Polyphasic hydrothermal and meteoric fluid regimes during the growth of a segmented fault involving crystalline and carbonate rocks (Barcelona Plain,NE Spain)

A polyphasic tectonic‐fluid system of a fault that involves crystalline and carbonate rocks (Hospital fault, Barcelona Plain) has been inferred from regional to thin section scale observations combined with geochemical analyses. Cathodoluminescence, microprobe analyses and stable isotopy in fracture‐related cements record the circulation of successive alternations of hydrothermal and low‐temperature meteoric fluids linked with three main regional tectonic events. The first event corresponds to the Mesozoic extension, which had two rifting stages, and it is characterized by the independent tectonic activity of two fault segments, namely southern and northern Hospital fault segments. During the Late Permian‐Middle Jurassic rifting, these segments controlled the thickness and distribution of the Triassic sediments. Also, dolomitization was produced in an early stage by Triassic seawater at shallow conditions. During increasing burial, formation of fractures and their dolomite‐related cements took place. Fault activity during the Middle Jurassic–Late Cretaceous rifting was localized in the southern segment, and it was characterized by hydrothermal brines, with temperatures over 180°C, which ascended through this fault segment precipitating quartz, chlorite, and calcite. The second event corresponds to the Paleogene compression (Chattian), which produced exhumation, folding and erosion, favouring the percolation of low‐temperature meteoric fluids which produced the calcitization of the dolostones and of the dolomite cements. The third event is linked with the Neogene extension, where three stages have been identified. During the syn‐rift stage, the southern segment of the Hospital fault grew by tip propagation. In the relay zone, hydrothermal brines with temperature around 140°C upflowed. During the late postrift, the Hospital fault acted as a unique segment and deformation occurred at shallow conditions and under a low‐temperature meteoric regime. Finally, and possibly during the Messinian compression, NW‐SE strike‐slip faults offset the Hospital fault to its current configuration.     

宁绍地区早期遗址群的量化分析

宁绍地区早期遗址群的时空变化是钱塘江以南聚落考古研究的重要课题。本文全面收集了这一地区的考古资料,着重从量化分析的角度,对距今7000～3000年间的遗址进行了考古地理学考察。在提取高分辨率年代序列的基础上,绘制出多幅遗址群分布地图,初步恢复性重建了宁绍平原考古时代的聚落群景观。     

Possible evidence of mammoth hunting during the Epigravettian at Yudinovo, Russian Plain

Whether or not mammoth hunting was practised during the Late Palaeolithic has been a controversial issue ever since large accumulations of woolly mammoth bones associated with prehistoric artefacts were discovered more than 100 years ago. Detailed taphonomic and palaeobiological analyses of the mammoth bone complexes from the Epigravettian Yudinovo site in the Russian Plain were carried out. The combination of the homogeneous weathering rate of the mammoth bones, the isolated state of most of the skeletal elements, the restricted spatial range of the carnivore gnawing traces, the breakage pattern of the skulls and long bones, the sex ratio, the small body size of the adult mammoths, the age profile (with an important frequency of prime-aged cows), and the large number of individuals, suggest that the bone complexes at Yudinovo were constructed from body parts and bones that were extracted from freshly killed mammoths and that mammoth hunting was practised at this site during the Epigravettian.     

Reconstructing subsistence at the Yingpanshan and Gaoshan sites in Sichuan province,China: Insights from isotope analysis on bone samples and charred crop remains

During the Neolithic period, the Chengdu Plain was a key region where two important crops, rice and millet, were cultivated together. Millet was probably introduced from north-western China c.3500–3300 cal. bce , and rice came from the Middle Yangtze River c.2600 cal. bce . In this study, human and faunal remains, as well as charred crop grains, were collected from the Yingpanshan (3300–2600 cal. bce ) and Gaoshan (2500–2000 cal. bce ) sites where the dominant crop was millet and rice, respectively. Carbon and nitrogen isotope analyses were conducted on human bones and the ecofact samples in order to reconstruct the subsistence at the sites. The results indicate that the diets of two individuals recovered from the Yingpanshan site consisted of both C₃- and C₄-based foods, predominantly the former. By contrast, Yingpanshan pigs consumed a large quantity of C₄ fodder. This result, combined with the ecofact evidence, suggests that millet was the main crop at the Yingpanshan site. It also highlights the fact that the two Yingpanshan individuals might be non-locals and/or belonged to later periods. On the other hand, the diet of the Gaoshan community was dominated by C₃-based foods. When considering the archaeobotanical evidence at Baodun, a site contemporaneous with and near to the Gaoshan site, it can be stated that rice was an important food resource for the Gaoshan community. This study also suggests how crops were managed at the two sites. The Yingpanshan people might have used manure for growing millet. Both manuring and irrigation might have also been practised by Gaoshan's rice farmers. However, more studies are required to understand the extent of manuring and irrigation in their agricultural economies.     

晋中平原地区农村聚落扩展分析

在实地考察的基础上，章从规模、速度、形态和类型等方面分析了晋中平原地区农村聚落扩展的特点，并深入探讨了影响农村聚落扩展的因素，认为聚落扩展主要是人口增长和家庭规模变化、社会经济发展与收入增加、交通条件改善、农村地区工业化及其他因素共同作用的结果。最后指出了由于聚落扩展而带来的许多难以解决的问题。     

西部大城市居民通勤特征及其与城市空间结构的关系研究——以成都市为例

以成都市为实证研究对象,在大规模问卷调查的基础上,对西部大城市居民通勤基本特征进行了研究。分析发现,西部大城市居民通勤方式以公共交通为主,选择私家车作为通勤工具的比例较高;大部分居民的通勤时间在30分钟以内,通勤距离小于5km。和北京、广州等东部大城市相比,西部大城市职住分离现象还不是非常严重;不同属性居民的通勤时间存在差异,西方空间错位假说反映的城市社会空间不平等现象在中国西部大城市同样存在并逐步显化;通勤空间组织特征与城市结构以及城市功能分区存在密切的关系;西部大城市的快速发展对居民日常通勤影响较大。     

从三峡地区与东部平原的对比看考古学文化中的环境因素

三峡地区与东部平原的不同地理环境,导致了峡区和平原地区的考古学文化的差异。古代人类对不同地理环境适应的结果,是反映在考古学文化中的环境因素。     

成都西郊西窑村唐宋墓葬发掘简报

西窑村14座唐宋砖室墓、墓葬类型多样、器物种类丰富,为研究唐宋时期成都地区的社会面貌提供了新的资料。     

“吃讲茶”:成都茶馆、袍哥与地方政治空间

作为公共空间的茶馆成为袍哥的活动中心,他们在那里联络、聚集和开会,成为袍哥社会网络的一个重要部分。袍哥在茶馆里活动形成了他们独特的语言和行为,"摆茶碗阵"便是他们经常使用的联络方法。茶馆作为地方政治空间可以表现在很多方面,不过,"吃讲茶"仍然是最为典型和最具代表性的活动,这个实践显示了市民的相对自治状态,他们试图在没有官方介入的情况下解决冲突,说明一种国家之外社会力量的存在。     

想象历史的方法——从成都平原商周时期出土的象牙说起

在距今3000年前的三星堆遗址和金沙遗址出土的大量具有鲜明的区域特色和民族特点的青铜器、金器、玉器、陶器等遗物和高耸的城墙、规模宏大的"宫殿式"建筑遗存及反映其严重社会分层的墓葬等遗迹现象,显示其已进入了成熟的文明社会;三星堆"祭祀坑"和金沙遗址"祭祀区"大量象牙、鹿角及獠牙的出土,反映出成都平原商周时期早蜀社会发达的物质文明以及其优越的生态环境,同时也昭显了人类过度性的开发和拓殖是成都平原商周时期温暖湿润的生态环境消失或破坏的一个重要的原因。