福建湄洲岛对台客运码头淤积分析

以岸滩固定剖面观测、沉积物搬运趋势模型、沙粒捕沙器现场观测为基础,分析造成湄洲岛台客运码头淤积的主要原因。分析结果表明,由于风、浪、流共同作用,码头建成后,在其前缘形成一个淤积区,致使码头的使用受到影响。     

氢化物冷阱捕集法原子吸收测定海水中无机锡

采用硼氢化纳还原法将海水中无机锡还原为挥发性锡化氢,氮为载气将锡化氢从反应器吹出,并于液氮冷阱中捕集,捕集后将锡化氢载入氢焰原子化器进行原子吸收测定。对该还原反应、氢化物转移、捕集及原子化实验条件进行了详细研究。实验结果表明:该法中可氢化元素As、Sb、Se等超过被测物浓度200倍时亦无明显干扰,检出限为0.0060μg/dm~3,对0.050μg/dm~3 Sn浓度的样品变异系数为±8％。标准曲线表明,在0—0.050μg/dm~3 Sn浓度范围内有理想的线性关系。对海水介质测定,该法所作校准曲线与蒸馏水介质具有相同的斜率,采用NaOH共沉淀预富集可提高灵敏度5—10倍,便于海水样品保存,总回收率95％以上。     

会昌周田盆地岩石地层格架及盆地演化

通过对周田盆地晚白垩世地层单位的划分、描述,结合多重地层划分的理论,初步 该 岩石地层格架,并对盆地的演化进行了分析。     

EFFECTS OF WATERSHED RECLAMATION ON INFLOW AND SEDIMENT LOAD IN THE FENHE RESERVOIR

１ＩＮＴＲＯＤＵＣＴＩＯＮＴｈｅＦｅｎｈｅＲｅｓｅｒｖｏｉｒｗａｓｉｍｐｏｕｎｄｅｄｉｎ１９６１ｗｉｔｈｔｏｔａｌｓｔｏｒａｇｅｃａｐａｃｉｔｙｏｆ７２０ｍｉｌｉｏｎｍ３．ＩｔｉｓｔｈｅｌａｒｇｅｓｔｒｅｓｅｒｖｏｉｒｉｎＳｈａｎｘｉＰｒｏｖｉｎｃｅ...     

从层序地层学角度论岩石地层单位界线的厘定与优化

以碳酸盐台地内部、边缘及盆地３个不同相区的岩石地层基本单位———组为实例,从层序地层学角度论述了岩石地层单位界线的厘定与优化方案,认为以层序（尤其是Ⅰ型层序）界面及体系域之间界面（即初始海泛面、最大海泛面等）作为一些组的新界线,将会更有利于野外岩石地层单位的识别与对比。     

五台山区早元古代地层层序探讨

根据大量的区调资料,利用断陷盆地的分析方法,通过地层剖面的横向对比,认为滹沱群的豆村亚群、东冶亚群以及系舟山的下元古界七东山组为侧向相变关系,郭家寨亚群形成于其后。在详细研究岩性、岩相的变化规律以及盆缘断裂特征的基础上,初步建立了早元古代的岩石地层格架,分析了早元古代裂陷海槽的发育史。     

火成岩油气藏成藏机理探讨

本文以济阳坳陷罗151块火成岩油气藏为例,通过对侵入岩体围岩的生油条件、辉绿岩体储集空间及油气运移与圈闭形成的时空配置关系等方面的研究,综合岩心、地球物理及试油等方面的资料,具体阐述了罗151块火成岩油气藏的特点及成藏模式。研究表明,火成岩作为一种特殊类型的油气储集层,形成具工业价值油气藏须具备一定的石油地质条件：充足的石油来源、有利的生储盖组合、由裂缝—孔隙系统构成的储集空间、有效的圈闭（圈闭形成时间与油气运移时间的相互关系、圈闭位置与油源区的空间关系）及必要的保存条件等;但由于火成岩油气藏储集空间类型复杂、成因多样,其平面及纵向储层非均质性差异极大,开展对不同类型火成岩储集层储集空间成因研究,是解决减小火成岩油气藏勘探风险及合理布置开发井网问题的关键。     

塔里木盆地孔雀河斜坡地区中新生代地质特征及油气远景评价

塔里木盆地孔雀河斜坡地区中新生界构造是总体呈东西向展布的复式向斜构造,横剖面上呈“Ｗ”型。该区由北向南可划分三个背斜构造带：群克 新开屏构造带;阿拉干构造带;古城墟低凸构造带。侏罗系生油岩厚１００～４００ ｍ ,并有较好的生、储、盖组合,各种圈闭众多,有望在该区找到大油田。     

Particulate Flux and Cd/P Ratio of Particulate Material in the Pacific Ocean

Time-series Mark 7 sediment traps were deployed at three stations at 0°N, 13°N and 48°N along 175°E to investigate seasonal and spatial variations of particulate material flux. Chemical analysis of particulate material was performed for four major chemical components, viz. opal, CaCO₃, organic material and clay minerals, Cd and P in the particulate material were also determined. We discuss the characteristics of particulate material at each site and the transportation of Cd and P to deep water by the particulate material. The total mass fluxes and variation of fluxes at each site reflect oceanographic conditions, such as biological productivity and kind of major planktonic organisms. At the northern site, large mass fluxes with a spring bloom and high ratios of opal are characteristic. Relatively small mass fluxes with high ratios of CaCO₃ are distinct, and dissolution of CaCO₃ due to sinking is recognized in the middle latitude and 0°N sites. The larger flux at the lower trap than the upper trap at the equatorial site suggests influence by lateral transport in the deep water. Distinctive decreasing Cd/P ratio and CaCO₃ concentrations in the particulate material with increasing depth suggests that the change of Cd/P ratio in the intermediate and deep water occurs through the dissolution of CaCO₃. The dissolved Cd/P ratios in the deep water are proportional to the age of the deep water in the Atlantic but not in the Pacific. This is explained by the difference of kinds of particulate material transporting Cd and P in the deep water between the oceans. That is, the major planktonic organisms are planktons of CaCO₃ tests in the Atlantic Ocean and diatoms of opal tests in the North Pacific Ocean.     

南海万安盆地的构造样式与构造圈闭

通过对大量多道地震剖面的解释和分析,认为南海万安盆地发育有潜山披覆、基底张性断块、挤压背斜和骨牌式构造等４类典型构造样式,并形成背斜型和断块型两类主要的构造圈闭,构成了盆地内重要的油气圈闭类型。