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Valentina Anechitei-Deacu Alida Timar-Gabor Kathryn E. Fitzsimmons Daniel Veres Ulrich Hambach 《Geochronometria》2014,41(1):1-14
In this study we present luminescence investigations of four samples of loess bracketing the Campanian Ignimbrite/Y5 tephra at the Rasova-Valea cu Pietre site, on the eastern bank of the Danube River, southeastern Romania. Investigations involved SAR-OSL dating on aliquots of fine (4–11 μm) and medium-grained (63–90 μm) quartz, as well as single grain analyses on 125–180 μm quartz. Luminescence dating results coupled with glass-shard chemical fingerprinting assign the depositional age and origin of the ash layer to that of the Campanian Ignimbrite/Y5 tephra, dated elsewhere using 40Ar/39Ar to 39.28 ± 0.11 ka. Fine-grained (4–11 μm) quartz SAR-OSL analyses yielded ages of 44.4 ± 4.5 ka below the ash, and 41.4 ± 4.2 ka above the ash layer. Single grain analysis on coarse-grained quartz, however, demonstrates that coarse material from these samples exhibits low sensitivity and responds poorly to internal checks of the SAR protocol in comparison with the finer sediment. This observation highlights the need for more extensive investigations into the luminescence properties of quartz as well as into the origin of quartz contributions from different primary sources in the Lower Danube loess steppe. 相似文献
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Christoph Schmidt Valéry Sitlivy Mircea Anghelinu Victor Chabai Holger Kels Thorsten Uthmeier Thomas Hauck Ion Băltean Alexandra Hilgers Jürgen Richter Ulrich Radtke 《Journal of archaeological science》2013
Currently, absolute dates for the emergence of the Early Upper Paleolithic and the timing of the earliest dispersal of anatomically modern humans (AMH) into Europe are sparse. This is especially true for regions adjoining the Eastern Mediterranean and Central Europe with its dense clusters of sites along the Austrian and German Danube Valley. This article makes a first step toward filling this gap and, for the first time, presents absolute ages for the open-air site of Române?ti-Dumbr?vi?a I (Banat, SW Romania) located close to the Oase Cave where some of the oldest AMH fossils were found. A set of heated artefacts recently excavated from the Aurignacian layer GH3 was dated by thermoluminescence (TL) and gives early chronometric dates for this technocomplex in Romania. 相似文献
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E. Ulrich Kratz 《Indonesia and the Malay World》2006,34(100):247-280
The article introduces six Malay letters from 1784 and 1785 which were sent by Ence' Lena of Bengkulu to John Marsden, the elder brother of William Marsden. The letters express in moving words the personal loss and dislocation of a local woman, whose spouse of many years has left her to return to Europe, taking with him two of their three children. The documents are important for several reasons: they give a personal voice to a late 18th-century Muslim female individual from West Sumatra; they contribute to our knowledge of the Malay epistolary in general and provide a historical context to the nature and uses of the Malay language in particular; they throw light on an aspect of British and Asian relations for which we lack contemporary accounts in European languages; they bring the day-to-day life of British settlements around the Bay of Bengal in the late 18th century into focus; and, last but not least, they raise challenging questions about the lives of John and William Marsden. 相似文献
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