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Z. Jacobs M.C. Meyer R.G. Roberts V. Aldeias H. Dibble M.A. El Hajraoui 《Journal of archaeological science》2011,38(12):3631-3643
Optically stimulated luminescence (OSL) measurements of individual quartz grains are reported for Middle Paleolithic (MP) or Middle Stone Age (MSA) deposits in La Grotte des Contrebandiers, Morocco. Single-grain measurements enable rejection of grains that may lead to under- or over-estimation of age due to malign luminescence properties or remobilisation of grains after burial. We identified the former using a range of experimental procedures and objective rejection criteria. Three post-depositional factors influenced the distribution pattern of equivalent dose (De) values for the remaining single grains: the disintegration of roof spall liberating unbleached, older grains into otherwise well-bleached sediments; the intrusion of a small number of younger grains from the overlying Upper Paleolithic deposits; and small-scale differences in the beta dose received by individual grains. Roof spall contamination was a significant problem, so we characterised the OSL signals and obtained De values for the calcareous sandstone in which the cave is formed, which allowed bedrock-derived grains in the MP/MSA deposits to be identified and rejected prior to age determination. We collected 31 samples from the MP/MSA deposits, and were able to calculate ages for 30 of them. These ages suggest that MP/MSA occupation of Contrebandiers was restricted to the interval between about 120 and 90 ka ago (Marine Isotope Stages 5d to 5b). Weighted mean OSL ages were obtained for samples associated with archaeologically sterile deposits at the base of the excavations (126 ± 9 ka), followed by two phases of the Moroccan Mousterian (122 ± 5 and 115 ± 3 ka), interspersed with archaeologically sterile deposits (112 ± 4 ka). The base and top of the Aterian were dated to 107 ± 4 and 96 ± 4 ka, respectively. Based on the grand weighted mean ages of 116 ± 3 and 103 ± 3 ka for the Moroccan Mousterian and Aterian at Contrebandiers, we suggest that these two industries may be separated by an occupation hiatus of up to 13 ± 3 ka at this site. Our single-grain OSL chronology confirms previous age estimates obtained for Contrebandiers and other sites in the vicinity, but are generally more precise and stratigraphically more coherent, due to the inherent advantages of measuring individual quartz grains and rejecting contaminant and other unsuitable grains before age determination. 相似文献
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Spinal pathological findings in ancient Egyptians of the Greco‐Roman period living in Bahriyah Oasis
F. H. Hussien A. M. Sarry El‐Din W. A. El Samie Kandeel R. A. E‐S. El Banna 《International Journal of Osteoarchaeology》2009,19(5):613-627
The spine can provide a large amount of information about an individual's physical condition and possible lifestyle through palaeopathological investigations. The aim of this research was to study spinal diseases among Greco‐Roman ancient Egyptians from Bahriyah Oasis, and to compare them with those from Giza of the Old Kingdom. The material used in the study included 809 single vertebrae and 77 adult sacra of ancient Egyptians from the Greco‐Roman period (332–30 BC) that were excavated from Bahriyah Oasis. The spinal elements were examined for pathological conditions, degenerative diseases, trauma, congenital abnormalities, infectious diseases and neoplasms. The most common lesions of the spine were those due to degenerative processes. The articular facets were more affected than the vertebral bodies. Compression fractures of the bodies, mostly due to osteoporosis, were found in 1.44% and 5.07% of thoracic and lumbar vertebrae respectively. The percentage of spina bifida occulta among ancient Egyptians from Bahriyah Oasis was 62.33%, while among those from Giza was only 3.33%. Few cases of lumbar spondylolysis and one case of DISH were recorded. No cases of infectious or neoplastic diseases were found. Copyright © 2008 John Wiley & Sons, Ltd. 相似文献
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On 25 January 2011, Egyptians took to the streets demanding political and social reform. In Cairo, protesters converged upon Tahrir (‘Liberation’) Square, which remained constantly occupied until the resignation of President Hosni Mubarak on 11 February. In this narrative, the author recounts his experiences over 12 days as a participant in what is now referred to as the Egyptian revolution. He concludes with reflections on the situation that emerged in the square, focusing in particular on some of the factors that may have contributed to the success of its continued occupation: the swift creation of an embryonic form of community, and the receding of the usual identities based on class and religion in favour of a simple yet powerful identity as people of the revolution. 相似文献
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Kasia Narkowicz Elżbieta Korolczuk 《Gender, place and culture : a journal of feminist geography》2019,26(7-9):1215-1222
AbstractFeminist geography in Poland does not exist as a sub-discipline of geography. While there are individual Polish geographers pushing for feminist perspectives, most feminist analyses of issues relating to place, space and politics of location can be found within gender studies or feminist sociology. In this sense, feminist geography in Poland cannot compare to Anglophone feminist geography and attempts to incorporate it within such an established field risks being reductive. Instead, in this report, we shift the focus to the scholarship and activism that does exist in Poland, outside of geography. This contribution focuses on shedding light on geographical questions such as the body, the city and gendered geopolitics that have been recurring themes in gender studies, feminist sociology and feminist activism in Poland. We conclude by pointing to the need to mobilise broadly, and internationally, between disciplines with the intention of de-centering dominant knowledges. For feminist scholarship this is particularly important in the context of recent political successes of right-wing forces. 相似文献
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S. El‐Zaatari 《International Journal of Osteoarchaeology》2010,20(1):67-87
With the exception of few studies, occlusal microwear of pre‐agricultural modern humans has not been documented. In this study, microwear fabrics of samples from seven historic/prehistoric hunter‐gatherer populations with known and diverse dietary habits, representing mostly meat‐eaters from different environments, arctic/tundra (Tigara from Point Hope), cold‐steppe (Fuegians) and Mediterranean (Chumash), and mixed‐diet hunter‐gatherers from tropical climates (Andamanese and Khoe‐San from Matjes River, Riet River, and Oakhurst Shelter), were analysed to better understand how dietary differences affect microwear in these groups and to establish a reasonable comparative database for interpreting fossil hominins microwear. Significant microwear differences, related to diet and food preparation techniques, between the meat‐eaters and mixed‐diet hunter‐gatherers were detected. Finer scale differences within each of these dietary categories were also observed. Ethnographic accounts indicate that the Tigara and Andamanese ingested hard particles attached to their food as a result of their food preparation techniques; their microwear fabrics also reflect highly abrasive diets. On the other hand, as expected, the microwear signatures of the Chumash and Fuegians indicate a diet low in abrasives, reflecting their almost exclusive reliance on marine meat for subsistence and the low amounts of extraneous particles attached to this meat. The mixed‐diet Khoe‐San occupy an intermediate position between the Tigara and Andamanese on the one hand, and the Chumash and Fuegians on the other, with regard to the level of abrasives ingested. The Khoe‐San ate large amounts of hard plants, most likely responsible for abrading their enamel surface. Copyright © 2008 John Wiley & Sons, Ltd. 相似文献
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