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- So-called 4th sequence is a system tract practically with no cyclicity. 四级层序就是体系域，不具有旋回性。
- Using logging data, core, and seismic data, we have re-classified the systems tract with the isochronous framework. 3、运用钻测井、岩芯和地震等资料,在等时地层格架中进行了体系域的划分。
- MSC3hightstand systems tract: mainly deposits progradation fan delta frontal subfacies. MSC3高位域沉积时期:主要发育进积型的扇三角洲前缘亚相沉积。
- Each systems tract has its own unique petroleum system attributes, including reservoir, seal, trap, and source potential. 每种体系区块都有其独特的石油体系特征,包括油藏、该曾、圈闭和生油潜力。
- Therefore, hydrocarbon source rocks formed in the early highstand system tract have the best hydrocarbon potential. 因此早期高位体系域中的烃源岩有较好的生烃潜力。
- The sequences may be divided into lowstand systems tract,transgressive systems tract,highstand systems tract and regressive systems tract. 将层序划分为低水位体系域、水进体系域、高水位体系域和水退体系域。
- There are alluvial systems tract, transgressive systems tract, regressive systems tract, and fluvial systems tract in every tectonic sequence. 冲积体系域发育冲积扇、砾质辫状河沉积，分布局限；
- Highstand System Tract mainly develops depositional system of offshore-meare, fluvial facies and prograded delta. 高位体系域主要发育滨浅湖相、河流相及进积型三角洲沉积体系。
- The hydrocarbon reservoirs in the transgressive systems tract consist mainly of braided channel sandstone bodies in the alluvial fan facies,distribut... 但由于它们形成的古环境及物理化学条件的不同,其砂砾岩中所含粘土矿物类型及数量亦有显著差异,对其储集性能将产生不同程度的影响。
- Transgressive system tract were superimposed by retrogradation, and high system tract were superimposed by progradation. 对体系域内部特征的描述表明，海侵体系域为由一系列退积叠置构成，高位体系域则由进积叠置构成。
- The transgressive systems tract of the continental sepquences in the Biyang fault depression as a lacustrine basin is dominated by a retrogradational fan delta. 泌阳断陷湖盆陆相层序水进体系域以退积型扇三角洲为其沉积主体,靠近构造枢纽的陡坡带边缘,冲积扇相域越来越窄,而向盆内则由滨浅湖逐渐过渡为半深湖。
- The oil shale of the third mumber developed in highstand system tract, and its genetic type is of humosapropelic of shallow lacustrine facies. 油三层形成于高水位体系域发育时期，成因类型为浅湖相腐殖-腐泥型油页岩。
- schmooze and booze 喝酒闲聊
- Two third-order sequences were divided in the background of one second-order megasequence, both of which consist of transgressive systems tract and highstand systems tract. 本文在一个二级层序大的背景下将上寒武统划分为两个三级层序，且由海侵体系域（TST）和高水位体系域（HST）组成。
- A model for the Lower Tertiary framework and sequence system tract of Jiyang subbasin was established with the high_resolution sequence stratigraphy. 建立了济阳坳陷下第三系高精度层序地层格架和层序体系域的构成模式。
- The most part of Tahei Uplift had subsided under water at the stages of later Shushanhe and Baxigai, and was overlapped by the highstand system tract at Bashenjiqike stage. 舒善河后期与巴西盖期，塔北隆起大部分已沉降至水下，至巴什基奇克期被同期高水位体系域沉积地层所超覆。
- The four-order sequence of epicontinental sea basin is composed of two units, that is, the Transgressive System Tract (TST) and Highstand System Tract (HST). 陆表海盆地三级层序为海侵体系域高位体系域二个单元组成；
- The two systems of government are polar opposites. 这两种政体正好相反。
- Highstand Systems Tract(HST) which bottom is marked by the emergence of condensed sectionand top is a maximal flooding surfaceformed during the period from the ascent inflexion point(R)to the highest point(H) of lacustrine level change. 高水位体系域形成于湖平面上升拐点R至最高点H时间段，其底以凝缩段出现为界，顶以最大湖泛面为界；
- Based on the study, the ternary texture of epicontinental sequence indicate that they also consist of lowstand systems tract, transgressive systems tract and highstand systems tract. 在此基础上，认为陆表海层序仍然具有“三元”结构，由低位体系域、海侵体系域和高位体系域组成。
