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Found 153 datasets

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Aragonite and calcite preservation in sediments from Lake Iznik related to bottom lake oxygenation and water column depth doi

This study examines the forcing mechanisms driving long-term carbonate accumulation and preservation in lacustrine sediments in Lake Iznik (north-western Turkey) since the last glacial. Currently, carbonates precipitate during summer from the alkaline water column, and the sediments preserve aragonite and calcite. Based on X-ray diffraction data, carbonate accumulation has changed significantly and striking reversals in the abundance of the two carbonate polymorphs have occurred on a decadal time scale,...
Keywords: GQT2 LRQ6 LRQ7
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Vegetation and climate during the Last Glacial high stand (ca. 28–22 ka BP) of the Sea of Galilee, northern Israel doi Spatial Temporal

Despite ongoing discussions on hydroclimatic conditions in the southern Levant during the Last Glacial, detailed knowledge about the Levantine paleovegetation, which is an important indicator for the paleoclimate, is limited. To investigate the paleovegetation in northern Israel, we analyzed the pollen assemblage of a sediment core that was drilled at the Ohalo II archaeological site on the southwestern shore of the Sea of Galilee (Lake Kinneret). We refined the lithology and the age-depth model with the...
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Relating past occupation patterns to (paleo)environmental properties – hypothesis testing

Current archaeological discussions suggest that early human settlement distribution patterns, as preserved by the geological record, may be related to geospatial properties such as altitude, vicinity to water and habitat variability. However, to date, no quantitative analyses have been undertaken to either verify or falsify these hypotheses. In this study, data-driven methods were applied to test these hypotheses, specifically correlation and comparison of dataset variabilities. We compare the standard...
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Modelling causes of loess-paleosol formation in the Carpathian Basin

The effect of orbital forcing of climate in southeastern Europe can be demonstrated using climate models. Multiple linear regression models (here of the LR04 stack, obliquity and precession; Laskar et al., 2004; Lisiecki and Raymo, 2005) are rather simple models which may be used for the estimation of factors influencing dust deposition resulting in loess formation and pedogenesis in loess. Available data for the last 440 ka from loess is limited to magnetic susceptibility datasets in the area (Basarin et...
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Loess distribution map for the eastern part of the Carpathian Basin: A new approach using different geoscientific maps and data

Geo- and paleo-ecological studies in the Carpathian Basin require a detailed knowledge of the distribution of aeolian sediments. Existing and often cited maps, such as Haase et al. (2007), are in not detailed enough and faulty as a result of the basic input data and due to the used scale. To create a map showing the detailed distribution of loess sediments in the Carpathian Basin at the border of Hungary and Romania several different cross-border spatial data were used. Particularly some problems occurred...
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Tracing the influence of Mediterranean climate on Southeast Europe during the past 350,000 years

Loess-palaeosol sequences (LPS) are valuable archives of past environmental changes in the Eurasian loess belt. Although regional palaeoclimatic trends and conditions in Southeastern Europe (SEE) have been inferred from LPS, large scale forcing mechanisms responsible for their formation have yet to be determined. SEE is a climatically sensitive region, existing under the strong influence of both Mediterranean and continental climates. Establishment of the spatial and temporal evolution and interaction of...
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Towards multi-proxy based millennial time scales in Lower Danubian Late Pleistocene Loess-Palaeosol Sequences: evidence for persistent North Atlantic sea surface temperature control

Late Pleistocene palaeoclimatic records for south-eastern Europe rely largely on loess-palaeosol sequences (LPSS). The general spatial scarcity and often limited temporal range of other sedimentary archives assign the LPSS of the region a key role even in millennial scale temporal reconstructions of the Late Pleistocene terrestrial environmental dynamics. The Eurasian loess-belt has its western end in the Middle Danube (Carpathian) and the Lower Danube Basin. Similar to the Chinese Loess Plateau...
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Luminescence characteristics of quartz grains from the Titel Loess Plateau

The Titel loess plateau in the Vojvodina region of Serbia is considered to contain the most detailed terrestrial paleoclimatic records in Europe, with a thick and apparently continuous record extending through the middle and late Early Pleistocene. In the past few decades the plateau has been investigated on a fairly large scale and has provided important records of climatic and environmental changes during the Pleistocene in this part of Europe. Regardless the extensive research in the past, high detailed...
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Prevailing winds in Northern Serbia: recent data, geomorphological evidences and numerical Simulations

The prevailing winds are explored in Northern Serbia, examining the aeolian processes, especially in the southeastern part of the Carpathian (Pannonian) Basin in the area in and around the Banatska Peščara (Deliblato Sands). In this study, four different methodological approaches were used. The first two approaches are based on the identification of prevailing winds using climatological data on winds and synoptic data on atmospheric circulations from the recent period. Geomorphological records and numerical...
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The Crvenka loess-paleosol sequence (Vojvodina, Northern Serbia)- a record of continuous domination of the Late Pleistocene grasslands

In this study we present a comparison of two independent paleo-environmental evidences: novel n-alkane biomarkers and traditional land snails assemblages, associated with widely used proxy records such as the low field magnetic susceptibility, grain size and various isotopic and geochemical indices. These paleo-environmental proxy records provide evidence for the continued predominance of the different grassland vegetation types during the entire Late Pleistocene. The results presented in this study...
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The Crvenka loess-paleosol sequence (Vojvodina, Northern Serbia)- a record of continuous domination of the Late Pleistocene grasslands Spatial

In this study we present a comparison of two independent paleo-environmental evidences: novel n-alkane biomarkers and traditional land snails assemblages, associated with widely used proxy records such as the low field magnetic susceptibility, grain size and various isotopic and geochemical indices. These paleo-environmental proxy records provide evidence for the continued predominance of the different grassland vegetation types during the entire Late Pleistocene. The results presented in this study...
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Towards multi-proxy based millennial time scales in Late Pleistocene Danubian Loess-Palaeosol Sequences. Spatial

Late Pleistocene palaeoclimatic records for south-eastern Europe rely largely on loesspalaeosol equences (LPSS). The general spatial scarcity and often limited temporal range of other sedimentary archives assign the LPSS of the region a key role even in millennial scale temporal reconstructions of the Late Pleistocene terrestrial environmental dynamics. In Eurasia, aeolian dust sediments (loess) are widespread in continental mid-latitudes. The Eurasian loess-belt has its western end in the Middle Danube...
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