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system tracts
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  体系域
     Having analysed seismic, drilling and crop data of Carboniferous system in the Tarim basin, we divide Carboniferous system into three sedimentary sequences (CⅠ、 CⅡ、 CⅢ ) or eight depositional system tracts (CⅠ1、CⅠ2、C3、 CⅡ1、 CⅡ2、 CⅡ3、 CⅢ1、 CⅢ2 ).
     根据塔里木盆地有关石炭系地层的地震资料、钻井资料和露头资料,将其分为3个三级沉积层序(CⅠ、CⅡ、CⅢ)和8个沉积体系域(CⅠ1、CⅠ2、CⅠ3、CⅡ1、CⅡ2、CⅡ3、CⅢ1、CⅢ2)。
短句来源
     According to the facies migration characteristics and superimposing patterns of system tracts in the reference well, the standards for identifying two types of terrigenous sequences (type Ⅰand Ⅱ) and for their system tracts have been established.
     根据参照井处的沉积相迁移特征及体系域叠置样式 ,建立了在参照井的背景下 ,Ⅰ型与Ⅱ型陆相层序划分及其层序界面判识标准 ,以及低水位体系域 (LST)、水进体系域 (TST)、高水位体系域 (HST)及水退体系域 (RST)的识别模式。
短句来源
     According to the analysis of the allucial-fluvial facies deposit and the changing of accommodation, the Kongdian formation in this area is divided into three four-classed sequence, which one include two system tracts.
     通过对八面河地区孔店组河流-冲积相地层的分析,从可容空间变化的角度分析了该地区的层序地层特征,将该地区孔店组地层划分为三个四级层序,每一个层序包括两个体系域
     Characteristics of time-space combination of lowstand system tracts and their exploration significance in eastern Qiongdongnan basin
     琼东南盆地东部低位体系域的时空组合特征及油气勘探意义
短句来源
     Sequences Ⅱ1 and Ⅱ3, the products of initial depression stage and shrinking stage, are semicycles composed of alluvial plain and sulphate lake system tracts. Boundary faults were more active in initial depression stage than in shrinking stage.
     层序Ⅱ_1和层序Ⅱ_3分别是湖盆初陷阶段和萎缩阶段的产物,均为由冲积平原体系域和硫酸盐湖体系域构成的半旋回式二元结构,体现了干旱气候条件下湖盆的冲积-充填特征,但湖盆初陷阶段的边界断裂活动强度比湖盆萎缩阶段要大.
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  体系域中
     In Daqingzijin region situated in front of the deltaic sandstone body of Baokang,sandstone bodies are widely spread in sequence S1 and S2 of lowstand system tracts which are main oil-bearing strata in that region.
     位于保康三角洲砂体前缘带的大情字井地区 ,在层序S1和S2低位体系域中砂岩分布广泛 ,为该区的主要含油层段。
短句来源
     and shallow marine shelf, shallow carbonate platform, coastal plain and mixed clastic-carbonate systems were developed in trangressive system tracts. Except for river system, all other systems were developed in highstand system tracts. The reservoirs were mainly developed in the littoral system of highstand system tracts.
     低位体系域以发育河流沉积体系为特征,海侵体系域发育有浅海陆棚、浅水碳酸盐岩、海岸平原、碳酸盐岩与碎屑岩混合沉积体系,除河流沉积体系外,其它7种沉积体系在高位体系域中均有发育,研究区主要储集砂体分布于高位体系域的滨岸沉积体系中。
短句来源
     The paper lays emphasis on the analysis of system tracts(LST,TST,HST)formedin Pinghu Formation(Eocene,Ⅱ_2-Ⅱ_6),the characteristics of facies,logs and seismics invarious system tracts based on the data concerning seismic,drill,logs etc,and several se-quences in Huagang Formation(Oligocene,Ⅲ_1-Ⅲ_2)。
     本文侧重分析了始新世平湖组(Ⅱ_2-Ⅱ_6)发育的低位体系域、海进体系域和高位体系域,并利用地震、钻井、测井等资料论述了不同体系域中的各种沉积相的沉积、电测曲线及地震相特征。 同时,对渐新世花港组(Ⅲ_1-Ⅲ_2)的层序也作了分析。
短句来源
     Coal accumulation is mainly rela t ed to the fandelta and near shore lacustrine marsh depositional systems in t he lowstandtransgressive system tracts.
     其中以低水位水进体系域中的扇三角洲、辫状河、滨浅湖湖沼沉积体系与聚煤作用具有密切关系.
短句来源
     Isotope of carbon and oxygen in the ingression of water system tracts in Qianjiang Formation of Qianjiang depression is lighter than those in the highstand and lowstand system tracts.
     潜江凹陷潜江组的碳、氧同位素在水进体系域中较轻 ,而在高位和低位体系域中较重 ;
短句来源
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  “system tracts”译为未确定词的双语例句
     The E (2-3)s~l 3 organic-rich hydrocarbon source rocks was found first during the seventh five year plan in the well Niu38, then followed by E (2-3)s~u 4 and E (2-3)s~l 1. The three sedimentary unit all belong to the lacustrine transgression system tracts of different third-order sequence formed during the basin intense rift stage.
     “七五”期间在牛 38井钻探过程中发现了沙三下亚段 (E2 -3 s下3 )“富集有机质”烃源岩 ,其后又相继发现了沙四上亚段和沙一下亚段 (E2 -3 s上4和E2 -3 s下1 )两套“富集有机质”烃源岩。
短句来源
     Third-order sequencesⅠ,Ⅱ,Ⅲ,Ⅳ,Ⅴ,Ⅵ,Ⅶ are rift lacustrine basin sequence, and can be divided into three system tracts, that is low stand system tracts, lacustrine transgressive system tracts and high stand system tracts.
     其中层序Ⅰ、Ⅱ为裂谷初始期湖泊层序,层序Ⅲ、Ⅳ、Ⅴ为裂谷强活动期湖泊层序,层序Ⅵ为气候层序,层序Ⅷ、Ⅸ、Ⅹ为河流层序。
短句来源
     D3 - D2 boundary surfaces in various sedimentary fades are discussed, the D22 top surface of transgressive system tracts lies in the upper sequence, and is chose to the stratigraphic boundary defined by conodonts in thefield.
     讨论了存在于不同沉积相中的D_3/D_2界面,认为该界面置于D_2~2上部层序之上的海进体系域顶面,与以牙形类为准确立的界线很接近,但其更利于野外实际工作;
短句来源
     The SQ2 is composed of the shelf margin system tracts (SST), TST and HST, its TS is identical with the lithostratigraphic boundary between the Yuntaiguan and the Huangjiadeng Formation, and the chronostratigraphic boundary between the Givetian and the Frasnian.
     SQ_2由SST、TST和HST组成。
短句来源
     It has been found that there are distinct differences in the abundance of trace elements and the values of δ43C、 and δ18O be-tween condensed sections and the system tracts above and below them, and these differehces show similar characters in different condensed sections.
     通过分析发现,密集段由于形成于较特殊的环境条件下,故其微量元素丰度、δ43C、δ18O值等与其下的海进体系域和其上的高水位体系域相比,具有明显的差异,且这种差异在不同的密集段中显示出相似的变化特征。
短句来源
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  system tracts
Cores were characterised by differentdepositional sequences associated with late Pleistocene-Holocene lowstand (LST), transgressive (TST) and highstand (HST) system tracts.
      
Each system tracts is characterised by a particular evolution of the isotope and MS curve:--Biostromal Unit: the biostromes are built by lamellar and branching stromatoporoids and massive metazoans.
      
This paper proposes a sedimentological analysis based on classical petrology, which leads to the identification of 19 fourth order sequences, forming three third order system tracts.
      
Within this sequence, gas appears to have accumulated in the Holocene deposits associated with the latest transgressive and highstand system tracts.
      
The sequence includes three system tracts: lowstand system (10?000 to 8700 years BP), transgressive system (8700 to 7000 years BP), and regressive system (7000 to Recent).
      
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The ancient basin of Paleogene in Jizhong region is of the faulted depression type. In the depression exist fourteen dustpan-like sags and six uplifts. The regional structural characters of the depression are that depressions' being divided into east and west parts and its evolution history determine the features of the fluvial-lacustrine system and herein the sedimentary tilling. The sedimentary filling in Es2-3 of Jizhong Basin features the fluvial-lacustrine system being divided into two parts: the west part...

The ancient basin of Paleogene in Jizhong region is of the faulted depression type. In the depression exist fourteen dustpan-like sags and six uplifts. The regional structural characters of the depression are that depressions' being divided into east and west parts and its evolution history determine the features of the fluvial-lacustrine system and herein the sedimentary tilling. The sedimentary filling in Es2-3 of Jizhong Basin features the fluvial-lacustrine system being divided into two parts: the west part belongs to standard plain type rivers with complete fades sequences; the east is a lake region. The distribution of the system is not mainly controlled by the local dustpan-like sags. In addition to ordinary rivers there are short ancient rivers of mountain-foot type scattering along the periphery of the lake basin. The evolution process of the sags consists of three great cycles and six secondary transgression and regression cycles, which governs the longitudinal distribution of the sand bodies in the lake basin. The application of seismic stratigaphy to the study of sedimentary filling models in the depression offers plenty of geological information. The reservoirs so far discovered in Jizhong Basin all are sand bodies of lake sediment which fall into six types, the formation of which appears to be determined by the ancient river type and topographic features, and the distribution of which seems to be controlled by ancient rivers as well as the communicated waters. Jizhong region can be classified into four groups and six subgroups of sedimentary system tracts, thus characterizing the sedimentary filling in Es2_3 in the region.

冀中早第三纪古盆属断陷型拗陷。拗陷内包括14个箕状凹陷和6个凸起。拗陷的东西分带及拗陷演化史决定拗陷内的河湖沉积体系及沉积充填特征。沙二期、三期冀中古盆的沉积特点是河湖体系的东西分区性:西部为正常的平原型河流,河流相序完整;东部为湖区。河湖体系的分布不受局部箕状凹陷所控制。古流除正常河流外,还有短流程山麓型河流,仅分布在湖盆周缘。拗陷演化分为了大周期及6个次级水进、水退周期,控制着湖盆砂体的纵向层位分布。应用地震地层学研究拗陷沉积充填模式可提供丰富地质信息。目前所发现的储层均属湖成砂岩体。冀中古盆有6类湖成砂岩体,其形成受古流类型及地貌特征所决定;其分布则受古流特征及连通水域所控。

With the use of sequence stratigraphy principle, the low Tertiary sediments in the Langgu depression can be divided into three sequences; sequence consisting of Sha-4 member and Kongdian formation,Sha-3 member sequence, and sequence of Sha-2 member and Dongying formation. Each sequence can be subdivided into lowstand, transgression and high-stand depositional system tracts which consist of basin-floor fan, slope fan,slump fan, condensed section and various progradational wedges. The preliminary application...

With the use of sequence stratigraphy principle, the low Tertiary sediments in the Langgu depression can be divided into three sequences; sequence consisting of Sha-4 member and Kongdian formation,Sha-3 member sequence, and sequence of Sha-2 member and Dongying formation. Each sequence can be subdivided into lowstand, transgression and high-stand depositional system tracts which consist of basin-floor fan, slope fan,slump fan, condensed section and various progradational wedges. The preliminary application show that the general principles of sequence stratigraphy also can be applied to Tertiary continental basins in China provided that proper modification and supplement are made.

应用层序地层学的原理,可以将廊固凹陷的下第三系地层分为沙四段~孔店组、沙三段、沙二段~东营组三个层序。每一层序还可细分出低水期、水进期、高水期沉积体系域以及组成它们的盆底扇、斜坡扇、滑塌扇,缓慢堆积段和各种类型楔状体沉积。初步应用表明,层序地层学一般原理也适用于我国第三系陆相沉积盆地,但在应用中需作适当的修改和补充。

The genetic stratigraphic unit Ⅱ of Jurassic Yan' an Formation in Shenmu district of Ordos Basin consists of three subunits(i. e. subunits A,B and C),which belong to the delta-lacustrine de-positional system. The genetic facies of the system consist in three associations : delta plain association (including distributary channel, abandoned distributary channel, natural levee, overbank deposits, small lake on delta plain,interdistributary bay,crevasse splay,crevasse delta,crevasse channel and swamp),...

The genetic stratigraphic unit Ⅱ of Jurassic Yan' an Formation in Shenmu district of Ordos Basin consists of three subunits(i. e. subunits A,B and C),which belong to the delta-lacustrine de-positional system. The genetic facies of the system consist in three associations : delta plain association (including distributary channel, abandoned distributary channel, natural levee, overbank deposits, small lake on delta plain,interdistributary bay,crevasse splay,crevasse delta,crevasse channel and swamp), delta-front association (including mouth bar, subaqueous distributary channel, subaqueous levee and subaqueous overbank deposits), pro-delta deposits and open lacustrine deposits. The deposi-tional system tract of subunit A consists of four deltaic lobes,that of subunits B,C of three and four deltaic lobes respectively. The main resource area of deltaic lobes distributed along NE-SW,is located in the east part. Each subunit is composed of transgressive event in the early stage,and the deltaic progradation event in the late stage. From subunit A to subunit C,the characteristics of evolution of depositional system are as follows-the smaller the transgressive scale, the stronger the deltaic progradation process and coal-forming. When deltaic lobes were abandoned, the coal-forming began. The best coal-forming realm is the abandoned deltaic plain,the better interdelta bay,no coal in open lake.

本文主要应用沉积体系及层序地层分析的思路和方法,利用大量的野外露头及钻孔资料将侏罗系延安组第Ⅱ成因地层单元解析为3个低级别建造块——A、B和C亚单元;以亚单元为单位,在三维空间内识别了三角洲-湖泊沉积体系的多种成因相及组合,重建了体系域,总结了体系演化的规律性;对聚煤作用进行了成因探讨。

 
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