查询词典 authigenic

Quantitative Estimation of paleoaltitude is the objective that geologistes have always sought. The research history of paleohypsometry wh0h uses oxygen and hydrogen isotopic composition of authigenic mineral; overviewed. This method has much more potential to be applied to older periods than Cenozonic.

定量恢复高大地形的古高程是地质学家一直以来追求的目标，将自生矿物中氢氧同位素用作古高程计的历史不长，这种方法还有很大的应用潜力，可用到比新生代更古老的时期。

When palaeoclimate became arid, the content of authigenic carbonate increased, and the proportion of aeolian silty sand in terrigenous clast increased distinctly too.

在高频旋回中，当气候偏干旱时，页岩中的自生碳酸盐含量增加，同时风成粉砂在陆源碎屑中所占的比例也明显升高。

Under scanning electron microscope,barite in these samples occurs as euhedral crystal,co-existing with authigenic quartz and albite with the same idiomorph.Considering the geological setting and c rystal form,it is believed that barite occurred in the study area is compara ble with that found in the Guaymas Basin,Gulf of California,i.e.,with hydrothermal origin.

通过对东太平洋多金属结核中国开辟区表层沉积物和短柱状沉积物的系统观察和分析，首次根据矿物学和地球化学两方面的证据，发现中国开辟区沉积物中热水活动及其产物的存在。X射线衍射分析表明，沉积物样品中普遍含有重晶石，部分样品中含量高达10%以上。

The ore minerals consist mainly of pitchblende UO(superscript x, x=2.16~2.70. The pitchblende is mainly intergrown intimately with diagenetic minerals, parts of which is intergrown with authigenic kaolinite, while another parts of which is intergrown or juxtaposed with pyrite of ore-stage, indicating simultaneous precipitation.

镜下观察结果显示，铀矿物主要为沥青铀矿UO(下标 x， x=2.16~2.70，部分与自生高岭石共生，部分则紧密地与矿化阶段黄铁矿共生或交互生长，表明同时沉淀。

On the basis of isotope Sr variation, integrated with lithologic association, authigenic mineral assemblage, sedimentary structure and paleontologic evidence, the Shenglihe oil shale is classified into two major sedimentary environments such as tidal flat one and lagoon one.

依据Sr同位素的变化特征，并结合例面的岩性组合特征、自生矿物组合、沉积构造以及古生物标志，将胜利河油页岩划分为潮坪和澙湖两种沉积环境。

This paper studys the the interactions between solution of primary minerals ofthe reservoir sandstone, the deposition of authigenic mineral, and the formingmechanism of secondary porosity in Upper Paleozoic reservoirs in Ordos basin withthe modeling theory of Water-Rock Interaction, builds the correspondingthermodynamics database and dissolution experiment database, and provides thecomparable and quotative data for the Water-Rock Interaction modeling research ofreservoir rock.

本论文将水—岩相互作用模拟(即热力学理论模拟计算和溶解模拟实验相互结合的方法)用于鄂尔多斯盆地上古生界碎屑岩骨架组分的溶解、自生矿物的沉淀及其与次生孔隙形成机制之间关系的研究，建立了相应的热力学数据库和溶解实验数据库，为沉积盆地储集岩的水—岩相互作用的模拟研究提供了可对比与借鉴的基础资料。

From the middle to the south in the research area, the compaction, the pressure dissolves the function and the structure disruption intensity enlarges gradually, the silicon nature agglutinates the content to increase gradually, and the corrosion function intensity reduces gradually. The diagenesis stage is carried on according to the division standards of secondary enlargement degree, pellet contact type as well as porosity type, the authigenic mineral characteristic, agglutinates, the diagenesis of Xujiahe formation is thoughted degree to be intense, which already entered the late diagenesis stage A sub-stage.

从研究区中部向南部，压实、压溶作用和构造破裂作用的强度逐渐加大，硅质胶结物含量逐渐增多，溶蚀作用强度逐渐降低；并根据成岩作用类型、自生矿物特征、胶结物的次生加大程度、颗粒接触类型以及孔隙类型等划分标准，对须家河组进行了成岩作用阶段划分，认为研究区须家河组成岩作用程度强烈，已经进入晚成岩作用阶段A亚期。

Based on the study of rock textures and structures, and stable isotopes of dolomite and S isotope of barite interlayers within the cap dolomite outcropped in the Miaohe area in the Three Gorge, it is testified that the stable isotopes show a strong negative excursion, and the isotopes of sulfur show a significant positive excursion, which is similar to the reported data of authigenic barites formed in a modern seafloor gas hydrate environment. Therefore, it can be concluded that the cap dolomite was most likely formed in a special environment under which a huge gas hydrate dissociated with the breakup of "Snow Earth" in later Neoproterozoic.

通过对湖北三峡庙河地区出露的&盖帽&白云岩的野外地质构造、碳－氧稳定同位素和重晶石夹层的硫稳定同位素特征的研究，发现除了明显的碳稳定同位素的负偏移之外，重晶石的硫同位素值表现出明显的正偏移，其数值可与现代海底甲烷喷气孔附近的自生重晶石矿物的同位素组成相对比，进而认为&盖帽&白云岩的成因是末元古代&雪球&事件之后天然气水合物的释放与全球环境突变背景下的沉积产物。

In previous studies, most of the results emphasized the role of microorganism-induced mineralization of calcium phosphate, a taphonomic process known as authigenic mineralization. In their results, the calcium phosphates only mineralized outside the cells but never found inside the cells.

从实验的结果来看，磷酸钙仅沈积於细胞膜外，但在化石纪录中我们甚至可以看到细胞核、叶绿体等构造被沈积的磷酸钙矿化保存下来。

Marine gas seepage not only influences the physical properties of the seafloor sediments, but also significantly alters the geomorphology of the seafloor, such as the occurrence of pockmarks, mud volcanoes, authigenic carbonate and cold seep communities on seafloor.

海底天然气渗漏可以指示沉积层中的烃类聚集带，渗漏出的大量气体可能影响全球的气候变化，此外，与海底渗漏相关的浅层气改变了海底沉积物的土工性质，可能对海底工程构成威胁。

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