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Anne I. Thackeray 《Journal of World Prehistory》1992,6(4):385-440
Current interest in the origins of anatomically modernHomo sapiens has focused attention on early modern human remains and related archaeological materials associated with the southern African Middle Stone Age. While the anatomically modern status and a Last Interglacial or later age for the human fossils enjoy general support, issues related to the definition of the Middle Stone Age, its dating, and the interpretation of human behavior lack consensus. Available evidence suggests that the anatomically modern human skeleton appeared well before many aspects of the subsistence and symbolic behavior that characterize recent foragers and that Middle Stone Age technology persisted longer in southern Africa than its northern hemisphere counterpart. 相似文献
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Lyn Wadley 《Journal of World Prehistory》1993,7(3):243-296
The earliest Later Stone Age (LSA) industries from southern Africa are microlithic and unstandardized and include the bipolar technique. The dating of these industries is controversial and the earliest microlithic industry is said to occur at Border Cave at about 39,000 B.P. By 18,000 B.P. a bladelet tradition was established and this was replaced in many parts of southern Africa, at about 12,000 B.P., by a widespread and prolific nonmicrolithic industry, characterized by side-struck flakes. The late Pleistocene environment was colder than present, with particularly harsh conditions during the Last Glacial Maximum (LGM), between about 20,000 and 18,000 B.P. Populations may have been isolated because archaeological visibility is low during the LGM and decreases further after the LGM. After 13,000 B.P. there is a dramatic increase in sites and this implies that there may have been widespread colonization of territory previously unoccupied for tens of thousands of years. By the end of the late Pleistocene there was a change in hunting patterns, in parts of southern Africa, from an emphasis on the capture of large, gregarious grazers to an emphasis on small, solitary browsers. Social complexity increased during the late Pleistocene, and by 12,000 B.P. it seems possible that Stone Age people were observing some social practices recorded historically among Bushmen (San). 相似文献
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清晨我站在青青的牧场,看到神鹰披着那霞光,像一片祥云飞过蓝天,为藏家儿女带来吉祥;黄昏我站在高高的山岗,盼那铁路修到我家乡,一条条巨龙翻山越岭,为雪域高原送来安康……每当听到这首美丽动人的歌谣,我们就无不向往那茫茫雪域、青青草原、蓝天白云,还有那奔放的歌舞、牧人、 相似文献
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Channel roughness in desert streams is generated by the colonisation of beds and banks by trees including the river red gum, Eucalyptus carnaldulensis. Often growing densely over the bed surface, these trees contribute channel roughness which is distributed through the flow; the effects are heightened by substantial barriers of flood-transported debris which lodge against trunks and branches, offering additional obstruction to water movement. Bed scour often occurs around such obstacles. Field mapping of channels in the Barrier Range, western NSW, where E. camaldulensis growth is common, has permitted the quantification of channel roughness. Results suggest that just under half of the total channel roughness may be contributed by in-channel vegetation, the remainder coming from boundary friction effects. Site-to-site variations in vegetation density are great and assessment of flood discharges and sediment fluxes in these streams without due incorporation of a roughness correction could result in substantial errors of overprediction. 相似文献
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欧洲各国风景如画的小镇众多,位于欧洲中部的内陆国家奥地利也不例外,在奥地利大大小小的小镇中,有一座最为世人喜爱的小镇,名叫哈尔施塔特。小镇坐落在阿尔卑斯山中,位于高山湖泊哈尔施塔特湖畔,背依绿意盎然的巍巍青山,面朝宛如翡翠的湛湛湖水,旖旎的自然风光,让这座远离喧嚣,仅有不到2000人口的小镇以一种静谧怡人的风韵惊艳全球。 相似文献
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在青海省的东部,地处甘肃、青海交界地带的青海省民和回族土族自治县南部有一块富庶土地,这里地势开阔,气候湿润,光热充足,土地肥沃,绿树成荫,黄河自西向东,绕南而过,是一个典型的盆地地貌,是土族群众的主要聚居地。 相似文献
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上古中国西部族群多源于氐羌,其酋豪曰"大",死则火葬,灵魂"登遐"升至山上(祖山)谓之"天"。甲金文"天"字即"大"上加一横或圆圈,表示在上、上面、神灵之意,是以又有"天在山中"之说。文献如《墨子》《荀子》《吕氏春秋》等记载西方羌戎之人对于被俘本身并不特别担忧,最为担心的是死后灵魂能否"登遐"升天,即回归祖山圣地,此即西部族群的"敬天"传统。上古人认为族与族之战也是神与神之争,因此东方殷人、夷人西征夏、周要"射天"、射山、搏木偶"天神"。这个习俗远可追溯到尧时的羿"射日(天)",晚则战国宋王偃还在"射天笞地",都是对于西部族群神灵之"天"的厌胜之术,所谓"威服天下鬼神"。汉民族融合早期主要是西部诸夏族群与东部商夷族群之间交合的历史,长期交往中伴随着征战与杀伐,最后形成血的凝聚。新石器时代以来考古学文化区系的逐渐明晰,让我们进一步看清了这一点。 相似文献