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Found 93 datasets

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Changes in the cyclicity and variability of the eastern African paleoclimate over the last 620 kyrs doi

There is ongoing debate concerning whether or not changes in the eastern African climate, both long-term and short-term, affected the evolution, dispersal, cultural development, and technological innovations of Homo sapiens – and if so, in what way. We present the wavelet spectral analysis results of a ∼620 kyr record of environmental change from the Chew Bahir (CHB) basin in the southern Ethiopian rift, approximately 120 km from the Omo-Kibish fossil locality, which boasts one of the oldest documented...
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Hydroclimate changes in eastern Africa over the past 200,000 years may have influenced early human dispersal SFB806 doi Spatial

Reconstructions of climatic and environmental conditions can contribute to current debates about the factors that influenced early human dispersal within and beyond Africa. Here we analyse a 200,000-year multi-proxy paleoclimate record from Chew Bahir, a tectonic lake basin in the southern Ethiopian rift. Our record reveals two modes of climate change, both associated temporally and regionally with a specific type of human behaviour. The first is a long-term trend towards greater aridity between 200,000 and...
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Supplementary data of Hensel et al. 2021, Frontiers in Earth Science SFB806 doi Spatial

This data corresponds to the article and shall be quoted as such using the provided DOI: Hensel, E., Vogelsang, R., Noack, T., and Bubenzer, O. (2021). Stratigraphy and Chronology of Sodicho Rockshelter – A new sedimentological record of past environmental changes and human settlement phases in Southwestern Ethiopia. Frontiers in Earth Science 8(640). doi: 10.3389/feart.2020.611700.
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Supplementary data of Hensel et al. 2019, E&G Quaternary Sci. J. SFB806 doi Spatial

This data corresponds to the article and shall be quoted as such using the provided DOI: Hensel, E. A., Bödeker, O., Bubenzer, O., and Vogelsang, R.: Combining geomorphological–hydrological analyses and the location of settlement and raw material sites – a case study on un-derstanding prehistoric human settlement activity in the southwestern Ethiopian Highlands, E&GQuaternary Sci. J., 68, 201–213, https://doi.org/10.5194/egqsj-68-201-2019, 2019.
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Hunter-Gatherers of the High-Altitude Afromontane Forest - Holocene Occupation of Mount Dendi, Ethiopia Spatial Temporal

Presentation at SAfA 2018 Conference in Toronto: The Dendi Lake Rock Shelter is situated circa 80 km west of Addis Abeba on the West Central Ethiopian Plateau in the Ginchi woreda of the Oromiya regional state of Ethiopia. In October 2012 a team from the University of Cologne, CRC 806 directed by R. Vogelsang excavated a test-trench that revealed four archaeological horizons that could clearly be distinguished in typological manners as well as by radiocarbon dates. The talk will focus on the lithics,...
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Palaeohydrology and its impact on groundwater in arid environments: Gebel Duwi and its vicinities, Eastern Desert, Egypt doi Spatial

From ancient times, access to water in arid and hyper-arid regions has been crucial for life. Increased knowledge about groundwater conditions is therefore extremely important for the future development of desert areas. Gebel Duwi, a limestone ridge, sited in the today hyper-arid Eastern Desert of Egypt, was chosen for testing current hypotheses concerning the interdependence of palaeohydrologic features and geologic settings for groundwater investigations. Two sub-basins are identified in affecting Gebel...
Keywords: GQT2
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Data compilation of core Co1240

Figure of geochemical, sedimentological, pollen, diatom, and ostracod data of core Co1240 from Lake Yoa/ Chad
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XRF scanning results core Co1240

Elemental composition in 2 mm resolution derived by XRF scanning of the core composite of core Co1240 from Lake Yoa/Chad. age 0-10,227 cal. yr BP depth [m] 0-16.18 Parameters: age [cal yrs BP] depth [m] kcps total counts [counts] MSE maximum square error Al [counts] Si [counts] P [counts] S [counts] Cl [counts] Ar [counts] K [counts] Ca [counts] Ti [counts] V [counts] Mn [counts] Fe [counts] Mn/Fe [counts] Ni [counts] Cu [counts] Zn [counts] Br [counts] Rb ...
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Varve counting vs 14C of core Co1240

Varve counting results and 14C dates of the core composite of core Co1240 from Lake Yoa/Chad. age 0-10,848 cal. yr BP depth [m] 0-16.25 depth [m] n no of counted slide x1 [counts] counts per slide of run 1 x2 [counts] counts per slide of run 2 x3 [counts] counts per slide of run 3 mean [counts] mean of 3 counting runs cumumlated mean [counts] aumulated mean age [cal yrs BP] mean varve age Min (a) [cal yrs BP] min SD Max (a) [cal yrs BP] max SD 14C (a) [cal yrs BP] ...
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Pollen data core Co1240

Pollen data of cores OUNIANGA 03/04 and Co1240 from Lake Yoa/Chad. Parameter: age [years cal BP] according to age-depth model of cor OU03/04 age new [years cal BP] adjusted based on age-depth model of core Co1240 Quercus [%] Pinus [%] Phoenix [%] Chenopodium/Amaranthus type [%] Aerva/Cornulaca type [%] Artemisia [%] Brassicaceae undiff. [%] Acacia [%] Salvadoraceae [%] Capparidaceae [%] Blepharis-type [%] Boerhavia-type [%] Tribulus [%] Balanites [%] ...
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Magnetic susceptibility of core Co1240

Magnetic susceptibility data of the core composite of core Co1240 from Lake Yoa/Chad derived by MSCL scanning. age 0-10,227 cal. yr BP depth [m] 0-16.18 Parameters: age [cal yrs BP] composite depth [m] MS [K] Geotek MSCl with Bartington MS2/MS2E MS/dry [rt] magnetic susceptibility normalized by dry mass MS/dry.CaCO3 [rt] magnetic susceptibility normalized by carbonate content X [m3/kg] mass magnetic susceptibility
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Grain-size data of core Co1240

Grain-size fractions of the core composite of core Co1240 from Lake Yoa/Chad. age 0-10,254 cal. yr BP depth [m] 0-16.185 Parameters: age [cal yrs BP] depth [m] sand [Vol%] >63 µm Micromeritics DigiSizer 5200 mud [Vol%] <63 µm Micromeritics DigiSizer 5200 medium sand [Vol%] 250-500 µm Micromeritics DigiSizer 5200 fine sand [Vol%] 125-250 µm Micromeritics DigiSizer 5200 v fine sand [Vol%] 63-125 µm Micromeritics DigiSizer 5200 v coarse silt [Vol%] 32-63 µm Micromeritics DigiSizer...
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