Multi-layer Tectonic Model for Intraplate Deformation and Plastic-Flow Network in the Asian Continental Lithosphere

In a large area of the east—central Asian continent there is a unified seismic network system composed of two families of large—seismic belts that intersect conjugately. Such a seismic network in the middle—upper crust is actually a response to the plastic flow network in the lower lithosphere including the lower crust and lithospheric mantle. The existence of the unified plastic flow system confirms that the driving force for intraplate tectonic deformation results mainly from the compression of the India plate, while the long-range transmission of the force is carried out chiefly by means of plastic flow. The plastic flow network has a control over the intraplate tectonic deformation.     

On Liaoximordellidae Fam. Nov. (Coleoptera, Insecta) from the Jurassic of Western Liaoning, China

A new insect family Liaoximordellidae (fam. nov.) has been named for a well-preserved specimen which was collected from the Upper Jurassic outcropping west of Daxinfangzi Village, Lingyuan County, Liaoning Province. The specimen can not be put into Mordellidae or Praemordellidae because it possesses some original and intermediate characters in morphology. It serves the study of mordellid evolution. Besides, the fossil group associated with the insect is important for the stratigraphic division of the Mesozoic in western Liaoning.     

Tectonic Units and Their Fundamental Characteristics on the Northern Margin of the Alxa Block

The northern margin of the Alxa block is the junction of a tectonic units. Four first-order tectonic units are distinguished: 1. the Yagan structural zone characteristic of an immature island arc; 2. the Zhusileng-Hangwula structural zone, which was a passive continental margin in the Early Palaeozoic and was transformed into an active continental margin in the Late Palaeozoic;3. the Shalazha structural zone characteristic of a mature island arc; 4. the Nuru-Langshan structural zone, which was a Proterozoic orogenic belt and later evolved into an extensional transtional crust in the Palaeozoic. The above-mentioned tectonic units differ remarkably in sedimentary formations, magmatic rock associations, metamorphism and geochemistry and are bounded by faults between one another.     

大方不规则伊／蒙间层矿物研究

通过X射线衍射、红外光谱、热分析、理化性能测试和镜下观察等手段,确定了贵州大方猫场含黄铁矿粘土岩中主要粘土矿物为伊/蒙不规则间层矿物,其间层作用类型为R=1,即累托石型有序间层。     

丹凤及西峡的蓝晶石族矿床中石榴子石的标型特征

本文对丹凤西峡地区不同蓝晶石族矿床石榴子石进行了较系统的矿物学研究。从石榴子石的化学成分，晶体结构，红外吸收光谱特征及氧同位素组成与矿床成因类型，主变质相的相关关系，总结出了石榴子石的标型特征。     

采用阶梯抽水试验资料确定含水层参数

本文采用阶梯降深的有关公式,结合某矿区的一次多孔抽水试验资料进行试算,并和雅柯布直线法和恢复水位法求得的参数比较,汁算结果令人满意,表明该法是种简便、有效的求参手段。     

各类工程建筑的工程地质问题

本文主要论述水库工程地质问题、地基工程地质问题、区域构造稳定问题及防震、软基处理、地下工程围岩稳定性、隧道地质灾害、边坡稳定性等方面的研究现状及展望     

补偿电流对核旋分量仪的影响及补偿稳流装置

着重讨论补偿电流对核旋分量磁力仪在观测地磁场垂直分量中的影响,介绍了补偿稳流装置和在大连地磁台应用的效果。     

NUMERICAL SIMULATION OF TURBIDITY CURRENT IN RESERVOIR

I. INTRODUCTIONWhen a sediment--laden flow reaches the backwater zone of a reservoir, the suddenreduction of flow velocity causes sediment particles to settle toward the river bed. Undercertain circumstsnces, it will plunge and form a layer of sediment--water mixture flowingbeneath the water surface. This flowing layer is called the turbidity current. A turbiditycurrent is relatively stable and has important impacts on reservoir sedimentation.In the case of deep reservoirs, due to temper…     

BED FORMS AND RESISTANCE PROPERTIES OF LIGHT-WEIGHT BED MATERIAL

I. INTRODUCTIONResistance to flow in alluvial streams is one of the crucial problems in fluvial hydraulics. Despite that large amount of studies have been conducted for centuries, no perfectmethod describing and calculating the resistance to flow in alluvial streams is availablehll now. Investigation on bed forms and resistance properties of light--weight bed materials is even more scarce. USWES (1936) has conducted systematic experiments onlight--weight materials in a flume & m long an…