Allodynia
发表于 2025-3-26 23:44:54
Lacustrine Paleoenvironments of the Area of Bir Tarfawi-Bir Sahara East Reconstructed from Fossil Os the Eastern Sahara was considerably wetter on a number of occasions during the past two hundred thousand years (Wendorf and Schild 1980; Kowalski . 1989; Szabo . 1989). During these more humid intervals, the water-tables were often very close to the surface and shallow lakes occupied deflational ho
革新
发表于 2025-3-27 01:13:22
Diatoms from the Pool in Section BT-A of Bir Tarfawioratory preparation, K. Szeroczyńska processed 18 samples from the deep-water section of the Pool in Tr. 3/86, following the methods described by Siemińska (1964). The samples yielded very few diatoms, so an additional 22 sediment samples, taken from the near-shore section of the northern profile of
表两个
发表于 2025-3-27 06:24:48
The Middle Paleolithic Archaeofaunas from Bir Tarfawi (Western Desert, Egypt) in 1986 and 1987. The sites and site divisions that yielded bones, even if only scraps, are listed in Table 8.1, which summarizes the general composition of the various archaeozoological assemblages. Detailed information on the sites can be found elsewhere in this volume. The BT-14 (1986) assemblag
轿车
发表于 2025-3-27 10:15:03
http://reply.papertrans.cn/31/3032/303108/303108_34.png
BILIO
发表于 2025-3-27 15:34:46
Remains of Small Vertebrates from Bir Tarfawi and Their Paleoecological Significance come from a peaty soil (Area N) on the northwestern side of the lake of Grey Phase 2 near the archaeological site of BT-14 (Fig. 3.5). The collection is very small, containing about 85 crocodilian teeth and 19 isolated bones or bone fragments of at least eight other amphibian and reptilian taxa. Mo
饶舌的人
发表于 2025-3-27 19:59:05
Uranium-Series Dating of Carbonates from Bir Tarfawi and Bir Sahara Eastlf-lives are comparable to the time-scale of the Pleistocene. If a U-bearing sample is left undisturbed sufficiently long, then each of these isotopes grows into “secular equilibrium” with the parent U isotopes, .U and .U. That is, the activity (measured in disintegrations per minute per gram) of ea
JOG
发表于 2025-3-28 01:01:08
Bir Tarfawi: A Stratigraphic Test of Uranium-Series Dating of Tooth Enamele episodes of lake deposits, contain a stratified, vertebrate fauna which provides an opportunity to test U-series dating of tooth enamel and U uptake. Chronological control is provided by .Th/.U dating on ostrich eggshell and marl, TL dating of sediments and burned rock, optical dating of sediments
Benzodiazepines
发表于 2025-3-28 02:49:19
Thermoluminescence Dates for Burnt Earth Samples from Bir Sahara East and a Burnt Core from Bir Tarfd paleomagnetic techniques to the laboratory in 1973. The preliminary TL results were good but a lack of communication between laboratory and excavator led to the TL measurements being discontinued. In 1987, there was a revival of interest in the project, which has now been completed (Huxtable 1990)
减弱不好
发表于 2025-3-28 08:39:31
Optical Dating of Sediment Samples from Bir Tarfawi and Bir Sahara East: an Initial Reportion of Professor Fred Wendorf. The samples were submitted to RLAHA for age assessment using the recently developed optical or optically-stimulated luminescence (OSL) dating technique. This article documents the results obtained for nine of those samples submitted. Upon completion of further investig
insightful
发表于 2025-3-28 11:47:37
Electron Spin Resonance Dating of Tooth Enamel from Bir Tarfawirges) at points in their lattices, and that these defects are capable of temporarily storing electrons or holes. These stored charges gradually build up in a crystal as a result of bombardment by natural radioactivity. The charge content at any time is therefore a measure of the acquired radiation d