Sedimentary sequence and environmental evolution in the eastern south Yellow Sea during the last deglaciation and the holocene

Northwest of Cheju Island in the eastern South Yellow Sea there is an arc patch of muddy deposit which coincides with an anticlokwise eddy and thus is referred to as muddy deposit of eddy. Two drilling wells, the YSDP 102 well and the YSDP 103 well, penetrated the muddy deposit and revelated the sedimentary sequence in the sea area during the last deglaciation and the Holocene. Based on shallow seismic profiles, sedimentary features and dating data, stratigraphic units formed in the eastern South Yellow Sea, documents the path, time and process of the earliest post-glacial transgression in the South Yellow Sea are presented, the formation of the Yellow Sea warm current and its control over the Yellow Sea sedimentation are discussed, and deals with the source of the muddy deposit is dealt with.     

Relationship between magnetic fabric parameters and dynamic characteristics of deposits in different environments

Comparison of magnetic fabric parameters of deposits in different modern sedimentary environments indicates that values ofP, F andL of eolian deposits are lower obviously than those of hydrogenic ones respectively. On relationship diagrams of magnetic fabric parameters, data points of eolian samples concentrated in limited area near origin of coordinates indicate that dynamic intensity is lower with less variation; while those of hydrogenic ones depart from origin of coordinates suggest higher intensity of sedimentary dynamics. Analyses of dynamic characteristics of different sedimentary environments indicate that values of magnetic fabric parameters of deposits are determined by dynamic types and characteristics of depositional processes. Magnetic fabric analyses of deposits are effective in determination of sedimentary environments.     

断陷湖盆陆相层序过程——响应机制的单因素计算机模拟

综合考虑陆源碎屑物供给、内源碳酸盐岩没积、沉积物侵蚀与再沉积、重力流沉积以及构造升降和水平位移等诸多地质因素,建立了一个能够模拟各型盆地的综合数学物理方程式。采用自行研制的定量层序地层模拟系统,以断陷湖盆坡带（泌阳断陷双河～赵凹地区为例）,分别模拟了：①湖平面变化过程及其陆相层序响应机制;②基底构造沉降过程及其陆相层序响应机制;③物源供给过程及其陆相层序响应机制。     

潮汕平原晚第四纪沉积相与古环境演变

通过潮汕平原第四系一些钻孔的沉积相，孢粉学及＾１４Ｃ年代分析，论述了韩江，榕江及练江三角洲的古环境演变，认为有过两次以上的海侵期，而主要的三角洲韩江三角洲的发育可分为前三角洲期，古三角洲期和现代三角洲期，这些古环境的演化与南海的δ＾１８Ｏ曲线相对应。     

内陆表海含煤地层层序划分及其意义

本文提出了内陆表海含煤盆地层序界面类型和层序模式。研究表明，晚古生代海陆交替型含煤地层可划分出三个Ⅲ级层序，其分界面为Ⅲ级海平面变化的周期性界面，在华北广大地区表现为整合面。含煤层序的基本结构特点为“二元型”，与北美学者在陆边缘海含油气盆地研究中所作出的“低位－海进－高位”的典型模式有较大差异。     

用“马尔柯夫链”分析法讨论含炭岩系沉积剖面结构

用“马尔柯夫链”分析法对胶莱盆地下白垩统莱阳群含炭岩系沉积环境进行讨论，建立其沉积相模式。此含炭岩系为还原环境陆相湖泊基底堆积，接受古陆变质岩及混合花岗岩风化产物堆积，为一重要的金矿源层。     

略论西藏斯匹提页岩的地层分布

本文列出了斯匹提页岩地层的一些新剖面,并进行了划分、对比,讨论了斯匹提页岩地层的底、顶界线及沉积环境。     

庄河青堆子湾潮间带现代海洋沉积的基本特征

本文通过野外调查证实大连地区庄河县青堆子湾的海岸线在晚近地质时期以来不断向浅海推进。根据潮间带现代海洋沉积物的粒度分析资料将潮间带划分为泥质细沙型、中沙型和粗沙型三种类型的沉积环境。同时,还发现与上述环境相应的贝类生长的组合关系。     

沉积磷酸盐矿物浮选研究

实验资料指出用十八烷胺—煤油混合作捕收剂浮选沉积磷酸盐矿物。这种捕收剂具有成本低、浮选速度快的优点,同时在调浆阶段圆体百分数高,能改善浮选的选择性,粗粒浮选更容易、更有效。     

云南江川星云湖盆现代沉积的研究

本文通过对江川盆地和星云湖现代沉积作用的研究,划分了湖周围晚新生代沉积的三种相组合,并讨论了构造、气候对沉积作用的控制和盆地发育特点及其在石油地质方面的启示。