查询词典 lacustrine

The mudstones from deep lacustrine facies and coal measure show difficult evolution features by hydrous pyrolysis.

深湖泥岩和煤系泥岩形成于不同的沉积环境中，其共同的特征是在埋藏过程中随着温度升高而生成油气。

The biota are mostly preserved in lacustrine deposits bearing a number of volcanic tuffs or interclations of lavas, which provide a window for understanding the interaction and response.

华北克拉通破坏重大地质事件发生响应于全球变化和统一地球表层系统。

Predepositional ichnocoenosis mainly occurred in thin-bedded fine sandstone, siltstone and silty mudstone, belonging to shallow lacustrine deposits under normal climate condition.

沉积前遗迹群落主要产在属于正常天气下浅湖相薄层状粉、细砂岩和粉砂质泥岩沉积中。

We have observed the structure of these dune sands and analyzed the grain-size,surface textural features and several main chemical elements of them,the results showed that:(1) these dune sands have some eolian structure characteristics which are similar to the recent dune sands;(2) they are also similar to the recent dune sands in grain-size components,and parameters of Mz,?滓,Sk and Kg,as well as in several main chemical components;(3) the scatter plots of Mz-?滓,SiO2-Al2O3+TOFE and the probability curves of grain-size showed that these paleo dune sands are different from paleosols and fluvio-lacustrine facies but are consistency with recent dune sands;and(4) the quartz sands have well roundness and some surface textural features such as dish-shape pits,crescent-shape pits,pockmarked pits,upturned cleavage plates,siliceous precipitates and siliceous crevasses,indicating that they had been carried for a long time by the wind.

对这些沙丘砂的沉积构造观察以及粒度、扫描电镜和常量化学元素分析结果表明：(1)这些沙丘砂具有与现代沙丘砂相似的风成沉积构造特征；(2)粒度及其参数--Mz、σ、Sk和Kg，以及主要化学组分SiO2、Al2O3和TOFE也与现代沙丘砂相近；(3)Mz-σ、SiO2-Al2O3+TOFE散点图和概率累积曲线显示这些沙丘砂与萨拉乌苏组中的河湖相、古土壤差别明显，而与现代沙丘砂一致；(4)石英砂颗粒具有良好的磨圆以及碟形坑、新月形坑、麻坑、上翻解理薄片、硅质沉淀和硅质裂纹等表面结构特征，反映其曾受持久的风力搬运作用。

The investigation and study of seismic hazard in frozen soils deposit region by the West of Kunlun mountain pass M 8.1 earthquake in 2001 shows that there is frozen soils distribution in the region, which mainly result from the glacial deposit, alluvial deposits, deluvial deposits, lacustrine deposits, and of which the depth varies greatly along the rupture.

通过对2001年昆仑山口西8.1级地震区冻土震害考察研究表明，震区主要存在冰碛、冲积、洪积和湖积等成因的冻土，沿地震破裂带冻土厚度变化较大。

It introduces the location, profile structure and environmental characteristic of lacustrine sediment and eolian sediment in detail. Stratum chronology is established during the last 5000 years based on radiocarbon, 210Pb and 137Cs dating method.

详细介绍了本研究野外考察获取的湖泊沉积剖面和风沙沉积剖面的地理位置、剖面结构及区域气候环境特征；在14C、210Pb和137Cs测年的基础上建立了近5000年沙地演化的地层年代序列。

This thesis has systematically dealt with the glacial, lake and climatic fluctuations in the areas mentioned above throughout the late stadial of the Last Glaciation, based on synthetical records of glacial development at the high mountains, lacustrine stratigraphy and lake evolution in both the high plateau basins and the lower altitude interior ones, periglacial phenomena and palaeosols as well as microfossils in deposits.

本文则根据大量野外实地考察与室内分析资料，从高原高山区的冰川发育与演化，高原和盆地区的湖相沉积地层、湖泊演变历史和地层中冰缘现象、古土壤的发育状况以及微体古生物等方面的综合记录分析，对青藏高原北部与天山地区以及内陆干旱盆地在末次冰期晚阶段中的冰川、湖泊与气候环境演变状况作了较为系统的探讨。

The heavy hydrocarbons of coal-derived gas associated with fresh lacustrine and marsh have relatively hydrogen light isotope but those related with marine environments have relatively heavy hydrogen isotope.

淡水湖沼相烃源岩生成的煤成气相对富集氢同位素氕，而海相烃源岩生成的煤成气则相对富集氢同位素氘。

Recent discovery of a large natural gas field in the northern slope of Baiyun Depression demonstrates its great resource potential in the huge lacustrine source kitchen in the Eogene of Baiyun Depression.

白云凹陷北坡大型天然气田的发现也证实了白云凹陷下第三系巨厚湖相烃源岩的资源潜力。

About 7 900 years ago the region was invaded by the Tyrrell sea through Hudson Strait;And the sea water covered the James Bay Lowland in a rapid manner following the lacustrine episode.

约7 900年前该地区的侵略的泰瑞尔海上通过哈德森海峡和海水覆盖了詹姆斯湾低地迅速地在下面的湖泊插曲。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。