The Lower/Upper Cretaceous boundary in Songliao Basin is,therefore,between the Quantou and Denglouku formations,instead of between the Quantou and Qingshankou formations.2.The dark mudstones and shales in the Member 1 of Qingshankou Formation are of high organic carbon and low diasteranes contents.Organic geochemical characters are illustrated by biomarkers of 28,30-bisnorhopane and gammacerane,and positive excursion of kerogen isotopes.It is suggested that the dark mudstones and shales in the Member 1 of Qingshankou Formation are the products of lake anoxic period.It corresponds to the oceanic anoxic event at Cenomanian-Turonian boundary in Cretaceous.3.Based on the study of biostratigraphy,chronostratigraphy,magnetostratigraphy and event stratigraphy,a correlation of the lacustrine sequence to marine standard has been proposed,i.e.,the Quantou Formation corresponds to Cenomanian stage,Qingshankou Formation correlates to Later Cenomanian-Early Turonian,Yaojia Formation to Later Turonian-Coniacian,Nenjiang Formation to Santonian-Campanian.Sifangtai and Minshui Formations to Maastrichtian. 4.Analysis of lithology,lithofacies and microfossils of Cretaceous in Songliao Basin, shows that shore and shallow lake facies yield the most abundant microfossil groups,and the predelta and deltaic distributary plain facies rich in fossils as well.In the shore and shallow lake areas during the high level periods(such as Qingshankou and Nenjiang sedimentary periods),the lacustrine biota are of high diversity and high abundance.

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The deltas differ from typical deltaic model.Deltaic front subaqueous distributary channel sand bodies and deltaic plain distributary channel sand bodies are the skeleton sand bodies of meandering stream-shallow sea delta and braided streain-shallow lake delta respectively but not tranditional deltaic front river mouth sand bars.

這兩類三角洲與經典的三角洲模式不同的是天堂综合在线观看视频，三角洲前緣水下分流河道砂體和三角洲平原分流河道砂體分別構成了曲流河淺水海相三角洲和網狀河淺水湖泊三角洲的骨架砂體，而不是傳統(tǒng)認為的三角洲前緣河口砂壩操来操去网站。

In this paper, two dimensional shallow flow—pollutants coupled model, which applies uninstructed grid finite volume method and Riemann approximate solver, is used to gain the trend of hydrodynamics and water quality change under the condition of driving force. Mechanism of nitrogen and phosphorous circle of WASP5 is considered in the water quality part of the model according to nutrition actuality of shallow lake in the cities.Xuanwu Lake is object of research in this paper.

本文針對城市淺水湖泊富營養(yǎng)化加劇現(xiàn)狀国产日韩欧美色另类，結合WASP5模型中有關氮和磷的循環(huán)機理，并將該機理寫入已有的二維淺水流體水量模型中加以耦合亚洲第一天堂AV综合网，應用在無結構網格下的有限體積法與黎曼近似解求解的方法国产99久久久国产精品性色，求解湖泊在外驅動作用下的湖泊水動力和水質因子氮和磷的變化。

In order to know physical properties of Eogene reservoir origin type in Gudong area clearly,the physical properties of the main reservoir origin types were studied in detail including sandbodies of braided-river delta, meandering-river delta, shallow lake and bathyal lake.

為詳細了解孤東地區(qū)古近系儲層成因類型的物性特征美女宗合网，分別對其主要的儲層成因類型———辮狀河三角洲砂體911国产主播在线观看、曲流河三角洲砂體欧美色精品视频在线观看9、淺湖砂體和半深湖砂體的物性做了詳細研究免费的精油按摩毛片。

In order to know physical properties of Eogene reservoir origin type in Gudong area clearly,the physical properties of the main reservoir origin type s were studied in detail including sandbodies of braided-river delta, meandering-river delta, shallow lake and bathyal lake.

為詳細了解孤東地區(qū)古近系儲層成因類型的物性特征乱熟女伦熟女的网站，分別對其主要的儲層成因類型———辮狀河三角洲砂體、曲流河三角洲砂體毛片在线视频网站、淺湖砂體和半深湖砂體的物性做了詳細研究怼色逼玖玖。

Early for the rapid accumulation of a class molasse stone construction, medium-shallow lake is the foreshore - semi-deep lake sediments (mainly covered reservoir sedimentation period), advanced to the river swamps of the deposition, thus to the Early Cretaceous as the main lake sediment Stage came to an end.

早期為快速堆積的一套類磨拉石建造，中期是濱淺湖-半深湖沉積十八禁网站免费观看、晚期為河流沼澤相沉積无码高清免费国区av在线不卡一卡，至此以早白堊世為主體的湖盆沉積階段宣告結束。

Qaidam basin ; Tertiary ; shore\|lake and shallow\|lake subfacies ; lake delta facies

柴達木盆地如何看毛片；第三系国产免费久久久久AV片；濱—淺湖灘壩亞相；湖泊三角洲相

A comprehensive study on petrology, structures, facies models, facies associations and sedimentary systems in this paper shows that the main facies in Tertiary are shore-lake and shallow-lake subfacies, and lake delta facies from low-Gancaigou formation to low-Youshashan formation.

對該地區(qū)的地面啊啊啊网站免费观看、井下巖性和巖相進一步研究表明欧美极品第一，自下干柴溝組至下油砂山組的儲集砂體主要為濱一淺湖灘壩亞相和湖泊白三角洲相。

The Es formation was divided into seven third order sequences based on the seismic, drilling and logging data, and plans deposition system plane distribution maps of different time were plotted by dominance phase principle. The lower Es4 is flood-overlake facies mainly; the upper Es4 is meandering stream and braided river delta deposition above the shore shallow lake background; in the Es3 period, the south mainly developed braided river, meandering stream delta, the northeast area main developed meandering stream delta, the middle area mainly developed semi-deep lakean d deep lake sediments. From lower Es3 to upper Es3, the delta scale gradually increased and the depositional area gradually moved to the east and the southeast; the Es2 period was dominated by shore-shallow lake sediments and widely developed braided river delta and delta deposits; the Es1 period was dominated by shore-shallow lake shoal deposits, and in the south developed meandering stream and braided river delta deposits.The lothological traps of the Shahejie group are mainly fluxoturbidite and stratum lateral pinch-out, and its formation and the distribution of the lothological trap were controlled mainly by the basin structure characteristic, palaeogeomorphology and tectonic activity and so on. It had a beneficial geological condition to develope sublacustrine slump turbidite fans in Jishan, Jiangjiadian and Wawu.

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By studying reservoir rock characteristics, diagenesis and physical property, investigation showed that there were distributary channel, branch channel, mouth bar, distal bar, sand sheet, lakeshore, shallow lake and limestone flat . we concluded that the reservoir of N1～N21 is low porosity and permeability reservoir with the types of primary porosity and secondary intergranular porosity, which is in the early diagenetic stage B into the late diagenetic stage A subperiod. The role of effecting reservoir physical property is deposition, cementation, dissolution and tectonic rupture. After researching of reservoir, we divided it into three categories and division the favorable facies belt and relatively favorable. We think that the favorable facies belt is braided river delta front and partly shallow lake in east of the Fault Ⅶ. favorable reservoir is in the first and the second class.

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