低水位体系域

塔北塔中盆地三叠系&侏罗系的有利储集相带与中周期低水位体系域关系密切。

The best reservoir facies zones of the Triassic Jurassic strata in the North Central Tarim Basin are closely related to the lowstand systems tract of the medium period cycles .

其中层序3二分为湖侵和湖退体系域，其它层序三分，划分为低水位体系域、湖侵体系域和高水位体系域。

Sequence three can subdivided into transgressive and regressive systems tract . Other third-order sequence can be subdivided into lowstand systems tract , transgressive systems tract and highstand systems tract .

低水位体系域碳、氧同位素组成变化剧烈，且均为负值。

The change of carbon-oxygen isotope composition is very big and negative number in lowstand system tracts .

低水位体系域在地质学上的意义&以赣西北地区为例

The significance of low water level domain in geology : taking the Northwest Jiangxi area as an example

评价结果表明，Ⅰ类储层以分流河道为主，在低水位体系域较为发育；

The evaluation result shows that type ⅰ reservoir is dominated by branch channel which is developing in lowstand systems tract ;

把下白垩统划分为1个三级层序和低水位体系域、湖侵体系域、高水位体系域。

The Lower Cretaceous is divided into 1 sequence and lowstand system tract , transgressive system tract as well as highstand system tract .

淮南煤田二叠系三级层序内部具有明显的三分性，即一个三级层序由底部的低水位体系域、中部的水进体系域和上部的高水位体系域构成。

Study shows that the internal architecture of the third order sequences in the study area is composed of the lowstand , transgressive and highstand systems tracts .

厘定追踪该界面并寻找该界面之上的低水位体系域和水进体系域的三角洲分流河道砂体是勘探的关键。

Hence , tracing this boundary and searching for the delta distributary channel sands in LST and TST will be the key for petroleum exploration in this area .

陆相层序地层学的一个主要内容是将三级层序划分为低水位体系域、湖进体系域和高水位体系域等三个水位域沉积体系，分别代表着一个湖盆沉积的三个阶段。

One of the main contents of continental sequence stratigraphy is dividing the three-order se-quence into LST , TST and HST , representing three stages of a lake basin deposition .

研究结果表明，冲积河流相地层的体系域划分具有4分性特征，即主要发育有低水位体系域、扩张体系域、高水位体系域，当基准面缓慢下降时，还可发育收缩体系域。

The results show that there are four types of system tracts in alluvial-fluvial facies including low system tract , extension system tract , high system tract , contracting system tract .

低水位体系域形成的低水位扇和低水位楔，以及高水位体系域形成的扇三角洲砂体为油气的主要储层。

The low stand fan caused by the low stand systems tracts and the fan delta sand body caused by the high stand systems tracts are the main oil and gas reservoirs .

根据沉积相演变和海平面变化历史，钱塘江下切河谷经历了深切、充填和埋藏三个阶段，形成一个由低水位体系域到高水位体系域的地层旋回。

The development of Qiantang River incised valley underwent three stages : deep-cutting , filling , and burial stage , forming a stratigraphic cycles from lowstand system tract to stable highstand system tract .

储集岩往往是成熟烃源岩之上层序的低水位体系域或紧邻成熟烃源岩的高水位体系域；

The main reservoir rocks are always located in the lows-standing systems tract of a sequence above the effective hydrocarbon source rocks or in the high-standing systems tract immediately above the effective hydrocarbon source rock .

陆表海充填沉积的三级层序为二元结构，即下部为海侵体系域，上部为高水位体系域，缺少低水位体系域。

The third-order sequence of sediment filling in epicontinental sea is of dualistic structure , that is , the lower part is transgressive system tract and the upper high stand tract , lacking low stand tract .

滇池&生态水系、人文水际、效益水体低水位体系域和高水位体系域水体较浅，沉积较粗，而湖进水位域则水体较深，沉积较细。

Lake Dianchi : An Ecological Water System , A Cultural Waterscape , and A Productive Water Body Water body is shallow and sediments are coarse in LST and HST , but in TST , being deep and fine .

下切谷具有典型的几何特征，因此它既可以作为低水位体系域时期沉积物运移的主要通道，又可以作为低水位体系域晚期碎屑沉积物堆积的主要场所。

The entrenched valley has typical geometry characteristics . Therefore , it can be not only the main migration channel for sediments during lowstand , but also the main place to accumulate clastic sediments at late period during low-stand .

分析了陆相可容空间的主要控制因素及其对层序发育的影响，研究表明陆相层序主要发育低水位体系域、湖泊扩张体系域和湖泊收缩体系域。

The main controlling factors of the terrestrial containable space and their effect on the sequence evolution were analyzed . Study shows that terrestrial sequences develop mainly lowstand system tract , lake expand system tract and lake shrink system tract .

盆地相区的低水位沉积体系域和海侵沉积体系域较发育，而高水位沉积体系域不发育；

In basin facies area , lowstand and transgression depositional system tracts occur quite widely , but highstand depositional system tract does not .

每个层序又包括高水位、湖侵和低水位三个体系域。

Every sequence was comprised by lowstand , transgressive and highstand systen tracts .

低水位背景下Ⅲ级层序湖侵体系域聚煤作用较差，Ⅲ级层序低水位与高水位体系域聚煤作用最差。

In addition , the effect of collect coal which is transgressive system tract of the ⅲ class sequences about the background of lowstand system tract is less inferior , moreover the lowstand system tract and highstand system tract of ⅲ class sequence are most inferior .