《吉林省汪清县闹枝、刺猬沟金矿床》通过技术鉴定

吉林省地质矿产局于1992年4月20日在长春聘请长春地质学院和吉林省地矿局的有关专家,对长春地质学院和吉林省地矿局第六地质调查所共同完成的《吉林省汪清县闹枝、刺猬沟金矿床》科研报告进行了技术鉴定。该研究课题以金矿床的最新成矿理论为指导,运用构造地质学、矿物学、岩石学、地球化学、遥感地质和地球物理等多学科联合攻关,以大量的实际材料和数据,对闹枝和刺猬沟金矿床的矿床特征和成矿条     

《吉林省区域矿产总结》通过评审验收

《吉林省区域矿产总结》于1987年12月中旬在长春通过评审验收。这是吉林省地矿局区域地质矿产调查所继《吉林省区域地质志》之后完成的又一项重要科研成果。来自地质矿产部、兄弟省地矿局、长春地质学院和吉林省地矿局所属地质部门的四十名专家、教授、学者应邀参加了这次会议。吉林省地质矿产凋查历史悠久,但迄今与止尚无一套完整的区域矿产专著。《吉林省区域矿产总结》是在一比二十万区域地质调查和广泛搜集、查阅国内外有关资料的基础上,经过六年的归纳整理、综合研究编制而成的。     

吉林省敦化盆地下第三系含煤地层的发现及其地质意义

敦化盆地位于吉林省敦化市境内,受北东向敦化～密山深大断裂带控制。该盆地总面积约680km~2,其中由钻探控制面积240km~2,为吉林省东部山区的第三纪沉积盆地(见图1)。 1983年至1986年间,吉林省地质矿产局第六地质调查所,在开展“吉林省敦化地区玄武岩盖     

吉林省浮石矿勘探又获新成果

吉林省地质局第六地质调查所,根据工业发展对轻骨料及轻骨料混凝土生产的需要,受和龙县建委的委托,于一九八二年仅用一个月时间在和龙县西南部赤峰地区,勘探一处天然轻骨料矿产资源——浮石矿床。同年十二月提交了勘探地质报告,提交储量358×10~4m~3。为发展地方建材事业做出贡献。吉林省矿产储量委员会于今年三月组织的报告评审会议认为,该浮石矿床的地质特征、规模、产状及分布规律已查清;各级储量分布合理;工作程度符合《非金属矿床地质勘探规范总则》要求:储     

吉林省区调三十年主要成果记述

自1958年建局以来,吉林省区域地质矿产调查队伍由数十人发展到数百人,由几类专业人材扩大到十多类专业人才,区调任务由比例尺1/20万向1/5万及野外地质专题调查的方向转变.除区域地质矿产调查所一支专业队伍外,于1972年后,相继在原白城地质大队,现今的局属第四、六、二、三地质调查所组建了1/5万区域地质调查分队.30年来,国家投资     

实行承包责任制 增强地质队活力

吉林省地矿局第四地质调查所第二地质调查队试行了地质工作项目阶段承包,效果很好,不但提前五个多月完成了工作任务,而且勘探水平也有提高.     

吉林省延边地区(槽区)花岗岩成因系列及其成矿作用通过鉴定

吉林省地矿局受地矿部科技司委托于1989年年底,对长春地质学院和吉林省地矿局第六地质调查所共同完成的延边地区(槽区)花岗岩成因系列及其成矿作用进行了评审鉴定。该成果应用了当代花岗岩地质学的理论,采用综合研究手段和各种先进的测试方法,取得了该区花岗岩成因系列及其成矿作用方面的一系列重大进展。大大提高了该区花岗岩地质学、岩石矿物学、岩石化学和地球化学研究程度;全面总结了花岗岩类有关的矿产特征;提出了与华力西晚期花岗岩等有关的钨矿床     

吉林省图们市清晰洞金矿的发现及意义

清晰洞金矿是吉林省第五地质调查所2009年新发现的金矿产地,本文重点叙述了金矿的发现过程和工作方法,对以后工作具有借鉴意义。     

赵家骧

赵家骧,祖籍浙江绍兴,是我国著名地质学家.1937年毕业于北京大学地质系,同年考入中央地质调查所,1939年人西南经济研究所,1941年入四川地质调查所.1945年被派赴美深造,入美国联邦地质调查所,主要是参加非金属矿产的研究、开发与勘探.1946年回国后,在矿产测勘处工作时,曾经调查并写有《勘探江苏东海磷灰石矿纪要》一文,提出了“沉积变质成矿”的见解.1947年发表《差热分析法》,这是我国最早介绍这一新技术方法的文章.1947年他获得第     

《吉林省夹皮沟地区金矿地质—地球物理—地球化学模式及成矿预测》项目通过评审验收

《吉林省夹皮沟地区金矿地质—地球物理—地球化学模式及成矿预测》项目由吉林省地质矿产局区域地质矿产调查所承担完成。于1991年3月29日,由吉林省地矿局科技处主持,聘请长春地质学院,吉林省地质情报研究所,吉林省地质矿产局等单位在长春召开了该项目评审会。与会专家、教授对该项目给予了很高评价,一致指出,该项目选题合理,针对性强,工作中运用了太古宙中深变质岩区岩石—地质构造事件法,比较客观地真实的反映了夹皮沟地区花岗—绿岩地体形成和发展演化历史。在地质构造研究方面,以综合信息分析与地质调查相结合,进一步确立了以会全栈为中心的     

Unity of the national and the international in the socio-cultural development of the peoples of the USSR

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.     

Global repeating events in the history of the Earth and the motion of the Sun in the Galaxy

Chronological analyses of correlations between certain global repeating events (mass extinctions of marine organisms, meteorite impacts, and flashes in the frequency of geomagnetic reversals) during the Phanerozoic Eon and the motion of the solar system in the Galaxy are presented for five rotationally symmetrical models for the regular Galactic gravitational field. Thirteen of sixteen mass-extinction events can be described by a repetition interval of 183±3 million years. This is in agreement with the anomalistic period (interval between two subsequent passages of the Sun through the apocenter of its Galactic orbit) in the model of Allen and Martos. The positions of the minima and maxima in Gaussian functions approximating the frequency distribution for geomagnetic reversals also agree with the times of passage of the Sun through the apocenter and pericenter, respectively, of its Galactic orbit in this model. The maximum in the distribution of the deviations of the dates of mass extinctions from the nearest dates of impacts of large, crater-forming bodies is close to zero, providing evidence that many such events are correlated. As a rule, extinctions follow impact events. The impacts of large bodies have occurred most often when the solar system passes through the Galactic plane, while mass extinctions occur more often at some distance from the Galactic plane (about 40 pc). As a rule, intervals of increases in the frequency of geomagnetic reversals coincide with dates of impacts of large bodies. At the same time, these intervals do not show a clear correlation with the dates of mass extinctions. The intensity of mass extinctions, like the energy released by impacts, is consistently higher in periods when the Sun is moving from the apocenter toward the pericenter of its orbit, than when it is moving from the pericenter toward the apocenter. Thus, there is evidence for a variety of relationships between repeating global events in the Phanerozoic and the motion of the Sun in the Galaxy. Long-period variations in the frequency of geomagnetic reversals are correlated with the orbital motion of the Sun, and increases in the frequency of geomagnetic reversals are correlated with impacts. Mass extinctions are correlated with the impacts of large bodies, whose motions may have been perturbed by clouds of interstellar material concentrated toward the Galactic plane and by the shock front associated with the Perseus spiral arm, through which the solar system passes. The velocity of the Sun relative to the spiral pattern is estimated.     

Deviation of the major axis of the inertia ellipsoid of the Moon from the direction toward the Earth

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″.     

从榴辉岩与围岩的关系论苏鲁榴辉岩的形成与折返

位于华北和扬子两板块碰撞带中的苏鲁榴辉岩形成的温压条件不但是超高压，而且是高温。榴辉岩的PTt轨迹表明其为陆-陆磁撞俯冲带的产物。榴辉岩的区域性围岩花岗质片麻岩为新元古代同碰撞期花岗岩，榴辉岩及其他直接围岩皆呈包体存在于其中，并见新元古代花岗岩呈脉状侵入榴辉岩包体中。区域性围岩新元古代花岗岩的锆石中发现有柯石英、绿辉石等包裹体，表明新元古代花岗岩的组成物质也经受过超高压变质作用，且榴辉岩与围岩新元古代花岗岩的锆石U-Pb体系同位素年龄基本相同。但新元古代花岗岩所记录的变质作用和变形作用期次（或阶段）却少于榴辉岩。椐上述可得如下推断：超高压榴辉岩与新元古代花岗岩岩浆是同时在碰撞带底部（俯冲板块前部）形成的；榴辉岩的第一折返阶段是由新元古代花岗岩岩浆携带上升的，其第二折返阶段是和新元古代花岗岩一起由逆冲及区域性隆起而上升，遭受剥蚀。     

某高速公路下伏煤矿采空区稳定性分析

在论述某高速公路下伏砦脖煤矿采空区地质、采矿和工程地质特征的基础上, 进行了稳定性数值模拟分析, 定性与定量地分析与评价了该煤矿采空区的地表变形特征及稳定性。研究结果表明: 该煤矿采空区的变形尚未完成, 对拟建的高速公路将产生很大的危害, 必须采取相应的工程治理措施。      

摩擦桩基桩土间极限摩阻力取值问题探讨

通过对广珠东线高速公路横沥大桥的试桩及土体的工程地质条件分析,总结出影响摩擦桩基桩土间极限摩阻力取值的一般问题以及解决问题的方法和措施。     

Paleomagnetic implications on the evolution of the tethys belt from the atlantic ocean to the pamirs since the triassic

We first re-examined the apparent polar wander curves for stable Eurasia and Africa since the Triassic. These curves were then combined together with curves of North and South America according to the kinematics of the Atlantic ocean and a synthetic polar wander curve was given. Then, most of the paleomagnetic results from the Tethys mobile belt, from the Atlantic to the Pamirs, were analysed.Several groups of plates, microplates and blocks can be seen. First, relatively stable regions like Maghreb and Sicily, which have not moved much. Then we have a group formed by Iberia, Sardinia, Italy and, to a lesser extent, Corsica and the Western and Central Alps. For these blocks, movements are anticlockwise rotations chiefly driven by the anticlockwise rotation of Africa, but they are sometimes stronger.To the east, a major change takes place. The north of the Aegean Sea and the Ionian zone are clockwise rotated and these rotations are recent: Oligocene-Miocene for the first part, Pliocene to the present for the second part.A major problem arises in Turkey, Caucasus and Iran. Paleomagnetic results indicate a position far to the south of Eurasia, and, at the same time, geological evidence is in favour of a position close to Eurasia. We discuss these discrepancies.     

On the consistency of proposed models for the Pyrenees with the structure of the eastern parts of the belt

The structure of the eastern Pyrenees consists mainly of south-directed thrusts involving basement and cover rocks. An antiformal stack developed by the piling up of basement thrust sheets which outcrop in the Axial zone. These structures account for a thin-skinned thrust model rather than a vertical fault model in which the Axial zone would be essentially autochthonous, and the North-Pyrenean fault the axial plane of a fan thrust system. New data from the Eastern Pyrenees and the thin-skinned model suggest that(1) the structure east of the Pedraforca nappe is similar to that of the Central Pyrenees; (2) the cover rocks of the South-Pyrenean units and of the Axial zone-after restoration—built up a northwards-thickening prism consistent with the existence of a unique Pyrenean sedimentary basin during Mesozoic time; (3) the Axial zone is only a complex antiformal stack developed as a part of South-Pyrenean system related to the Paleogene thrusting-tectonics. The Axial zone palaeogeographic area had no special meaning during Mesozoic time.