Influenced by flood dominated current in the flood channels , the characteristics of surface sediments , such as grain size , light and heavy minerals , micro - paleontology and magnetism in the flood channel are very different from those in the ebb channels , this kind differences is the response for complex hydrodynamic in estuary 河口涨潮槽在涨潮优势流作用下，槽内表层沉积物的粒度、轻重矿物、微体古生物和磁学等特征不同于落潮槽相应的沉积特征，体现了沉积物的分布对河口复杂水动力的响应。
Abstract : according to sedimentary characteristics of the carboniferous taiyuan formation in feicheng coal field , including lithology , size distribution , sedimenta ry structure , geochemistry and paleontology etc . , the carboniferous paleoenvironme nt of this area is divided into carbonate open platform and tidal flat environme nt . it is recognized that the taiyuan formation is formed in the epicontinental c oast which is dominated by the tidal . the peat flat is the important paleoenviron ment for coal accumulation . the tidal channel destroys the coal bed . the pulsative vibration of the crust is the major factor which controls the evolution of the sedimentary environment and the coal accumulation 文摘:根据肥城煤田石炭系太原组的岩性、粒度分布、沉积构造、地球化学及古生物等沉积特征，将该区晚石炭世古地理划分为碳酸盐开阔台地和潮坪环境，认为太原组形成于潮汐作用为主的陆表海海岸，泥炭坪是成煤的重要古地理环境，潮渠对煤层有一定的破坏作用，地壳的脉动性振荡作用是控制沉积环境演化和聚煤作用的主要因素。
Based on the direction of sources and the ratios of sandstone to formation of sedimentary rocks , together with the sedimentary structures and textures , paleocurrent direction and the characteristics of paleontology , etc . , the planimetric maps of sedimentary facies of each stages in the studied area are compiled in order to recognized the extension of dominant facies and the evlotionary history of sedimentary environment , hi the stage of benxi and taiyuan , lagoon - tidal flat sediments are widespread in the area , and the deposits of estuary , lagoon and small delta in the northwest margin of ordos 以物源方向和沉积岩砂地比值为基础，结合沉积结构构造、古水流方向及古生物特征等，编制了研究区各期次的沉积相平面图，以识别优势相展布和沉积环境演化。本溪期和太原期研究区泻湖?潮坪沉积分布广泛，西北缘发育河口湾、泻湖及小型三角洲沉积。
The sediments of the incised valleys show an upward - fining succession , and can be grouped into four sedimentary fades : gravel lag - deposit of in - channel to partly over bank sediments of a meandering river , flood plain - estuary , estuary - shallow marine , and estuary sand bar , based on lithology , paleontology , and sedimentary textures and structures 根据岩石学、沉积结构和沉积构造特征，本区下切河谷充填沉积物具有向上变细的沉积层序，可以划分为4个沉积相类型：河床滞留沉积物到部分曲流河沉积体系的边滩沉积、河漫滩河口湾沉积、河口湾浅海沉积和河口湾砂坝沉积。
In order to understand how darwin builds a long argument to persuade readers to believe his evolutionary theory is better than creationism and lamarck ' s transmutation theory , one needs to know the emergence of this revolutionarily scientific theory is not only related to geology , paleontology , comparative anatomy , morphology , and embryology but also connected with his contemporary background of religion as well as economy 这门课拟从科学史的观点，来带学生阅读与讨论达尔文《物种源始》这本科学文本，了解此一个革命性的科学理论的生成，不但涉及地质学、古生物学、比较解剖学、形态学、胚胎学等自然学科，也关连到宗教、经济等人文与社会面的诸多背景，进而认识达尔文如何在此书中建构论证与说服读者相信他的演化论优于当时与其竞争的神创说和拉玛克的理论。
