中国东部四个水库震例的诱震环境因素研究

本文通过对我国东部四个诱震水库的地质调查及其资料分析,探讨了水库地震诱发过程中所涉及的诸环境因素。研究表明:水库地震的诱发因素很多,但大体上可归纳成库水渗透条件和发震构造条件两类;这些环境因素只有在它们按一定方式恰当地组合成一个统一体存在于同一库区(段),水库地震才有可能诱发产生。因此,预测水库地震一个很重要的工作就是要查明库区诱发地震的环境因素及其总体组合条件。     

第四纪冰期成因的讨论

根据近年来大量资料和信息及野外实地考察,笔者对第四纪冰期成因进行了讨论,文中引述大量资料表明:米兰柯维奇为冰期形成理论找到了确切的地质证据,天文因素与地壳变动及反馈作用的叠加是目前对第四纪冰期形成原因的最圆满的解释;并对大陆冰流次数与深海沉积所反应的冰期旋回的关系进行了探讨。     

大义山西北端硼矿床特征及其控矿因素

湖南大义山西北端的硼矿属接触交代—热液叠加型。矿体赋存于大义山花岗岩体中上石炭统壶天群白云岩接触带中,呈层状、似层状,局部为透镜状,分枝复合明显。矿石组分复杂,结构构造多样。富镁的碳酸盐岩是有利的成矿围岩;富含硼、氟的大义山花岗岩体是成矿母岩;广泛发育的节理裂隙是容矿构造。外围尚有一定的找矿远景。     

主题公园周边土地利用动态变化及其驱动机制——以常州中华恐龙园为例

以常州中华恐龙园为研究对象,选取该处土地利用重要变化节点2000—2010年为研究时段,利用GIS/RS手段,从土地利用变化速度、土地利用扩展强度和土地利用转移方向等方面对中华恐龙园周边土地利用变化时空特征进行定量分析。结果显示:2000—2010年中华恐龙园周边10 km缓冲区内各种土地利用类型均有较大变化,随着缓冲区范围的扩大,其建设用地变化速率变缓,相比而言,2005—2010年间的变化强度和规模比2000—2005年间大。研究区内建设用地变化与中华恐龙园的发展水平呈显著相关。依托区域形象、人文环境、人口集聚等保障因素,在政府金融、财税、土地等政策的引导下和各项经济因素的推动下,主题公园周边的土地实现了功能转变、价值提升且土地利用方式朝着集约化的方向发展。     

泰山玉的致色因素分析

颜色是珠宝玉石宝石学特征研究的重要一项,是影响宝玉石价值的重要因素。泰山玉有4个颜色系列,对各系列泰山玉致色因素的分析研究具有重大意义。通过化学分析和电子探针测试,查明了泰山玉的主要化学成分,对比分析了化学成分与颜色的关系,最终确定了不同颜色系列泰山玉的致色因素。     

Where have all the commons gone?

Common property resources (CPRs) have provided a basis for sustenance to countless households, especially those that lack access to private assets. Several factors have eroded the access of CPR dependent communities, such as, conscious policy decisions of the state, elite domination, the process of land consolidation and commercialization. In the period of neo-liberal reforms in India, after 1991, the nature of threats to the commons has changed. Emerging factors such as urbanization, land acquisition and real estate development have played a more significant role in depleting the CPRs. The commons have increasingly come to bear the ecological foot-print of urbanization as they got acquired or encroached upon for urban expansion and required infrastructure. This compromises the livelihood security of those who depend on them for sustenance. There is a need for debate on alternative and more sustainable models of urbanization.     

沉积和成岩因素对碎屑岩储集层质量贡献率的定量分析方法——单因素比较法*

碎屑岩储集层质量在此指其渗透率和孔隙度。影响储集层质量的因素主要是沉积方面和成岩方面。沉积方面的因素包括粒度、磨圆度、分选系数和杂基含量等,成岩方面的因素包括压实强度、溶蚀孔隙含量、胶结物类型和含量等。一种砂岩储集层的质量往往是多种单因素共同作用的结果,如何理清每个因素的具体贡献率是确定主控因素的关键。作者提出了一种分析各种沉积和成岩因素对储集层质量定量贡献率的方法——单因素比较法,并以渤中凹陷古近系东营组砂岩为例进行了演示分析。该地区东营组三角洲平原分流河道砂岩与三角洲前缘河口坝砂岩储集物性差异巨大,计算了各个因素对这种差异的贡献率,确定了主控因素:杂基含量差异的贡献率为78.5%,是主控因素;粒度差异的贡献率为2.7%,分选系数差异的贡献率为1.5%,自生黏土矿物含量差异的贡献率为15.9%,碳酸盐胶结物含量差异的贡献率为2.3%,溶孔含量差异的贡献率为1.5%,压实强度差异的贡献率为1.7%。沉积因素的综合贡献率为各沉积单因素的贡献率之和,为82.7%;成岩因素的综合贡献率为各成岩单因素的贡献率之和,为18.4%(其中溶孔的影响与其他因素相反,即为-1.5%)。因此,沉积因素是导致该储集层质量差异的主要因素。     

Family ties,preconceived images and trust: How local community defines market collaboration in the Dutch fish chain

Vertical chain collaboration is a strategy for customers’ value creation. However, Dutch fishermen are hardly participating in integrated value chains. While supply chain literature describes factors that contribute to successful chain partnerships, scarce research has been done on the dynamics of the sociocultural context for chain collaboration.In 10 semi-structured interviews, representatives of supply chain parties were asked for their perceptions on chain collaboration, trust, and the role of the local community. The interviews were directed at obtaining so-called ‘tacit’ knowledge, the non-spoken codified truths of social networks. Without generalizing, this research provides benchmarks to monitor how the different domains, laid out in this study, impact chain collaboration: community values, network participation and company competences. An overview is given of socio-economic factors blocking and enhancing chain collaboration at company and community level. Factors such as the strong bonding of family with business in tightly knit networks, a high level of social control, entrepreneurial autonomy, and loyalty as community norm hamper collaboration within the supply chain.Respondents’ discourse demonstrates that cultural codes and identity form the very core of the entrepreneur, driving rather than ‘embedding’ economic behavior. Kinship, religion and peer pressure determine ‘windows on the world’ when engaging in chain collaboration. Consequently, any analysis of economics that does not integrate sociological and psychological methodology is flawed from the outset.     

玛湖凹陷西斜坡百口泉组砂砾岩储层储集空间类型及演化特征

玛湖凹陷西斜坡百口泉组储集岩以砂质细砾岩、中细砾岩、细砾岩以及含砾粗砂岩为主,储集空间类型多样、成因复杂,关于砂砾岩储层特征认识不清。通过薄片鉴定、扫描电镜、孔渗、流体包裹体等分析资料,对砂砾岩储层储集空间类型、主控因素以及演化特征开展了系统研究。结果表明:研究区百口泉组砂砾岩储层储集空间类型以粒内溶孔为主,次为剩余粒间孔以及粒间溶孔;沉积作用、成岩作用、异常高压以及早期油气充注是影响储层发育的主控因素,异常高压减缓了压实作用的进程,使部分原生孔隙得以保存,早期油气充注为溶蚀作用的发生提供了物质条件,加大了次生孔隙空间,改善了砂砾岩储层储集物性。