| 1. | Magnetostratigraphic study of lake sediments in jiaochang , maoxian county , sichuan 四川茂县较场湖相沉积磁性地层初步研究 |
| 2. | Un - compensating lacustrine deposition , which is multi - resources , is dominated in the depression 凹陷以非补偿的湖相沉积为主,具有多源性。 |
| 3. | Much of the oil and gas resources reside in lake basins in the world including china 世界上很大一部分油气资源赋存于湖相沉积盆地中,特别是我国具有陆相湖盆成油的显著特点。 |
| 4. | This paper focuses on recognizing the stratigraphic cycles caused by multi - order base - level cycles , establishing the stratigraphic correlation framework and predicting the lithological traps of the third section of shahejie formation , linnan sub - depression 临南洼陷位于惠民凹陷西南部,是发育在华北地台之上的中、新生代裂谷盆地,为湖相沉积。 |
| 5. | For the high - class highways builded on the area of lacustrine deposits soft soil , because earth fill of subgrade is very high and construction period is very short , the controlling of subgrade stability and settlement are the two key techniques 对于通过湖相沉积软土地区的高等级公路,当路基填土较高、工期较短时,必须解决地基稳定性控制及沉降控制两个关键技术问题。 |
| 6. | Thus it became well - known for frequent geologic - disaster and landslide in the stratum area . xigeda soft rock is made up from minute sandstone , mud siltstone , siltstone mud and mudstone . it is inland fluviolacustrine phase deposit rock with rhythm - cyclic character of depositional geology 昔格达组极软岩属内陆静水河湖相沉积,主要由粉细砂岩、泥质粉砂岩、粉砂质泥岩和泥岩组成,具有明显的沉积韵律特征。 |
| 7. | Studies of the petrology , textures and structures , depositional environment , contained fossils and age of the fluvial - lacustrine deposits indicate that they are the earliest record of the epiglacial area of the quaternary glacial period , representing the lower boundary of the quaternary glacial period 对该河湖相沉积的岩石、结构构造、沉积环境、所含化石特徵和形成时代等的研究表明,它是第四纪冰期冰缘区的最早沉积记录,也是第四纪冰期的下限。 |
| 8. | ( 5 ) by analyzing the terrace in the lacustrine sediment of the ancient barrier lake , diexi , minjiang river , forming of the terrace is not only because of the intermittent arising of the tectonic movement , but also because of descend of the eroding normal covering resulting from destroying of the barrier lake ( 5 )通过对岷江叠溪古堰塞湖湖相沉积中的河流阶地分析可知,阶地的形成不仅仅是由于新构造运动的间歇性抬升作用,由于堰塞湖的溃决引起洪水下泄,导致河流侵蚀基准面的下降也可以形成阶地。 |
| 9. | Terrestrial sediments consist mainly of fluvial and lacustrine facies have the following characteristics : lacustrine basins have undergone a long continuous and fast subsidence and contain many terrestrial source rock sequences ; sedimentary facies of terrestrial basins are deposited in a ring formation . the best source beds are the continental source beds which contain dark shale 陆相沉积以河流湖泊相为主,其基本特征有:长期快速沉降的湖相沉积盆地是陆相生油的发育区;陆相湖盆的沉积相带大都是环状分布,暗色泥岩是最佳生油层。 |
| 10. | At the beginning of tiaohu period , the lake basin shrank , and the water became shallow . braided river facies and braided delta facies were found on both side of the basin , and deep lake facies disappeared , and shallow lake facies was only found in the southern of tiaohu seg and central part of malang seg 从中二叠世条湖期开始,湖盆发生萎缩,水体变浅,盆地南北两侧出现辫状河及辫状河三角洲相沉积,半深湖相消失,仅在条湖凹陷南缘及马朗凹陷中部残余滨浅湖相沉积。 |