查询词典 geological

In this paper, though the field geological investigations, and studies of element-isotope geochemistry, mineralogy and the geo-chronology, combining with the regional geotectonic analysis, the geochemical characteristics and petrogenesis of the mafic dikes from the coastal areas of Guangdong Province and Hainan Island are discussed, mafic magma episodes and mantle characteristics are analyzed, and the relationships between mafic magmatism and lithosphere evolution are studied.

本论文通过野外地质调查和一系列配套的岩石化学、微量元素、同位素地球化学、矿物学及年代学方法，结合区域地质构造分析，对广东沿海地区及海南岛基性岩脉的地球化学特征、成因、基性岩浆活动期次、地幔源区地球化学特征，以及岩石圈结构特征、形成机理和演化等进行了探索性的研究，得出以下几点认识： 1。

Here we report the detailed petrography and mineralogy of this new lunar meteorite with the hope to better understand of the geological processes on the Moon and the chemical composition of the lunar crust.

本文报道了Dhofar 1180的岩相学和矿物化学特征。

1 State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences, Beijing 100083, China; 2 Division of Petrology and Mineralogy, China University of Geosciences, Beijing 100083, China

作者单位： 1 中国地质大学地质过程与矿产资源国家重点实验室，北京100083；2 中国地质大学岩石矿物教研室，北京100083

Geological structure, terrain, quaternary glacier and from some sides, such as growth degree of petrosal Subsequently, the author analyzes precipitation trend and change period.

最后，作者分析了九寨沟景区的降水变化趋势和周期变化、生态环境的改变状态。

Supported by the project of "1:250000 regional geological survey of Yinchuan map and Jilantai map ", we obtained more understanding from field and also fundamental data to focus on the tectonic framework and evolution of Helan mountain in phanerozoic period.

贺兰山地区地处我国北方东、西部不同大地构造单元的枢纽地区，是我国北方构造、地貌以及各种地球物理的分界带，也是我国逆冲推覆构造较为发育的地区之一。

The present results can be used to quantitatively determine the history of water-rock exchange and to serve geological thermometry for various igneous rocks (especially extrusive rocks containing phenocryst).

本文的结果可用于定量确定水—岩交换历史以及各种岩浆岩的氧同位素地质测温。

Base on above studies, some conclusions were obtained as follows:(1) ore-forming background of the studied ferromanganese crusts are mainly controlled by intensity of Antarctic Bottom Waters and variations of material source;(2) it is confirmed that the ferromanganese crusts are mainly hydrogenetic and their composition are affected by volcanic and continental material simultaneously; there are no obvious phosphatization reconstruction and element reaction occurred in them, so they have important paleoceanological significance;(3) from researches on element occurrence modes in the new-type ferromanganese crusts and the lying sediments, it is proposed that there is no great biological affection on the crusts formation and their composition mainly came from the adsorptive action of the ferromanganese oxides in them;(4) two major types of ore-controlling factors are identified through compilation of ore-controlling factors, which are geological and oceanic factors;(5) considering the long-term variation trends of the crusts composition, combing the U-series and 10Be isotope dating results, it is proposed that the ore-forming processes of ferromanganese crusts in the studied areas can be divided into three major stages (5.6~2.8 Ma, 2.8~2.7 Ma and since 2.7 Ma), and then the activities of AABW since the Late Miocene, changes of input flux coming from volcanic and continental material are confirmed.

通过研究，得出如下结论：(1)研究区铁锰结壳的成矿背景主要受控于南极底流强弱及物源供给的变化；(2)证实铁锰结壳主要为水成成因，同时其物质组成也受一定程度的火山和陆源物质的影响；结壳自形成以来没有遭受到明显的磷酸盐化等成岩后期改造和元素再迁移，具有重要的古海洋学意义；(3)通过新型铁锰结壳及下伏沉积物元素赋存状态的研究，认为生物作用对研究区结壳的形成并没有很大的直接影响，其物质成分主要来自于结壳中铁锰氧化物的吸附作用；(4)在控矿要素的研究中，归纳出了地质与海洋两大类结壳控矿要素；(5)根据结壳成分长周期变化趋势，结合铀系和10Be测年结果，将研究区结壳的形成过程划分为三个主要阶段(5.6~2.8 Ma，2.8~2.7 Ma和2.7 Ma以来)，并确定了晚中新世以来研究区南极底流的活动情况、火山和大陆来源物质输入量的变化。

Located in the adjacent area of Shanxi, Gansu and Sichuan provinces,the Yangshan gold deposit is a superlarge-scale gold deposit in Devonian epimetamorphosed phyllite or limestone,which is found by gold geological party of CAPF in recent years.

甘肃文县的阳山金矿床是武警黄金部队近年来在陕甘川交界地带发现的一个产于泥盆系浅变质岩系的特大型金矿床，勘查后求得储量已达227 t之巨。

It has been shown that the three basic conditions: geological condition, physiographic factor and the source of water, are mainly caused by ecology environments and human

第四部分为研究区的"三农"问题，对研究区的"三农"问题现状及其影响因素进行了分析。

On basis of analysis of geological characteristics of compressional basins in the world,the concept and theory of piedmont and piedmont hydrocarbon accumulation was proposed.

在分析了国内外压性盆地油气地质规律的基础上，提出了"山前"和"山前油气富集成藏"的概念及理论认识。

The use of the web to spread fears that flicking the switch on the LHC could create a Black Hole that could swallow up the Earth particularly concerned him, he said.

他说，使用互联网散布恐慌说启动LHC会生成一个可能吞噬地球的黑洞的做法让他感到忧虑。

Not a single word have I written down.

我一个字也没有写下来。