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tectonic
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  构造
    Natural Gas Reservoir Formation Mechanism of Ordovician and Its Relation with Tectonic Evolution in Ordos Basin
    鄂尔多斯盆地奥陶系天然气成藏机理及其与构造演化关系
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    The Tectonic and Sedimentary Evolution and Its Relationship to Gas Accumulation of Lower Paleozoic in Ordos Basin
    鄂尔多斯盆地构造沉积演化与下古生界天然气聚集关系研究
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    Mesozoic Sedimentology, Basin Analysis and Tectonic Evolution in the North Margin of the Dabie Orogenic Belt, China
    大别造山带北缘中生代沉积学、盆地分析和构造演化
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    Tectonic Deformation Features and Space-time Evolution in Northeastern Margin of the Qinghai-Tibetan Plateau Since the Late Cenozoic Time
    青藏高原东北缘晚新生代以来的构造变形特征与时空演化
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    A Study on the Characteristics of Recent Tectonic Deformation and Earthquake Activity in North China
    华北地块近期构造变形和强震活动特征研究
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  大地构造
    Study on the Tectonic Framework of Qinghai
    青海省大地构造格架研究
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    ON SOME OF THE TECTONIC CHARACTERISTICS OF CHINA WITH SPECIAL DISCUSSION ON THE POLYCYCLIC DEVELOPMENT OF GEOSYNCLINAL FOLDBELTS
    对中国大地构造特点的一些认识并着重讨论地槽褶皱带的多旋回发展问题
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    THE VICISSITUDES OF LATITUDINAL TECTONIC ZONE OF CHINA AND ITS TECTONIC SIGNIFICANCE
    中国纬向构造带的古今变迁及其大地构造意义
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    ON THE TECTONIC EVOLUTION OF EAST ASIA IN LATE PRECAMBRIAN
    东亚晚前寒武纪大地构造演化
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    NEW RESEARCHES ON THE TECTONIC CHARACTERISTICS OF CHINA
    中国大地构造特征的新研究
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  构造的
    THE BASIC CHARACTERISTICS OF THE TECTONIC EVOLUTION OF THE CONTINENTAL LITHOSPHERE IN CHINA
    论中国大陆岩石圈构造的基本特征
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    REGIONAL TECTONIC EVOLUTION OF EAST KUNLUN
    东昆仑区域构造的发展演化
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    THE FUNCTIONAL CLASSIFICATION OF FAULTS IN CONTINENTAL EXTENSIONAL TECTONIC AREAS
    大陆拉伸构造区断裂构造的功能分类
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    CENOZOIC TECTONIC EVOLUTION IN TAIXI BASIN
    台西盆地新生代构造的演化
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    According to the balanced cross section and the research results of the regional structure,the tectonic evolution in the Kongquehe region can be divided into five periods: passive continental margin chasmic stage(Z-O1),extension-compression transition stage(O2-S),NE-NW tectonic development stage(D-P1),regrowth of Paleozoic era and near ES fold formation stage(J) and the whole area of lifting movement stage(K-Q).
    利用平衡剖面法,并结合区域构造研究成果将该区构造演化划为五个阶段:被动陆缘裂陷阶段(Z-O1)、拉张至挤压环境转变阶段(O2-S)、北东和北西向构造发育阶段(D-P1)、古生代构造的再生长及近东西向褶皱形成阶段(J)、大面积的整体升降运动阶段(K-Q)。
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    Global Plate Tectonic Motion from GPS Measurements
    GPS监测全球板块构造运动的研究
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    Research of Paleozoic Tectonic Process in Northeast Xinjiang
    新疆北东部古生代构造作用过程研究
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    A GIANTIC TECTONIC BELT RUNNING ACROSS EASTERN CHINA
    纵贯中国东部一条新的巨型构造带
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    THE BASIC CHARACTER OF THE RECENT TECTONIC MOVEMENTS IN JILIN PROVINCE
    吉林省新构造运动的基本特征
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    CHARACTERISTICS OF LACUSTRINE TURBIDITES AND THEIR TECTONIC SIGNIFICANCE
    湖泊相浊积岩的主要特征及其地质意义
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  tectonic
Studies in the past decade have proven the Shanita fauna to be an excellent marker of the northern peri-Gondwana tectonic blocks.
      
The thermal-rheological stratification structures of the lithosphere in the East Qinling orogenic belt present different features from each other within different tectonic units.
      
The North Qilian orogenic belt is an elongate tectonic unit that lies between the North China plate to the north and the Middle Qilian microplate to the south, and is formed by a collision of the two plates in the Caledonian.
      
The tectonic environment discrimination by trace element reveals that these igneous complexes formed in an island-arc setting.
      
Tectonic setting was stable during the Late Paleozoic, therefore there are obvious negative Ce anomalies.
      
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In recent years, the geotectonic problem of China engages the attentionof many Chinese and Soviet geologists, but different opinions are confessed by different authors. After studying the structural characters of the fundamentalfloor and its later geological development, theauthor of this paper agrees withthe statement of the Soviet geologist, B. M. Синицын. In 1952 he pointed outthat the Chinese platform in eastern China, may bs divided into: (1) theSine-Korean platform; and (2) the Southern-Chinese platform,...

In recent years, the geotectonic problem of China engages the attentionof many Chinese and Soviet geologists, but different opinions are confessed by different authors. After studying the structural characters of the fundamentalfloor and its later geological development, theauthor of this paper agrees withthe statement of the Soviet geologist, B. M. Синицын. In 1952 he pointed outthat the Chinese platform in eastern China, may bs divided into: (1) theSine-Korean platform; and (2) the Southern-Chinese platform, consolidatedas a result of the Luliang movement. This Chinese platform especially in its southern part shows a very peculiarphenomenon as it is called "Activization" of the platform. During Sinian andPaleozoic, its sediments belonged to the pronounced epi-continental type, duringthe mesozoic the south-eastern part of the Southern-Chinese platform wasneither a stable shelf nor a geosyncline, but an intermediate type between them.Its characters were really not geosynclinal, but sometimes showed geosynclinalaffinities, as for instances, the immense granitic intrusions, the eruptions oflavas, and the rather strongly folded geosynclinal structures. These imply thelimited mobility or the incomplete consolidation of the underground. Accor-dingly, referred to the structural type of this region, P. Misch called it"Sinotype". Furthermore, in the Southern-Chinese platform, two strong "Activizingunits" are recognized as follows: 1) The Hunan-Kwangsi activizing andsubsiding region; 2) The Cathaysian activizing oldland. The "Activization"of these regions lasted for a long geological time. It began in Sinian, throughCaledonian, Variscian, Indo-Sinian, Yenshanian and even Himalayan. BeforeMesozoic, the Caledonian was the most intensive and widely distributed one.But as pointed out by A. H. Мазарович, the Caledonian of the Southern-Chineseplatform was merely a fold-belt within the platform. According to its geotectonic history, its character of sedimentation, itsregional metamorphism, its igneous activity and its geotectonic systems, suchas "Kwangsi ∈ system", "North-Kwangtung ∈ system", "Meso and Neo-Cathaysiansystem", and the "Nanling eastwest tectonic zone", it is the author's opinionthat the "Imtermediate type (Sinotype)" of the Southern-Chinese platform wasdeveloped gradually through a long "Activizing process". This "Sinotype" is anintermediate type between the stable shelf and the geosynclinal region.

作者同意B.M.西尼村的意见,认为中国地台是中国东部的一个大的构造单位,它是在吕梁运动后造成的。中国地台由两个主要部分构成,它的北部称中朝地台,南部称华南地台。中国地台有一很重要的特征,就是一个“活化”的地台。华南地台的东南部“活化”尤其强烈而显著,在中生代的太平洋运动时,差不多具有类似地槽的特征。但是它的“活化”是有悠久历史的,即开始於震旦纪,所以加里东运动给与很大的影响,但加里东运动只是地台内部的褶皱。地台“活化”直到中生代太平洋运动才得到高度发展,产生巨大的火成活动以及“中国式”的构造型式。新生代时地台还有中等强度的运动和火成活动。自第四纪冰期之后,地台仍在较弱的升降运动中。华南地台无论从沉积岩相、区域变质及火成活动,或从山字型、华夏式及南岭东西褶皱的构造体系等构造型式发育史的研究,都可以看到它的“活化”过程,在这过程里发育了“过渡类型”的构造形态,这都是不同放地槽或地台的构造形态的。本文是作为学习心得性质的初步尝试,文中不成熟和谬误之处尚多,希望得到大家的指正。如果能在集体的讨论和研究之下将我国大地构造研究清楚的话,这是作者所衷心期望的。

Ⅰ. General SKETCH The Cenozoic basalt lavas are widely distributed along the coastal regionand its adjacent districts in eastern China. They form either widespread plateausor scattered mesa-like hills; and, in some places, the volcanic craters are stilladmirably preserved to-day. These basalt sheets were erupted extensively in lateTertiary and early Quaternary times. They belong to the multiple-vent basalts,but not the plateau basalt in the type of eruption. In this paper are given the results of a petrochemical...

Ⅰ. General SKETCH The Cenozoic basalt lavas are widely distributed along the coastal regionand its adjacent districts in eastern China. They form either widespread plateausor scattered mesa-like hills; and, in some places, the volcanic craters are stilladmirably preserved to-day. These basalt sheets were erupted extensively in lateTertiary and early Quaternary times. They belong to the multiple-vent basalts,but not the plateau basalt in the type of eruption. In this paper are given the results of a petrochemical study of the Ceno-zoic basalt in eastern China. Geological and petrographical studies of the basaltsare not described in detail. Judging from the chemical compositions, the mostoutstanding characteristic feature of the most basaltic rocks is the richness inalkalis, especially in K_2O, also the undersaturation in silica, and, therfore,the most of the basalts distinctly belong to the alkaline rock suite. Such chemicalcharacters are closely related to modal compositions. The general petrogra-phical characters of the basalt may be now as well described. In North Chinaand South Manchuria most basalts are trachy basalt and its allied types, andoccasional nepheline basalt. The constituent minerals of these basalt are cha-racterized by the presence of anorthoclase, potash-adesine, plagioclase, titanaugite,as well as by the abundance of olivine. In South China the main basalt is olivinebasalt, consisting of olivine, augite, and plagioclase as usual. At some placesthe basalt may be slightly silica saturated that the occasional presence of hyper-thene and quartz (xenocryst) is noteworthy. In North Manchuria the dominant basalt is leucite basalt, containing leucite and olivine as phenocryst and groundmass constituent. Xenocryst of quartz and feldspar grains are sometimes present.In Taiwan Province, basalt of Kuanyinshan volcano is of the tholeiite type,but, in some other districts, the alkaline basalt with feldspathoidal constituentalso occurs. In view of the above-mentioned facts, the petrographical difference seemsto be matched by the differences of the major tectonic forms of China. Thesefacts may be tabulated below: Geographical region Tectonic forms Basalt type 1. North Manchuria Granitized region in Varisclde Leucite basalt 2. North China & South Precambrian Sino-Korean Trachybasalt Manchuria massive 3. South China Huanan platform in Yenshanide Olivine basalt 4. Taiwan Himalayide Tholeiite basalt Ⅱ. Regional INVESTIGATION In Table 1 the chemical analyses of the Cenozoic volcanic rocks in easternChina published up to 1951 were collected, of which 74 analyses are basalticrocks. The available analyses of every basalt sheet are taken an average to re-present the regional composition of the basaltic rocks. The localities of the basaltsheets where the analyzed chemical data are referable are shown in Figure 1.In all, 21 localities of basalt are investigated. The average chemical compositionsof each basalt locality, together with the normative minerals, Niggli's valuesand Zavarickij's numbers are given in Tables 2 A and 2 B respectively (localnos. in Table 2 correspond to the numerous in circle in Figure 1). For theconvenience of comparison, the average chemical composition of some standardbasalts (after S. R. Nockolds, 1954), some alkaline basalt in New Zealand (afterW. N. Benson, 1944) and Uganda (after A. Holmes, 1937), and the world's ba-salts, together with the normative minerals, Niggli's values and Zavarickij'snumbers of our calculation, are selected and given in Tables 3A, 3B, 7A, 7Brespectively. As mentioned above, the chemical composition of eastern China basalt ischaracterized by the high content of alkalies, and especially the K_2O. This cha-racter is definitely revealed by the normative feldspar, which is given in Table2 A and graphically shown in Figure 2. From this graphical representation,it is recognized that the normative feldspar becomes increasingly enriched ormolecular from South China to North Manchuria. Although the projected points appear to be scattered, a trend of clustering of the normative feldspars in accor-dance with its geographical distribution is apparent upon close inspection. Inthe normative pyroxene diagram, Figure 3, it is shown that most basalts of easternChina are rich in Wo molecular, falling near the Di-Hd line; On the otherhand, those of Kuanyinshan basalts of Taiwan Province are poor in Wo andcluster in the central part of the Di-Hd-Fs-En field. Therefore, that the easternChina basalt, excluding that of Kuanyinshan, belong to the alkaline rock suiteis justified. The comparison diagrams of qz, al-alk, C-(al-alk) and K-mg ofNiggli's values, based on the data given in Tables 2 B, 3 B, and 7 B, are gra-phically shown in Figs. 4, 5, 6 and 7 respectively. As will be seen from thesefigures, in general, the qz and al-alk of Niggli's value are lower, but C-(al-alk) and K-mg are higher than those of some common basalts. Fig. 8 isZavorickij's petrochemical vector diagram, from which the petrochemical cha-racters of high alkaline property in eastern China basalts are clearly justified. Ⅲ. Serial COMPARISON For ascertaining and understanding the general chemical characters, theCenozoic eastern China basalt and its differentiated associations are divided,based on the SiO_2 content, into 5 chemical types, the average composition ofwhich is given in Table 5A. As the chemical composition of Kuanyinshanvolcanic rocks in Taiwan Province shows a distinct calc-alkaline affinity, it is,therefore, dealt with the same procedure as well. The average chemical compo-sition of the volcanic rocks is given in Table 5 B. Since the Cenozoic basalt ineastern China covers the region adjacent to the Circum-Japan Sea and the Ja-panese Archipelagoes which are well known by the occurrence of alkaline andcalc-alkaline rock suite respectively. The serial variation in the chemical com-position of eastern China volcanic rocks is examinated in comparing them withthose of the Circum-Japan Sea and the Japanese volcanic rocks. The data usedfor the Circum-Japan Sea and Japanese rocks, which are given in Tables 6 A and6 B, are based on Tomita's and Yamada's calculated results respectively. Zavaric-kij's number of the same rocks, based on Zavarickij's data, is given in Table6 C. Following various petrochemical methods, some graphic diagrams are cons-tructed in order to express the chemical characters of the rock series of easternChina more definitely. The difference in chemical composition as comparedwith the Circum-Japan Sea alkaline rock suite is shown in the normal varia-tion diagram Figure 9. Other petrochemical indices (proposed by Peacock, Hol- mes and Tomita respectively) obtained are summarized below: Ⅰ Ⅱ Ⅲ Ⅳ alkali-lime index (Fig. 10) 65.5 59.0 63.0 52.0 alkali-alumina index (Fig. 11) -- -- 67.8 63.3 Ol-Q index (Fig. 12) 20.0 43.0 72.5 76.5 Ne-Hy index (Fig. 13) -- -- 55.0 59.9 Di-C index (Fig. 14) 46.5 46.5 -- -- Ⅰ. Japanese volcanic rocks; Ⅱ. Taiwan volcanic rocks; Ⅲ. Circum-Japan Sea alkaline suite; Ⅳ. eastern China volcanic rocks.From these graphical solutions in Figs. 10-14, it may be justified that thevolcanic rocks in eastern Asia have increasingly enriched the alkali contentfrom the Japanese Archipelagoes to the mainland of China. Figure 15 is avariation diagram of the normative feldspar of the eastern China series, incomparison with that of the Circum-Japan Sea region, the Japanese Archipela-goes and New Zealand. As will be seen from the diagram, the variation of thenormative feldspar of eastern China rock series is quite discriminative. Notonly is it richer in or molecular, but the positions of point N and O (corres-pond to the respective Ol-Q and Ne-Hy indices as shown in Figs. 12 and 13)of the eastern China series are also in a later course than the others. Figure 16is a paragenetic diagram of the normative plagioclase and pyroxlene of theeastern China series. In the variation diagram of the normative pyroxene, Fig.17, the distinct difference in the course of variation between the alkaline andcalc-alkaline series is clearly revealed. In this connection, the directon of varia-tion in the normative pyroxene of the alkaline series differs from that of thecalc-alkaline series. It is also notable that the range of variation in the easternChina series is smaller, due to the presence of higher Wo molecular in bothbasic and acidic types, as compared with that of the Circum-Japan Sea series.Figure 18 is Zavarickij's petrochemical vector diagram of the eastern Chinaseries compared with that of Circum-Japan Sea and Japanese series. It may be acomplemental diagram of the serial comparison diagram of eastern Asia volcanicrock series, prepared by Zavarickij (cf. A. N. Zavarickij's Introduction to Petro-chemistry of Igneous Rocks, 1950, Fig. 61, p. 205, in Russian). The distinctdifference of these rock series may be clearly observed in the graphical solution.In Table 7 A is given the average chemical composition of eastern China basalt,together with the composition of basaltic rocks of the world (including olvinebasalt and Toleiite, Ocean basalt and Continent basalt) for comparison. Theeastern China average is very similar to the average composition of the olivine- basalt of the Circum-Japan Sea region (based on Tomita, 1935, and recalculatedby the writer), while it differed more or less from that of any of the world'sbasalts by the high content of alkali and especially K_20. This character isdefinitely revealed by the normative feldspar and pyroxene, which are graphi-cally shown in Figs. 19 and 21 respectively. Figure 20 is Zavarickij's petroche-mical diagram of the world's basalt. As shown in these diagrams, it suggests atransitional relation rather than a sharp cleft in the petrochemical charactersof the world's basalts. There are no distinct types of basalt magma but rathera continuous series from silica saturated (tholeiitic) to silica-undersaturated(olivine-basalt) rock, although the chemical distinction may be too subtle to beread directly from chemical analyses. Ⅳ. ORIGINAL Basalt Magma The original magma of eastern China basalt belongs to the olivine basaltmagma type. In this discussion it is assumed that the primary olivine basaltmagma is melted from a crust of peridotitic crystalline rock in the upper partof the sima layer. Olivine basalt magma may be modified by the gain of alimited amount of silica and some alkalies to produce a derived melt, whichappears to coincide with the thole

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The phase velocities of Rayleigh waves in China were obtained by using the seis- mograms from twelve stations in China.Two earthquakes from New Britain Islands were chosen.The amplitudes of Rayleigh Waves with the period of about 35 seconds are considerably smaller than their following phases with shorter periods.This particular feature of the seismograms can be traced from most of the stations.It makes the cor- relation more feasible.Detailed correlations are obtained by analyzing the variation of periods with...

The phase velocities of Rayleigh waves in China were obtained by using the seis- mograms from twelve stations in China.Two earthquakes from New Britain Islands were chosen.The amplitudes of Rayleigh Waves with the period of about 35 seconds are considerably smaller than their following phases with shorter periods.This particular feature of the seismograms can be traced from most of the stations.It makes the cor- relation more feasible.Detailed correlations are obtained by analyzing the variation of periods with distances and also the arrival times of each crest of Rayleigh waves in the seismograms.The phase velocities of separate regions as computed from two different earthquakes are in good agreement.The results show that in calculating the phase velo- cities with tripartite method,the corrections due to different oceanic paths can not be neglected if the angular distances between them were great.Because the parameters of the earth crust in China are not well-known,we have to compare these calculated phase velocities of Rayleigh waves in China with the revised phase velocity nomograms of Rayleigh waves by Press,based on the materials obtained in Africa.The crust thick- nesses in separate regions are thus computed,the results being merely tentative.How- ever,unless more geophysical data were available,these data as given by this method still show a rather close correlation with the principal tectonic features in China.In the region of Tibetan Plateau,the phase velocities are very low,and the calculated thick- ness of the earth crust there is 74 kms;whereas in the region of southeastern coast,the phase velocities are high,and the calculated thickness is only 20 kms.

本文利用新不列颠岛两个地震在十二个基本台站所记录到的瑞利波,计算了我国不同地区的相速度.着重讨论鉴别和对比不同台站记录中同一震相的方法.在大部分台站的记录中,见到有周期约为35秒的相位,和后面的位相比较,它的周期较大,振幅较小.波形的对比对初步鉴别震相有很大的帮助.详细的震相对比是根据周期随距离变化的规律和各震相到时的规律.两个地震所得的相速度很符合.计算的结果表明:利用三台计算相速度时,如果射线的路程差别较大,海洋路程的校正是不能忽略的.因为有关我国地壳构造的资料还很少,我们所得的瑞利波相速度只能与普瑞司修正后非洲大陆的相速度理论相比较,由此得到我国不同地区的地壳厚度.这样所得的厚度,虽然不能视为最后的结果,但是它们仍然表现与主要地质单元之间有密切的联系.

 
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