沉积

Pulling setting presents in southern China in Permian forming rift basins, which extends and develops from the edge to the inside of continent. Under the influence of Dongwu movement, two second order cycles forming by up and down of sea level happened in Yangtze and Huaxia craton. Rift basins in continental margin are primary sedimentary location of LST. But craton areas are the main deposition area of TST and HST. Weathering on land and river sediment or only thin coaly clasolite of marsh facies present mainly in LST deposition.

二叠纪我国南方总体处于拉张背景，发育了由陆缘向陆内延伸发展的裂陷盆地；受东吴运动影响，扬子和华夏克拉通遭形成了两个二级海平面升降沉积旋回；陆缘裂陷盆地是低位期沉积的主要场所，而克拉通区主要为海侵和高位期沉积，低位期主要表现为陆上风化残积、河流沉积或仅发育厚度很薄的沼泽相含煤碎屑岩。

Based on the studied materials of oil fields and outcrops in the northwestern area of China, selecting the most important oil-bearing rservoirs (fiuvial and deltaic sand bodies) in terrestrial facies lacustrine basin, utilizing the theory and method of sedimentology, this paper explores the key problems, which are the studies of depositional model, heterogeneous model and predictable model, in order to present conductive information for the application of corresponding area and similar reservoirs, simultaneously, to deeply promote the organic combination of theory and practise.

本文根据在我国西部地区油田及露头区研究的资料，选取陆相湖盆沉积体系中重要的油气储层类型—河流和三角洲沉积砂体，以沉积学的原理和方法为基础，对油藏研究中的沉积模型、非均质模型和预测模型等热门研究课题进行研究，以指导相关地区类似油藏或储层的精细描述，从而达到使理论研究和生产实践进一步有机地结合。

According to the J_2~2～J~1 strati- graphic features, rock facies characteristics and previous research, the author deem that the terrestrial environment spread all over the epicontinental sea-platform at the transgression time when the J_1 depositing, the environment character is the normal sea-platform sedimentary; the study results indicate that the location-evaporation platform environment when theJ_2~～J~1 sediment is good to the reservoir formatting and evaluating.

研究认为在嘉二~1～嘉二~2段时期沉积所处的局限—蒸发台地环境属于较有利于储层形成与演化的沉积相带；嘉一段沉积相平面展布主要形成于开阔台地环境中，属于不利于储层形成与演化的沉积相带。

Under scanning electron microscope,barite in these samples occurs as euhedral crystal,co-existing with authigenic quartz and albite with the same idiomorph.Considering the geological setting and c rystal form,it is believed that barite occurred in the study area is compara ble with that found in the Guaymas Basin,Gulf of California,i.e.,with hydrothermal origin.

通过对东太平洋多金属结核中国开辟区表层沉积物和短柱状沉积物的系统观察和分析，首次根据矿物学和地球化学两方面的证据，发现中国开辟区沉积物中热水活动及其产物的存在。X射线衍射分析表明，沉积物样品中普遍含有重晶石，部分样品中含量高达10%以上。

The modern correlation of foraminiferal thanatocoenoses with their environments can be used to interpret the core sediment record, by which the author reconstructed the sedimentary environment of the area since the late Pleistocene.

现代海岸沉积中有孔虫埋葬群与其沉积环境的关系在晚第四纪以来的海岸带沉积记录中也同样存在，据此可揭示海岸带晚第四纪以来的沉积环境演变历史。

The delta depositional system generally has three topography slope breakpoints, namely the breakpoint between topset and foreset, the breakpoint between delta foreslope and prodelta and the breakpoint between delta depositional system and normal lacustrine depositional system, of them the topography grade of the foreslope i...

三角洲沉积体系一般存在三个地形坡度转折点，即顶积层与前积层之间的转折点、三角洲前缘斜坡与前三角洲沉积之间的转折点、三角洲沉积体系与正常湖泊沉积作用之间的转折点，其中前缘斜坡的地形坡度最大。

The delta depositional system generally has three topography slope breakpoints, namely the breakpoint between topset and foreset, the breakpoint between delta foreslope and prodelta and the breakpoint between delta depositional system and normal lacustrine depositional system, of them the topography grade of the foreslope is the biggest.

三角洲沉积体系一般存在三个地形坡度转折点，即顶积层与前积层之间的转折点、三角洲前缘斜坡与前三角洲沉积之间的转折点、三角洲沉积体系与正常湖泊沉积作用之间的转折点，其中前缘斜坡的地形坡度最大。

In order to explore the grain-size distribution characteristics and geo-genetic types of land desertification in Mo Us desert, the research on the grain-size characteristics of sediments since late Pleistocene has been carried out in the desert area and neighboring area such as inside desert, sand covered loess plateau, loess plateau and river valley. The research result shows that sediments of different geologic genetic types are the fundamental material source of sandy desertification in these areas and the distinguishing of different types of the sediments is the theoretical basis of classification of different geogenetic type of sandy desertification. The contribution of different geological roles on the land desertification and its significance to prevent and deal with the land desertification have also discussed.

为了研究毛乌素沙地沉积物的粒度特征与土地沙漠化的地质成因类型，通过系统研究沙地及相邻地区晚更新世以来在沙地内部、覆沙黄土区、黄土高原和河流谷地与湖泊等不同地质构造地貌条件下所形成的沉积物粒度特征，指出不同地质成因类型的沉积物是这些地区土地沙漠化的物质基础，区分不同类型的沉积物也是构成不同地质成因类型土地沙漠化分类的理论基础，探讨了不同地质作用对土地沙漠化的贡献及其对土地沙漠化防治方面的意义。

Fourteen sediment samples with different content of Fe〓O〓 were collected from lower reach of the Liao River in China. The photodegradation of γ-hexachlorocyclohexane on the sediment surfaces was investigated to observe the effects of Fe〓O〓 and other photoinducable substances, such as TiO〓 and organic substances, on photodegradation of γ-HCH.

从辽河新民段采集了14种具有不同含量的Fe〓O〓的天然沉积物，为了探讨沉积物中Fe〓O〓和其它具有光诱导和光催化能力的物质如TiO〓和有机质成分对沉积物表面上的林丹的光解的影响，研究了γ-HCH在这些沉积物表面上的光解动力学。

The effect of incontinuous deposition on the cyclic oxidation behavior of EB-PVD TBCs was investigated in this study.

通过EB-PVD非连续沉积工艺方法沉积制备了热障涂层中的YSZ涂层，同时比较研究了非连续沉积与正常沉积热障涂层在1100℃下的循环氧化性能。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。