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Found 511 datasets

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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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The Central European Magdalenian – Regional diversity and internal variability Spatial

The general objective of this thesis has been to better understand the regional diversity of Central European Magdalenian (CEM) hunter-gatherer groups and thereby to gain a more profound comprehension of Late Upper Palaeolithic interaction networks and of the spatio-temporal processes during the recolonisation of Central Europe after the Last Glacial Maximum. In addition, this study aimed at a comprehensive overview of the current state of knowledge about the CEM and the provision of a detailed compilation...
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Paleolimnology of Lake Iznik (NW Turkey) during the past ~ 31 ka cal BP Spatial

Lake Iznik, situated in the Marmara region (NW Turkey), is an alkaline lake with about 300 km2 surface area, inserted in an area of typical Mediterranean climate. During the dry summer season, carbonates are precipitating from the water column. The endogen carbonate accumulation, e.g. aragonite, is expected to hold past climate information. A detailed understanding of the limnological system is required to differentiate site specific signals and responses to climatic forcing. Geochemical and mineralogical...
Keywords: GQT2 GQT3 LRQ13 LRQ6 LRQ7 LRQ9
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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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Culture Change and Continuity in the Eastern Mediterranean during Rapid Climate Change: Assessing the Vulnerability of Neolithic Communities to a Little Ice Age in the Seventh Millennium calBC

In the past several years there has been increasing interest in a short interval of abrupt climate change known to have occurred towards the end of the 7th millennium calBC, most often referred to as the 8.2 ka calBP event. Growing numbers of studies have discussed the role of this interval in coincident Neolithic culture change in the region of the Eastern Mediterranean, albeit lacking a true comprehension of 1) the superordinate climate mechanism, and 2) further-reaching implications, e.g. the early...
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Demographie der Jäger und Sammler im späten Jungpaläolithikum Spatial Temporal

This PhD-thesis investigated the demography of Late Upper Palaeolithic hunter-gatherer populations, when Europe was repopulated after the Last Glacial Maximum. The study deals with estimations of regional differentiated population densities and associated settlement patterns. A method based on GIS techniques is used to upscale archaeological data from key sites and regions to culturally homogenous contextual areas in Europe. Based on the spatial density of Late Upper Palaeolithic sites, GIS-calculated...
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