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层序
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  sequence
    SEQUENCE STRATIGRAPHY ANALYSIS OF WAN'AN BASIN
    南沙海域万安盆地层序地层分析
短句来源
    Sequence IV-2 is upper Shimajiri group, which is made up of siltstone and mudstone.
    层序IV-2,为上新世岛尻群上部粉砂岩、泥岩,靠下夹有砂岩或凝灰岩。
短句来源
    Based on the analysis of geological and geophysical data in 2003-2004 of Jiaozhou Bay, The sequence stratigraphical model in shore area is formed.
    通过分析2002-2004年胶州湾地区的全新的地质与地球物理的调查资料,结合层序地层学与沉积学基本理论,在胶州湾近岸小区域内探讨了层序地层模式。
短句来源
    Superse- quence I is made up of A (T_0-T_1), B (T_1-T_2) and C (T_2-T_3) sequence members, it mainly formed in the basin's wholly subsidence stage, the regional cap rock of Wan' an basin occurs in sequence B_5 and B_4 of the sequence Member B.
    超层序Ⅰ由A(T_0-T_1),B(T_1-T_2),C(T_1-T_3)三个层序组组成,主要形成于盆地整体沉降阶段,万安盆地的区域性盖层产于层序组B之B_5及B_4层序中。
短句来源
    ON PRELIMINARY CLASSIFICATION OF SEDIMENTS AND SEDIMENTARY SEQUENCE IN OKINAWA TROUGH
    冲绳海槽沉积物分类和层序划分的初步意见
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  “层序”译为未确定词的双语例句
    There are 4 and 5 graded rhythmites in core 61KL, whicha re typical turbidites transported from the eastern active Mariana Arc.
    61KL岩心有4或5个递变层序,为典型的浊流沉积,物质主要来自东部活动的马里亚纳火山弧,由浊流搬运而沉积。
短句来源
    Couplet preservation rate is 0 74% on centennial scale,and 99 26% of tidal cycles have no laminations left because of non deposition and erosion.
    百年尺度潮坪层序层偶的保存率仅为 0 .74% ,99.2 6 %的潮汐周期由于侵蚀或无沉积而没有纹层保存下来 ,形成间断。
短句来源
    VERTICAL SEQUENCES AND SEDIMENTARY ENVI RONMENTS OF THE TAOYUAN BARRIER-LAGOON AREA, RONGCHENG, SHANDONG PROVINCE
    山东荣成桃园砂坝-泻湖地区的垂直层序和沉积环境
短句来源
    THE COASTAL GEOMORPHOLOGICAL STEPS AND TYPES OF LINGSAN BAY AND ITS NEIGHBOUR REGIONS OF SHANDONG PROVINCE
    灵山湾及其附近沿岸地貌层序与海岸特征
短句来源
    AGE ANALYSIS OF SEISMIC SEQUENCES IN THE SOUTHWESTERN SOUTH CHINA SEA
    南海西南部地震层序的时代分析
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  sequence
We shall construct a generating set of a nonfinitely generated Ga-invariant ring given in Freudenburg's counterexample by making use of an integral sequence which was constructed inductively by Freudenburg.
      
The classical Rudin-Shapiro construction produces a sequence of polynomials
      
A Generalized Sampling Theorem with the Inverse of an Arbitrary Square Summable Sequence as Sampling Points
      
In this article a generalized sampling theorem using an arbitrary sequence of sampling points is derived.
      
The mathematical concept of frames is utilized in the analysis of the properties of the sequence of sampling functions.
      
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Based on the data from drilling records and experiments, vertical and lateral variations in palaeotopographic strata at the end of later Pleistocene due to sea level flectuation and the resulted different sedimentary bodies in Shanghai region are expounded from a viewpoint of sedimentary differentiation. The Holocene sedimentation is then divided into five sedimentary provinces that belong to two major sedimentation regions.

本文依据上海地区的钻孔资料和实验数据,并以沉积分异的观点,阐述上海地区在晚更新世末期古地貌的基底上,由海面波动引起沉积物在纵向和横向上的变化,从而导致在层序上互异的沉积体。并将全新世沉积划分为两个沉积大区的五个沉积区。

The coasts from Chengshanjiao to Shidao are located in east Shandong Peninsula, whose geomorphological and sedimentary characteristics may be a type of the irregular coasts developed i nbedrock of Shandong Peninsula.The coasts in studied area can further be subdivided into four types: erosion coast, erosion and deposition coast, graded coast in bay and coast with large tombolo. Differences of coast types directly influence on the source and amount of sediments transported along coast, the variety of coastal...

The coasts from Chengshanjiao to Shidao are located in east Shandong Peninsula, whose geomorphological and sedimentary characteristics may be a type of the irregular coasts developed i nbedrock of Shandong Peninsula.The coasts in studied area can further be subdivided into four types: erosion coast, erosion and deposition coast, graded coast in bay and coast with large tombolo. Differences of coast types directly influence on the source and amount of sediments transported along coast, the variety of coastal sand bodies and the development stages of barrier-lagoon systems. The barrier-lagoon depositional systems are more important in coastal sedimentary units, distributed mainly in bays of Rongcheng, Sanggou, Shidao and tombolo areas of Moye Island and Chudao Island. Barrier-lagoon depositional system consists of three subdivisions: barrier bar, bay in front of the bar and lagoon at the back of the bar. The distribution of sediments in bays is controlled by hydrodynamics and postglacial sealevel fluctuations. In nearshore zones of the bays clay and sandy clay are usually found, this may be caused by circulated tidal currents. The heavy minerals in the bays are the same as those in adjacent lagoon and barrier, but their percentage is different, meaning variety of the hydrodynamics in these sedimentary units. In these bays with salinity of 32-33‰, the microfauna are characterized by neritic environment. The grain size distribution and heavy mineral assemblage in barrier are controlled by bedrocks. In north area of studied coast, where granites are distributed, the bars consist of coarse sands and fine gravels. Epidotes and hornblende predominate in heavy minerals. In middle area where metamorphic rocks outcrop, the barrier bars are composed of medium and coarse sands, and the percentage of hornblende may be above 60%. In south area where the sienites outcrop, the bars consist mainly of medium sands, and the heavy mineral assemblage is characterized by zircon, titanioferrite, and magnatite. The medium and large scale cross-beddings with low angles seawards dipping appear in the bars, in which heavy minerals, shell debris, gravels, and inverse graded bedding are common. The beddings in the bar crest show arch shape, or cross in pyramid shape. In the bar lee the parallel beddings and landward dipping stratifications with high angles appear. The lagoon in studied area can be divided into two types: enclosed and semi-enclosed. The mud deposits increase and salinity decrease with lagoon enclosing. In some semi-enclosed lagoons reworked by human, however, the salinity can be up to 37.19-43.24‰, The hyperhaline and hypohaline waters in lagoon directly influence micro-fossil assemblages that are characterized by small amount of microfossil numbers, low species diversity, and abundance of euryhaline elements.The tectorium along the coasts of Rongcheng contains only one bed with marine fossils, which is underlain by weathered crust and composed of transgressive and regressive sequences. The barrier-lagoon sedimentary systems are present in regressive sequence, belong to regressive type. Based upon the data of borings, lagoon deposits are underlain by bay-neritic facies sediment and further divided into bay-lagoon, semi-enclosed lagoon and enclosed lagoon units, therefore, bay-lagoon, semi-enclosed lagoon and enclosed lagoon may be distinguished. The tombolo-lagoon behind Moye Island and Chudao Island have been formed, or lagoon sediments are preserved. The tombolo development behind large islands may be one of the ways of barrier-lagoon system formation.

山东东部成山角至石岛海岸属基岩岬湾岸,进一步可分为侵蚀岸,侵蚀堆积岸,湾内初期夷平岸及连岛砂坝岸等4种类型。本区砂坝-泻湖体系发育良好,泻湖有海湾-泻湖,半封闭泻湖和封闭泻湖等。海岸砂坝粒度和重矿物组合受制于基岩,如南段正长岩分布区,砂体主要由中砂构成,重矿物中锆石,钛铁矿占优势。钻孔资料揭示了海湾、泻湖、砂坝以及各类泻湖沉积的垂直层序,反映了海湾封闭而成泻湖的沉积过程,以及泻湖消亡的历史。

The field investigations of hydrology and sediment in estuaries of the Changjiang(Yangtze), Nanliujiang and Qiantangjiang Rivers show that flood tidal current is themain agent of upstream transporting sediment. The "light" and heavy mineralsupstream transported may be represented, respectively, by foraminifera and saponite,which have been found not only in distributaries, but also in Holocene sedimentarybeds of deltas. The study of upstream transportation of marine fossils and marineauthigenic minerals, such...

The field investigations of hydrology and sediment in estuaries of the Changjiang(Yangtze), Nanliujiang and Qiantangjiang Rivers show that flood tidal current is themain agent of upstream transporting sediment. The "light" and heavy mineralsupstream transported may be represented, respectively, by foraminifera and saponite,which have been found not only in distributaries, but also in Holocene sedimentarybeds of deltas. The study of upstream transportation of marine fossils and marineauthigenic minerals, such as saponite has further interpreted the formation of post-glacial transgressive river-channel fill sequence in the Changjiang (Yangtze) RiverDelta area and some problems of Holocene transgression in the Taihu area.

在长江、南流江、钱塘江河口地区的现场观测表明,涨潮流是使沉积物溯河搬运的主要动力,而有孔虫和铁皂石则分别代表溯河搬运的“轻”、重矿物。这种海相微体化石和海相自生矿物不仅见于河口地区,而且出现在全新世沉积层中。沉积物溯河搬运的研究进一步说明了长江三角洲地区海进河床充填层序的形成和解释了全新世太湖地区的某些海侵沉积问题。

 
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