Tectonic structures in the Peel Sandstones and Carboniferous limestone,Isle of Man

On the Isle of Man, the Early Devonian Peel Sandstones and Early Carboniferous limestones have been deformed in places by folds, cleavage and other structures. The structures in the Peel Sandstones have been attributed to pre‐lithification deformation associated with slumping of the red beds. Here, they are re‐interpreted to be products of post‐lithification deformation, inferred from small‐scale structures and fabrics, which took place in a localized thrust zone. Compression was approximately NW–SE and translation towards the SE. That deformation may have also produced some of the late structures in the Lower Palaeozoic rocks of the island. The minimum age of these post‐Early Devonian structures is unknown but is probably pre‐Carboniferous: they may represent the mid‐Devonian Acadian deformation. The Carboniferous succession is folded in places and contains stylolites and stylolitic cleavage. A stress regime with E–W to WNW–ESE compression is inferred. These structures have orientations and morphologies shown to resemble those in neighbouring parts of southern Britain, where they are attributed mainly to mid‐ to late‐Carboniferous Variscan events. Alternatively, some or all of them might be products of late Mesozoic and Tertiary tectonics recognized elsewhere in the region. Copyright © 2010 John Wiley & Sons, Ltd.     

南京直立人生存的年代及气候地层对比

1 朱梅.葡萄酒.北京:轻工业出版社,1954 2 尹克林,梁武,诸葛宏庆.酿酒葡萄品种“蛇龙珠”的叶形结构数值鉴别.园艺学报,1998,25(2     

五大连池火山1720-1721年喷发观测记录

存于黑龙江将军衙门档案中的五大连池火山喷发满文史料 (由吴雪娟发现并译成汉文 ) ,详细记载了五大连池火山在 172 0年 1月 14日至 172 1年 3月 18日喷发形成老黑山、172 1年 4月 2 6日至 172 1年 5月 2 8日喷发形成火烧山的全部过程 ,记述了这 2座火山的喷发时间、地点、喷发状态和火山堰塞湖形成以及参加观测的人员情况等各种史实。这是中国历史上迄今为止对火山喷发仅有的一次有组织的观测活动 ,这些记录为火山观测研究提供了珍贵的第一手资料。同时 ,也表明中国是世界上火山观测开展较早的国家之一。以往认为五大连池老黑山、火烧山火山喷发的时间为公元1719— 172 1年 ,实际应为公元 172 0— 172 1年     

自动站与人工观测气温的对比分析

根据2000年自动站和人工观测气温资料, 对两种气温序列进行了对比分析, 以了解仪器改变对观测数据产生的影响以及为换型后数据的连续使用提供科学依据。结果表明:除个别地区以外, 自动站与人工观测气温偏差都在允许范围之内或略超出允许范围, 季节性和地域性差异不大; 由于自动站温度传感器灵敏度高, 所以在日出日落、日气温最高和最低时与人工观测偏差较大; 自动站观测气温与历史序列无显著性差异。自动站可以用于业务, 但需进行一定时间的平行观测, 尤其在西北及高山站更为必要。     

国家资源环境安全的要素综合评价

资源环境安全问题始终是世界各国持续发展的核心任务和基本诉求。考虑到单要素和整体两大分析方法的不足，提出一种针对性很强的要素综合分析方法。根据世界上10个人口超过 1亿以上国家的抽样分析表明，土地、水资源、矿产及生态环境的整体状态是决定国家资源环境安全的基本所在。与此同时，为了改善国家，特别是发展中国家的 资源环境脆弱状态和提高其稳定程度，第一是要严格控制人口增长；第二是努力推进本国资源环境开发的国际化进程；第三是增大智力投入以提高资源深度化加工；第四是加大本国生态环境保护力度。     

沈阳地区气象条件对人体健康影响的研究及预报

应用丰富的常规气象观测数据、非常规气象观测数据和医疗数据建立了沈阳地区适用的气象与健康服务业务系统，包括气象条件对疾病的影响和气象条件对人的生活影响；采用多种统计理论建立了各种指数指标的预测模型；针对沈阳地区的气候特点和人的适应性，重新界定了各种指数指标的分级。     

Origin,characteristics and distribution of fault‐related and fracture‐related dolomitization: Insights from Mississippian carbonates,Isle of Man

Viséan limestones on the Isle of Man host numerous examples of fault‐controlled and fracture‐controlled dolomitization, which have been investigated to determine their macro‐scale to micro‐scale characteristics, geofluid origin, timing and relation to basin evolution. Geobodies composed of fabric destructive, ferroan, non‐planar dolomite range from several centimetres to >300 m wide and tens to hundreds of metres long parallel to faults and/or fractures; they have sharply defined margins, cross‐cut stratigraphy and locally finger out along beds or bed boundaries for tens of metres. Larger geobodies accompany NNE–SSW extensional faults with substantial breccia zones. One of these bodies hosts a sphalerite‐rich breccia deposit cemented by dolomite. Saddle dolomite lines or fills vugs and fractures within dolomite geobodies, and is a minor late diagenetic phase in undolomitized limestones. Replacive dolomite has low matrix porosity owing to non‐planar texture and associated cementation, and there is no evidence for subsequent leaching. Three dolomite stages are discriminated by texture, cathodoluminescence petrography and electron microscopy. Disseminated ‘Dolomite 1’ is substantially replaced and may be residual early diagenetic dolomite. Pervasive ‘Dolomite 2’ and ‘Dolomite 3’ have overlapping carbon–oxygen–strontium isotopic and fluid‐inclusion characteristics that indicate precipitation from allochthonous, high‐temperature (98 to 223°C) and high‐salinity (15 to 24 wt% NaCl eq.) brines. These variably equilibrated with host limestones and mixed with resident pore fluids. Overlying mudrocks formed a seal for ascending fluids. Integration of data from the mineral deposit suggests that fault‐fracture systems tapped different deep‐seated fluid reservoirs at different temperatures, and implies fluid interactions with both metamorphic basement and sedimentary cover in large‐scale circulation systems. This phenomenon probably took place during Mesozoic rifting, although an earlier event at the end of the Early Carboniferous cannot be discounted. In either case, a transient heat flow anomaly, previously unrecognized in the Irish Sea region, may be required to account for the hottest fluids.     

The Paradoxical Black Rock City: All Cities Are Mad

Since 1986, Burning Man has evolved from an obscure bohemian San Francisco solstice celebration into the world's largest intentional community, anchored by annual burns on a playa in Nevada's Black Rock country. Participants embrace an ethos that radically challenges mainstream culture through Black Rock City's yearly (re)formation, negotiation, immolation, and deconstruction. Voicing curiosity, as humanists, in who we are, what we do, and why we do it, we examine rituals associated with this transitory yet international‐scale event. Such happenings imply a human need to seek clarity, dwell in close confines, and engage with a utopian desire for concerted communal participation. Yet, there exist historical‐cultural paradoxes associated with Burning Man, including steep entry barriers that reinforce an elite homogeneous population no longer representative of Burning Man's distinctive California roots.     

“数字城市”建设的核心问题

城市是一种人地关系系统。“数字城市”是城市的信息系统或数字神经系统 ,它必须反映现实城市的人地关系。数字城市是现实城市人地关系在信息空间的影射。数字城市的主体是人 ,由政府、企业和市民构成 ,因此 ,城市信息系统由政府信息系统、企业信息系统、公众服务信息系统构成 ,政府信息系统是“数字城市”的核心。