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1.
0 引言 西藏罗布莎铬铁矿矿物学研究首先是由1981年在罗布莎和东巧两个地幔橄榄岩中发现了金刚石而引发的.1996~2004年,在地矿部地调局和加拿大NSERC资助下开展了"西藏超高压矿物群"的课题研究.  相似文献   

2.
广西这片英雄的土地素来豪杰并起、英才辈出,明代有抗倭巾帽瓦氏夫人,晚清有抗法勇士冯子材;近代有东兰革命武装早期领导人韦拔群,抗日名将李宗仁;和平年代有农民的好榜样韦江歌,人民的好检察官陈革。如今,先辈们曾经洒过热血、滴过汗水的神奇土地上又出现一位壮族楷模、八桂骄子,  相似文献   

3.
前童镇位于浙江省宁海西南,始建于南宋绍定六年(公元1233年)。江南的小镇,宁静的美丽中叙说着历史的沧桑。悠久的历史、深厚的文化积淀和独特的地理环境造就了前童古镇独特的气息,因而前童被称之为“浙江省历史文化名镇”、“浙江省旅游城镇”和“中国历史文化名镇”。〈br〉 前童,是一个不凡的江南明清时期的民居原版,是一幅古韵浓重的乡村画,更是一段优美动人的江南丝竹小调。它以民居布局奇特、明清古建筑群保存完好及人才辈出而闻名遐迩。  相似文献   

4.
根据本区的地形、水文,地质及水文地质特点,按河网化的需要,概可划分为以下几区: 工 区 本区范围位于调查区之南部,标高一般在200—800米之间。地形崎岖,割切强烈,冲沟甚为发育,割切深度一般为10一30M,冲沟长度为500—1000米,长者可达3000—5000M。坡角为20—70°。这些沟谷相互啣接,构成间歇河流。因岩性分布不均,风化强度不一,故在河流间常形成一些袋状地形,如管帅,后泥牛等皆是。这些冲沟与河流构成北部各大河  相似文献   

5.
陈汉江 《河南地质》2013,(11):54-55
公元二零一三年的春天与以往不同,一个名词“中国梦”飞速走红! 它旋即进入了中国高层的思维和决策也迅速飞进了每个中国人的脑海与心中!  相似文献   

6.
赵振元 《中国勘察设计》2009,(1):F0002-F0002
在国家住房和城乡建设主管部门的领导下.尤其是在市场管理主管司有关领导的亲切关怀下,我院通过历届领导班子的努力.尤其是通过改制以后的快速成长,获得了工程设计综合甲级证书,揭开了十一院发展历史崭新的一页。我院与兄弟大院相比仍有差距.要继续按照国家住房和城乡建设主管部门的要求,努力将我院发展成为一个国际工程公司型的大院。  相似文献   

7.
冯增昭 《古地理学报》2020,22(2):207-220
近年来,在《古地理学报》(中文版和英文版)的已刊文章和来稿中,一些作者把岩石或岩石类型称作“微相”或“岩相”,把岩石薄片中的微观特征称作“微相”,把岩石的宏观特征称作“宏观相”。笔者曾写过2篇中文的短文《主编的话——岩石不是微相》和《主编的话——岩石不是岩相》,刊于《古地理学报》(中文版)中。但是此二文尚未引起国内外广大读者的关注。还有,在20世纪80年代,一些中国沉积学家根据野外露头和钻井岩心的岩石宏观特征,提出了“亚相”和“微相”。这个“微相”的定义与外国沉积学家在20世纪40年代根据岩石的显微镜下微观特征提出的“微相”的定义完全不同。这些问题屡屡出现从而迫使笔者,作为《古地理学报》(中文版和英文版)的主编,应该遵循“百花齐放和百家争鸣”的方针,再写出1篇中文及英文兼有的新文章,即《沉积相的一些术语定义的评论》(A review on the definitions of terms of sedimentary facies),把沉积相的一些术语,如“相”、“沉积相”、“岩相”、两种“微相”、“宏观相”、“亚相”等术语的定义讲清楚,并把此文同时在《古地理学报》(中文版和英文版)中刊出。希此文能引起国内外广大读者的关注,并撰写文章和参与这些问题讨论及争鸣,争取逐步得到一些共识,从而促进沉积学和古地理学的进步与发展。  相似文献   

8.
<正>当前,"智慧"成为热门词汇,从智慧城市到智慧建筑、智慧施工,都日渐成为行业关注的热点。智慧建筑应该是什么样的建筑?我们认为,智慧的建筑应该是以人为本的建筑。智慧建筑"以人为本"建筑是能耗和碳排放的大户。根据《"十二五"绿色建筑科技发展专项规划》,在全社会的能耗和碳排放中,建筑业占比超过40%,远超工业的28%和交通运输的32%。目前,中国建筑95%以上是高能耗建  相似文献   

9.
我对李荣江同志的先进事迹,最初是从新闻媒体上获悉的,即《中国国土资源报》刊出的《走进百姓心中的国土人——记浙江省台州市国土资源局派出农村工作指导员李荣江》,与此同时,又在网上浏览了许多有关学习宣传李荣江先事迹的专题报导,而后又视频收看了省国土厅在杭举行的李荣江先进事迹电视电话报告会实况。学习李荣江事迹,我心情倍加激动,他在平凡的岗位做出了不平凡的业绩,为国土系统争得了荣誉,是国土人学习的楷模。  相似文献   

10.
约距今2200万年的新近纪中新世早期,菲律宾洋板块斜向俯冲插入欧亚陆板块之下,在板块碰接带的两侧进行不同的地质演化。海沟、火山岛弧、弧后盆地是板块构造理论中洋板块与陆板块碰接时在碰接带附近产生的构造地貌,即“沟、弧、盆系”。菲律宾洋板块俯冲于欧亚陆板块之下到更新世后期(距今约20万年),其构造地貌由洋到陆为大洋-硫球海沟-台湾火山岛弧-弧后盆(边缘海)-中国大陆,其中海沟以东至大陆为东海大陆架。  相似文献   

11.
International unity is becoming ever stronger in this country owing to an increasing similarity in the development of the cultural environment. This comprises the provision of all the country's republics with a sufficient number of schools, theatres, and other institutions and cultural information media in accordance with the needs of the population. An important part is played by the rise in ‘the general educational level, as well as the level of professional qualifications and skills. Among all the Soviet nations and nationalities, this rise being more rapid among formerly backward peoples. Prominent among the factors of internationalization is the progressive development of the nationalities’ cultural resources, while professional culture is being increasingly brought within the reach of the masses.The implementation of the nationalities policy promotes the all-round development of all Soviet nations and nationalities, their drawing together, the upsurge of the individual capabilities of every Soviet citizen.  相似文献   

12.
The Global Stratotype Section and Point (GSSP) for the base of the Silurian System was defined in 1985. Since that time, a number of researchers have suggested that this section has serious deficiencies for use as a GSSP. As a result, in 2000, the Subcommission on Silurian Stratigraphy (SSS) proposed undertaking a formal restu@ of this GSSP, which was subsequently approved by the International Commission of Stratigraphy (ICS). The result of this restudy was the formal proposal that the current GSSP, at 1.6 m above the base of the Birkhill Shale, at Dob's Linn, Scotland, should be maintained as the same locality and stratigraphic level, but the bios- tratigraphical definition of the boundary should be revised. The previously defined, basal Silurian grapto- lite zone, the Parakidograptus acuminatus Zone, should be subdivided into a lower Akidograptus ascensus Zone and a higher E acuminatus Zone. The base of the A. ascensus Zone, marked by the first appearance of A. ascensus, should be regarded as the biostratigraphic mark for the base of the Silurian. This proposal has now been formally approved by the SSS and ICS, and ratified by International Union of Geological Sciences. This is the first GSSP to undergo formal restudy and redefini- tion, and the proposal also included a recommended procedure for restudy of GSSPs.  相似文献   

13.
It is known from observations that the center of mass of the Moon does not coincide with the geometric center of its figure, and the line connecting these two centers is not aligned with the direction toward the center of the Earth, instead deviating toward the Southeast. This stationary deviation of the axis of the inertia ellipsoid of the Moon to the South of the direction toward the Earth is analyzed. A system of five linear differential equations describing the physical libration of the Moon in latitude is considered, and these equations are derived using a new vector method taking into account perturbations from the Earth and partly from the Sun. The characteristic equation of this system is obtained, and all five oscillation frequencies are found. Special attention is paid to the fifth (zero) frequency, for which the solution of the latitude libration equations are stationary and represents a previously unknown additional motion of the rotational axis of theMoon in a cone with a small opening angle. In contrast to the astronomical precession of the Earth, the rotation of the angular-velocity vector is in the positive direction (counter-clockwise), with the period T 3 = 27.32 days. On this basis, this phenomenon has been named “quasi-precession.” This quasi-precession leads to a stationary inclination of the major axis of the inertia ellipsoid of theMoon to the South (for an observer on Earth), making it possible to explain one component of the observed deviation of the center of mass of the Moon from the direction toward the Earth. The opening angle of the quasiprecession cone is approximately 0.834″.  相似文献   

14.
东濮凹陷北部沙三中亚段广泛发育盐岩和烃源岩,这两个看似不能共存的物质却在这里互层共生。该时期研究区沉积特征为多盐韵律与多层烃源岩互层共生、连续沉积,单个盐韵律厚度从几米到十几米,烃源岩有机质丰度高、类型好。平面上,两者在湖盆沉积沉降中心共生;垂向上,高有机质丰度、好干酪根类型与高盐度地层具有较好的对应关系。因而成为恢复古气候和古环境的重要研究对象。通过岩石学、古生物学以及Sr/Ba、B/Ga、(V+Ni+Mn)、Fe/Mn、Sr/Cu、Mg/Ca、V/(V+Ni)、稀土元素含量和氯同位素等方法对凹陷北部沙三中亚段的沉积环境进行研究。结果表明,凹陷北部沙三中亚段为深水沉积的还原环境,古盐度较高,达到半咸水-咸水沉积;微量元素和孢粉化石特征表明研究区沙三中亚段为温暖潮湿的环境。  相似文献   

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17.
Important tendencies in development of the world mineral-resources sector at the beginning of the 21st century were an increase in production and consumption of mineral materials differentiated by types of metals and nonmetallic mineral raw materials, by countries and regions, as well as the concentration of the production of mineral raw materials in a small number of countries, and a reduction in industrial reserves of minerals in the world economy, even at the current stage of their extraction. These tendencies should be taken into account in working out a strategy for development of the Russian mineral raw-material base.  相似文献   

18.
Taking the example of W Sudan, an analysis of the climatic incidents leading to the two recent famine disasters is made. On this natural background, the human side is investigated. Focus is directed towards the fragile economic structure of the famine-prone population groups. An early-warning system for famine in the Sahelian Zone is proposed taking grain production and storage, livestock development and the relationship between the prices of livestock and grain as major indicators.  相似文献   

19.
郯庐断裂南段研究进展与断裂性质讨论   总被引:13,自引:3,他引:13  
据1:5万区域地质调查和专题研究资料,就郯庐断裂带是否南延与消失的原因,其与大别—苏鲁造山带交截形成的假位错效应,以及与中新生代沉积盆地形成演化的关系等作了新的阐述。在此基础上,讨论了郯庐断裂带是否为巨大的左行平移断层或转换断层。认为郯庐断裂带可能是在“古郯庐带”的基础上于早侏罗世重新活动、白垩纪强烈活动的地堑型枢纽断裂带。  相似文献   

20.
In order to characterise the influence of the heavyrains on the observed landslides during the 1996–1997hydrological cycle, rainfall records for the last 100years are analysed from 104 stations in easternAndalusia. Regarding the amounts of rain recordedbetween October 1996 and March 1997 in the 104stations studied, 31 presented new all-time records;15 presented values that were 80–100% of thepre-1995 record; 49 stations, 80–50%; and 9stations, < 50%. A map has been devised of thesusceptibility of the materials through which thesouth-eastern Andalusian road network crosses,together with an inventory of the damage caused byinstability phenomena on banks and cuttings of theroad network during the winter of 1996–1997. Therelationships between the rainfall during the studyperiod, the damage caused to the road network and thesusceptibility of the materials affected are analysed.The results indicate that there is a clearcorrespondence between the rainfall recorded and thesusceptibility of the materials with the inventorieddamage. It is concluded that the widespread seriousdamage caused in early 1997 to the roads andsurrounding areas in the Alpujarra region and thecoast of the Province of Granada was mainly caused bythe extraordinarily heavy rains. However, considerablyless damage was observed where the susceptibility ofthe terrain is low, thus highlighting the extremeusefulness of terrain-susceptibility maps for riskprevention and territorial planning.  相似文献   

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