地层学

Based on the analysis of core samples from the hole of Zk23 in the East China Sea Continental Shelf and by means of sedimentary stratigraphy, biostratigraphy and chronostratigraphy, thes consider that the fine-sand deposition in borehole was part of buried ancient estuary sand ridges of the Yangtze River.

根据东海陆架 Zk23孔岩心分析资料，进行了沉积地层学、生物地层学和年代地层学分析，确定了该钻孔中段细砂层为埋藏古长江河口沙脊沉积，阐明了该孔附近海区冰消期前后和冰后期的沉积历史。

Based on the theory of Sequence Stratigraphy and the systematically analysis of strata which was closely focused on Lithostratigraphy, Biostratigraphy, Paleoecology Event Stratigraphy and Sequence Stratigraphy, four long-term base-level cycles can be recognized in the Mesozoic, each long-term base-level cycles can be further divided into intermediate-term to short-term base-level cycle. Eight intermediate-term base-level cycles are recognized in Mesozoic; Cenozoic can be divided into two structural base-level cycles, and can be further divided into seven long-term baselevel cycles.

应用层序地层学理论，在详细的岩石地层、生物地层、生态地层、事件地层和层序地层为核心的综合地层研究基础上，将中生界划分为四个长期基准面旋回，每个长期基准面旋回内部又可进一步识别出更次一级的旋回，侏罗系内部共可识别出8个次级旋回；根据钻井层序地层与地震地层划分结果，将北缘地区新生界划分为两个构造基准面旋回，其内部又可进一步划分为7个长期基准面旋回。

Based on the PTB study situation of the studied area, two terrestrial sections and one marine-terrestrial section were chosen for the sedimentary and sequence stratigraphy study. The former are Chahe section and Zhejue section in Weining, Guizhou, and the latter is Mide section in Xuanwei, Yunnan. The definition and correlation of the TPTB were discussed based on the results of biostratigraphy, isotope stratigraphy, geochemostratigraphy, and molecule stratigraphy. Thus, it supplied a perfect base for the establishment of the TAGSSP in the area.

针对研究区二叠系—三叠系界线剖面研究现状，选择了二条陆相剖面，既贵州威宁岔河剖面和哲觉剖面，一条海、陆交互相剖面即云南宣威密德剖面，开展了有关沉积学和层序地层学方面的研究，并结合生物地层、同位素地层、地球化学地层和分子地层等资料探讨了研究区二叠系—三叠系界线的划分与对比方案，从而为在该区争取建立陆相二叠—三叠系辅助层型剖面和点打下了良好基础。

Each of the other third-order sequences can be further divided into three system tracts. Based on the identification and correlation of sequence stratigraphic units, and researches on the history of structural evolution, the thickness of sequences and the paleotopography of the area, we proposed the sequence stratigraphical mode of the studied area, and discussed the relations between the sequence stratigraphic model and the oil-gas potentials and estimated the oil-gas potentials of each of the third-order sequences.

针对研究区目的层段所划层序发育的特点，在层序地层单元划分和对比的基础上，结合构造发育史和地层厚度的变化反映出古地形特征，建立了该区的层序地层学模式，并初步探讨了层序地层学模式与含油气性的关系，对各三级层序的含油性做出了初步预测。

As a branch of stratigraphy, sequence stratigraphy was established on the basis of seismic stratig...

层序地层学作为地层学的一个分支学科，是在地震地层学的基础上，根据北美海相被动大陆边缘盆地的研究成果而发展起来的。

This illustrated online guide from the University of Georgia Stratigraphy Laboratory is primarily aimed at the application of sequence stratigraphy to outcrops. It covers: accommodation space; parasequences; progradational, aggradational, and retrogradational stacking; depositional sequences; surfaces; type 1 and type 2 sequences; application to outcrops; chronostratigraphy; and carbonate sequence stratigraphy.

这个有插图的在线指南是由美国乔治亚州大学地层学实验室创建的，主要是为了将地层次序应用于裸露出地面的岩层，内容包括：调节空间，副次序，延伸、沉积、退化叠加，沉积次序，表面，类型1与类型2的次序，裸露出地面的岩层的应用，年代地层学，碳酸盐地层次序。

Since Tertiary, the global eustatic level kept falling while transgression in the SCS remained expanding, indicating that local sea-floor spreading and subsidence acted as a leading role in the study area.

本文根据南海东部石油公司提供的钻井岩芯和地震剖面资料，作了岩石地层学、层序地层学和地震地层学分析，识别出东沙、西沙和南沙的淹没事件。

The expense needed is very small, especially for the barren beds and those long-term controversial beds by using the stratigraphic and paleontologic methods for study, division, and correlation.

尤其是对哑地层和用古生物地层学方法，研究划分和对比，长期存在争议的地层，用等时标志层及其核测井资料，进行微细高分辨岩层对比，解决上述问题，指导地质调查和地层学研究。

On the basis of the basic principles of sequence stratigraphy,the formation of cyclical sedimentary stratum is driven by eustasy which is periodic,and by analysing the seismic,well log and nano-microfossil data of Pearl River Mouth Basin,an integrated study was conducted which is on the sequence stratigraphy of lower and middle Miocene stratum within and around Kaiping Sag .

以层序地层学基本原理——周期性海平面升降控制旋回性地层沉积——为指导，根据地震、测井和古生物资料，对珠江口盆地开平凹陷及其围区的早中新世—中中新世地层进行系统的层序地层分析，认识到该区的层序地层学特点取决于其特殊的古地理位置。

Strontium isotope stratigraphy relies on the fundamental principle that the marine strontium is isotopically homogenous world-wide at any time and the 87Sr/86Sr ratio of strontium in seawater of geological history has varied through time. By means of the 87Sr/86Sr ratio of marine carbonate which should record the original composition of sea water, we can date the marine sediments, research global events, such as history of basin subside, sea level change, orogenic events and palaeoclimate variation.

锶同位素地层学根据地质历史中的任何时间全球范围内海水的德同位素组成都是均一的、海水87Sr/86Sr比值随时间变化这一基本原理，利用代表原始海水的海相碳酸盐的87Sr/86Sr比值确定海相地层的年代，研究海平面变化、造山运动、古气候等全球事件，在地层学、沉积学、石油地质学和矿床学等领域中有着广泛的应用前景。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失