphic correlations, as well as to underline importance of understanding environmental thresholds which controlling discordances between these...
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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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Towards mineral magnetic based millennial time scales in Late Pleistocene Danubian Loess-Palaeosol Sequences

The understanding of the climate system of the Earth’s, its present day state, and the prediction of its future states requires the detailed knowledge of its history. Sedimentary archives are the bases of almost any historical approach to the Earth’s climate system – the palaeoclimate research. Aeolian dust sediments (loess) are beside marine/lacustrine sediments, peat bogs and arctic ice cores the key archives especially for the reconstruction of the palaeoclimate in the Eurasian continental mid-latitudes....
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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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Multiple environmental change at the time of the Modern Human passage through the Middle East – First results from geoarchaeological investigations on Upper Pleistocene sediments in the Wadi Sabra (Jordan) doi Temporal

Upper Pleistocene sediments at Wadi Sabra (Ma’an District, Jordan) were geoarcheologically investigated from 2008–2010. The Wadi Sabra valley system, situated east of the Dead Sea Rift and south of the ancient Nabataean capital of Petra, has preserved sedimentary deposits which are connected with several Upper Paleolithic sites. First results from sedimentological and geochemical analysis supported by archeological and radiometric dating provide evidence of fluvial and fluvio-eolian sedimentation during...
Keywords: GQT3 LRQ13
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Late Quaternary landscape evolution in the Wadi Sabra (Jordan) based on sedimentological and geochemical investigations Spatial

This Ph.D.-thesis focuses on the Levant as a potential main corridor of human dispersal from Africa to Europe during the Upper Pleistocene. For the related palaeoenvironmental research in the Eastern Mediterranean region, significant and reliable climate proxies as well as Palaeolithic in-situ sites are scarce. Consequently, the investigation of environmental interactions and migration pathways of ancient human cultures requires advances in the prospection of archaeological sites and associated...
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